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  • Acoustic and mechanical properties of recycled polyvinyl chloride/ground tyre rubber composites

     Colom Fajula, Xavier; Cañavate Avila, Francisco Javier; Carrillo Navarrete, Fernando; Lis Arias, Manuel Jose
    Journal of composite materials
    Date of publication: 2013-04-08
    Journal article

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    In order to provide another way of reducing the stock of used tyres and polyvinyl chloride waste, a new material is developed and studied. Formulation includes a matrix constituted by a compound of recycled polyvinyl chloride with plasticized polyvinyl chloride and a reinforcement of ground tyre rubber. Acoustic and mechanical properties of different compositions of polyvinyl chloride/ground tyre rubber were tested in order to determine their suitability for applications fulfilling industry requirements. Sound absorption has been analyzed, showing interesting results at frequencies higher than 2500¿Hz. The obtained values are found to be depending on the thickness of the sample, the content of the ground tyre rubber and the existence of gaps, pores and voids either between layers or in the interphase between the matrix and reinforcement. From the study of the mechanical properties, we may observe that the ground tyre rubber act as filler, improving stiffness of polyvinyl chloride/ground tyre rubber composites with an increase of Young Modulus. The tensile strength, elongation at break and toughness decrease slowly. The decrease of these mechanical properties is observed to be lower than in the case of composites made by using high-density polyethylene as a matrix.

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    Development of novel catalytically active polymer-metal-nanocomposites based on activated foams and textile fibers  Open access

     Domènech Garcia, Berta; Ziegler, Kharla; Carrillo Navarrete, Fernando; Muñoz Tapia, Maria; Muraviev, Dmitri N.; Macanás de Benito, Jorge
    Nanoscale research letters
    Date of publication: 2013
    Journal article

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    In this paper, we report the intermatrix synthesis of Ag nanoparticles in different polymeric matrices such as polyurethane foams and polyacrylonitrile or polyamide fibers. To apply this technique, the polymer must bear functional groups able to bind and retain the nanoparticle ion precursors while ions should diffuse through the matrix. Taking into account the nature of some of the chosen matrices, it was essential to try to activate the support material to obtain an acceptable value of ion exchange capacity. To evaluate the catalytic activity of the developed nanocomposites, a model catalytic reaction was carried out in batch experiments: the reduction of pnitrophenol by sodium borohydride

  • Thermosensitive fibres of lyocell/poly(N-isopropylacrylamide): multiparametric analysis for studying the graft copolymerization

     Erencia Millan, Maria Salud; López Mesas, Montserrat; Carrillo Navarrete, Fernando
    Polymer international
    Date of publication: 2013-12-17
    Journal article

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    The thermosensitive properties of the hydrogel poly(N-isopropylacrylamide) (pNIPAAm) together with the good mechanical properties of lyocell fibres make a combination of the two to be thought of as a smart textile. In the present study the optimal values of various parameters that control the grafting process of pNIPAAm onto lyocell fibres were determined considering the influence of the interaction between them. The copolymerization of pNIPAAm hydrogel onto lyocell fibres was performed in aqueous acidic medium using cerium(IV) as initiator. An experimental design was planned in order to study the effect of the interactions between some variables that affect the kinetics of the graft copolymerization: the cerium(IV) initiator concentration, the N-isopropylacrylamide (NIPAAm) monomer concentration and the liquor fibre-to-bath ratio. The results show that the interaction between the concentrations of NIPAAm and the initiator significantly affects the degree of grafting (DG), the optimum values being 1250 and 12.25 mmol L-1, respectively. In contrast, the liquor ratio parameter shows no significant interaction with the other two variables studied, meaning that it acts independently but showing a proportional relationship with respect to the DG obtained. In addition, the presence of pNIPAAm in the copolymer obtained was confirmed by Fourier transform infrared spectral analysis. Moreover, the water sorption capacity, depending on the temperature, of the lyocell/pNIPAAm copolymer was studied, with an increase being observed when the DG is higher than 60% and also increasingwith the temperature

    The thermosensitive properties of the hydrogel poly(N-isopropylacrylamide) (pNIPAAm) together with the good mechanical properties of lyocell fibres make a combination of the two to be thought of as a smart textile. In the present study the optimal values of various parameters that control the grafting process of pNIPAAm onto lyocell fibres were determined considering the influence of the interaction between them. The copolymerization of pNIPAAm hydrogel onto lyocell fibres was performed in aqueous acidic medium using cerium(IV) as initiator. An experimental design was planned in order to study the effect of the interactions between some variables that affect the kinetics of the graft copolymerization: the cerium(IV) initiator concentration, the N-isopropylacrylamide (NIPAAm) monomer concentration and the liquor fibre-to-bath ratio. The results show that the interaction between the concentrations of NIPAAm and the initiator significantly affects the degree of grafting (DG), the optimum values being 1250 and 12.25 mmol L−1, respectively. In contrast, the liquor ratio parameter shows no significant interaction with the other two variables studied, meaning that it acts independently but showing a proportional relationship with respect to the DG obtained. In addition, the presence of pNIPAAm in the copolymer obtained was confirmed by Fourier transform infrared spectral analysis. Moreover, the water sorption capacity, depending on the temperature, of the lyocell/pNIPAAm copolymer was studied, with an increase being observed when the DG is higher than 60% and also increasing with the temperature

  • Biocomposites using waste whole chicken feathers and thermoplastic matrices

     Carrillo Navarrete, Fernando; Rahhali, Ahmed; Cañavate Avila, Francisco Javier; Colom Fajula, Xavier
    Journal of Reinforced Plastics & Composites
    Date of publication: 2013-10
    Journal article

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    This study deals with the preparation and characterization of thermoplastic composites using polypropylene, high-density polyethylene and polylactic acid matrices and including whole chicken feathers as reinforcement. The behaviour of the composites was determined in terms of physical and mechanical properties, which were related to the fibre¿matrix compatibility analysed by Fourier transform infrared spectroscopy and scanning electron microscopy. The results showed that the addition of chicken feathers into the thermoplastic matrices results in a slight increase in the stiffness when small amounts of chicken feathers (5¿10% vol/vol) were incorporated into the composites. Tensile strength at maximum load, elongation at break and toughness properties decreased when the chicken feather concentration was increased. Results for chicken feather¿polypropylene composites were analogous to chicken feather¿high-density polyethylene and chicken feather¿polylactic acid composites. The Fourier transform infrared spectroscopic study and the scanning electron micrographs suggest that the insufficient compatibility of chicken feather and polymer matrices is the main reason for the decrease in tensile properties

  • Chicken feathers based biocomposites: a new sustainable product?

     Molins Duran, Gemma; Alvarez Del Castillo, M. Dolores; Garrido Soriano, Nuria; Macanás de Benito, Jorge; Carrillo Navarrete, Fernando
    LCA Conference
    Presentation's date: 2013-11-05
    Presentation of work at congresses

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    Plastic composites are made of polymers and different reinforcements that originally were synthetic and non-biodegradable. Since 1990¿s, many biodegradable composites, formed by a biodegradable matrix and natural fibers, have been proposed. In spite of the advantages of biocomposites, it is important to ponder the technical drawbacks of these natural fibers, mainly from a vegetable origin, and their environmental impacts (EIs). Vegetable fibers imply a land use that can compete with food production. Chicken feathers (CFs), made of keratin fibers, are a potential alternative as they are a waste material, produced in large quantities (800,000 ton/year in EU-27), do not compete with human food production and have been scarcely used up to now. Taking on board these premises, a biocomposite made of PLA and CFs was fabricated at lab-scale as new material. However, before using CFs as reinforcement, sanitizing pretreatments have been envisaged before, due to their quick decay. The EIs of these treatments were experimentally quantified and a cradle-to-gate Life Cycle Assessment (LCA) was performed to evaluate altogether the impacts of manufacturing a technical panel with different content of CFs (up to 35% v/v). As main results, the avoided burdens of the CF waste treatment and the energy consumption for the drying step must be optimized to achieve lower EIs for the preparation of CFs/PLA composites

  • Composites from keratin biofibers. Study of compatibility using polyolephinic matrices

     Carrillo Navarrete, Fernando; Rahalli, Ahmed; Cañavate Avila, Francisco Javier; Colom Fajula, Xavier
    European Conference on Composite Materials
    Presentation's date: 2012-06-25
    Presentation of work at congresses

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    The study deals with the analysis and characterization of chicken feathers (CFs) based thermoplastic composites. The performance of the composite has been characterized in terms of mechanical properties which have been related to the fibre-matrix compatibility of the composite components analyzed by FTIR and SEM. The results have shown that the addition of short CFs as a filler to the PP thermoplastic matrix did not significantly improve the mechanical properties. A slightly increase of the stiffness has been observed when using small quantities of CFs (5-10% v/v) that provides to the composites a more brittle behaviour. Analogous behaviour has been observed for HDPE/CFs composites. FTIR spectroscopy and SEM micrographs analyses show limited compatibility between the composite components (CFs and polyolephinic matrices)

  • Use of chicken feathers waste for the fabrication of composite materials

     Carrillo Navarrete, Fernando; Macanás de Benito, Jorge; Colom Fajula, Xavier; Cañavate Avila, Francisco Javier; Molins Duran, Gemma; Alvarez Del Castillo, M. Dolores; Garrido Soriano, Nuria
    European Conference on Composite Materials
    Presentation's date: 2012-06-26
    Presentation of work at congresses

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  • Chicken feathers based composites: a life cycle assessment

     Molins Duran, Gemma; Alvarez Del Castillo, M. Dolores; Garrido Soriano, Nuria; Macanás de Benito, Jorge; Carrillo Navarrete, Fernando
    European Conference on Composite Materials
    Presentation's date: 2012-06-25
    Presentation of work at congresses

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  • Chicken feathers based composites: a life cycle assessment

     Molins Duran, Gemma; Alvarez Del Castillo, M. Dolores; Garrido Soriano, Nuria; Macanás de Benito, Jorge; Carrillo Navarrete, Fernando
    European Conference on Composite Materials
    Presentation's date: 2012-06-25
    Presentation of work at congresses

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  • Colour fastness

     Valldeperas Morell, Jose; Carrillo Navarrete, Fernando
    Date of publication: 2012
    Book chapter

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  • Modelling drug delivery mechanisms for microencapsulated substances applied on textile substracts  Open access

     Carreras Parera, Nuria
    Defense's date: 2012-07-03
    Department of Textile and Paper Engineering, Universitat Politècnica de Catalunya
    Theses

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    Mathematical drug release modelling of biodegradable polymeric systems by microencapsulation technology in textiles has not progressed much yet, because it is generally too complex. The release of a therapeutic agent from a formulation applied to the skin surface and its transport to the systemic circulation has a multistep process. The transdermal drug released is a feasible administration route for powerful, low-molecular weight therapeutic agents, which has to be accurate in their control of drug distribution. Moreover, many drugs are difficult to handle because they must be delivered slowly over a prolonged period to have a beneficial effect. In the present work, several examples of practical applications of mathematical models, developed through experimental drug release data, are given. For those involved in the design and development of biodegradable drug delivery systems, it will be useful to choose the generic mathematical model for several specific drug release problems. This transport model is based on the appropriate solution to Fick's second law of diffusion and can be used to explain drug release kinetics into this complex biological membrane (skin). Microspheres containing active principles were prepared using a solvent evaporation procedure with poly(vinyl alcohol) as surfactant in the external aqueous phase. Several biodegradable microspheres of biocompatible polymers, taken as delivery systems for active agent, have been studied. Polymers were PLGA (Poly(lactide-co-glycolide)) and PCL (poly(e-caprolactone)). The active compounds chosen were cosmetics and drugs, such as gallic acid, caffeine and ibuprofen. The microspheres obtained were characterized by the measure of encapsulation efficiency. The surface morphology and chemical structure of the micro particles were investigated using scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR). Nanosizer was used for particle size distribution. The application of the microspheres in the fabrics was carried out using Pad-Dry technique, since it is a simple and efficient technology and its working conditions are harmless to the system. The drug release system was analyzed, through samples of the treated fibre (cotton, polyamide, acrylic and polyester) in order to study the drug delivery behaviour in different media, deionized water and physiological saline (T=37ºC). The skin penetration profile by in vitro technique for different active principles was determined using pigskin. The release experiments are performed resorting to the Franz Diffusion cells apparatus (Lara-Spiral, Courtenon, France) consisting of two thermostatic chambers, the upper donor and the lower receptor chamber, divided by a skin biopsy. The main objective of this study is to create smart textiles which allow a controlled drug release for any active compound/substance. Such objective will allow the control of the textiles drug release in such a way that the active compound is released in the right quantity, at the right time and at the right place. The present study has shown that the main objective has been successfully achieved. According to that, microencapsulation applied on fabrics can be considered as a good controlled release system. As a result, the project reached to a general kinetic model using smart textiles as a mass transport system through the skin.

  • Aplicació de Tècniques Electroquímiques i Fotoelectroquímiques per la Degradació de Compostos Poc Biodegradables en Efluents Industrials Tèxtils  Open access

     Sala Gastón, Mireia
    Defense's date: 2012-07-19
    Department of Textile and Paper Engineering, Universitat Politècnica de Catalunya
    Theses

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    Industrial effluents and their further reuse have shown an increasing interest. The current PhD Thesis is based on obtaining a new system for the treatment of textile effluents. The aim of this study is to remove colour and to degrade the hydrolysed reactive dyes as well as to achieve an effluent able to be reused in a new dyeing process. A total of 10 reactive dyes with different constitution are studied: chromophore group (azo and phtalocyanine), reactive group (chlorotriazine and vinilsulphone) and number of reactive groups (mono, bi and trireactive). Their behaviour respect to the decolouration and degradation is evaluated with several combinations of electrochemistry (EC) and ultraviolet irradiation (UV): EC alone, EC treatment with simultaneous UV (UVEC) and finally EC treatment with further UV (EC+UV). The electrochemical and photoelectrochemical treatment have demonstrated to be an efficient method in all the studied cases, achieving decolourations higher than 90%. All the studied dyes have similar behaviour except for the phtalocyanine which has lower kinetic decolourations rates than the azo group dyes. According to the different treatments studied, the optimised method is the one which starts with the EC treatment until 80% decolouration, followed by the UV irradiation in order to degrade the organohalogenated compounds generated during the electrolysis, which concentration is lower than 1ppm in all cases. In addition, different intensities are also studied (2A, 5A and 10A). The treatment performed at 10A is the most efficient due to the high rate of oxidants generation which enhances the dyes degradation. Different combinations of alkalis and electrolytes (NaOH with Na2SO4, and Na2CO3 with NaCl) are evaluated. In all the studied cases, high decolouration rates are obtained and the reuse is feasible when the residual alkali is removed before starting the new dyeing. Also, two kinds of anodes are studied (Ti/Pt and Ti/SnO2-Sb-Pt). In the presence of chloride, the first ones are the most efficient in effluents decolouration, showing kinetic rates around 4.5 times higher than the obtained with the second ones. However, in despite of a certain instability of Ti/SnO2-Sb-Pt anodes, they generate 2 to 7 times lower amounts of organic volatile compounds than the Ti/Pt anodes. On the other hand, different cell designs are used (¿Simple Batch Cell¿, ¿Recirculation Batch Cell¿ and the semi-industrial design). The two first ones, which only difference is the stirring mode, produce similar effluents decolouration. In addition, the results obtained with the semi-industrial pilot are in accordance with the laboratory designs. As a final part of the Thesis, different industrial baths which contain reactive dyes are treated. By one hand, the exhausted dyeing effluents and by the other hand the first washing effluents which contain surfactants. The main goal is to know the influence of the surfactant in the effluents decolouration.¿¿ The presence of the surfactant does not avoid the dyes degradation, although its decolouration kinetic rates decreased due to the higher degradable character of the surfactant.

    Actualment, el consum d’aigua destinat a l’ús industrial és molt elevat. Tenint en compte l’escassetat de l’aigua i la seva contaminació, augmenta cada cop més l’interès en desenvolupar nous mètodes destinats al tractament d’efluents industrials que permetin la seva reutilització. La present Tesi Doctoral està basada en l’obtenció d’un nou sistema de tractament d’efluents tèxtils que permet decolorar i degradar els colorants reactius hidrolitzats, a més d’aconseguir un efluent tractat capaç de ser reutilitzat en un nou procés de tintura. S’han estudiat un total de 10 colorants reactius amb diferent constitució, tant respecte als grups cromòfors (azo i ftalocianina), com al tipus de grup reactiu (clorotriazina i vinilsulfona) o al nombre de grups reactius (mono, bi i trifuncionals). S’ha avaluat el comportament, en front la decoloració i la degradació, d’aquest tipus de colorants amb varies combinacions d’electroquímica (EC) i radiació ultraviolada (UV): tractament EC únicament, tractament EC simultani al UV (UVEC), i finalment tractament EC amb posterior radiació UV (EC+UV). L’aplicació dels tractaments electroquímic i fotoelectroquímic ha demostrat ser eficient en tots els casos, obtenint decoloracions superiors al 90%. Tots els colorants es comporten de manera similar, excepte els que contenen el grup cromòfor ftalocianina que mostra cinètiques de decoloració inferiors a les del grup cromòfor azo. Dels diferents tractaments assajats, el mètode òptim és el que s’inicia amb el tractament EC fins assolir un 80% de decoloració i a partir d’aquest punt, s’aplica la radiació UV per tal d’eliminar els compostos organohalogenats generats durant el tractament electroquímic en concentracions inferiors a 1ppm. També s’ha estudiat la influencia de la intensitat de treball (2A, 5A i 10A). La intensitat de 10A esdevé la més eficient, ja que genera més compostos oxidants que afavoreixen la degradació dels colorants. S’ha avaluat l’efecte de diferents combinacions d‘àlcali i d’electròlit (NaOH amb Na2SO4, i Na2CO3 amb NaCl). En tots els casos s’han obtingut elevades decoloracions i la reutilització és factible sempre i quan s’elimini tot l’àlcali residual abans de procedir a la nova tintura amb l’efluent tractat. A més, s’han estudiat dos tipus d’ànodes (Ti/Pt i Ti/SnO2-Sb-Pt). En presència de clorurs, els primers són els més eficients en la decoloració dels efluents, donant constants cinètiques de l’ordre de 4.5 vegades superiors. Els segons, encara que pateixen una certa inestabilitat, són els que generen menors quantitats de compostos orgànics volàtils, disminuint la seva concentració entre 2-7 vegades. D’altra banda, s’han emprat diferents dissenys de cel·les electroquímiques (“Simple Batch Cell”, “Recirculation Batch Cell” i la cel·la de disseny semi-industrial). Les dos primeres, que es diferencien en el sistema d’agitació, mostren decoloracions similars. A més, amb la cel·la de disseny semi-industrial s’obtenen resultats concordants amb els dissenys de laboratori.

    Actualmente, el consumo de agua destinado al uso industrial es muy elevado. Teniendo en cuenta la escasez del agua y su contaminación, está aumentando cada vez más el interés por desarrollar nuevos métodos destinados al tratamiento de efluentes industriales que permitan a la vez la reutilización del agua. La presente Tesis Doctoral se basa en la obtención de un nuevo sistema de tratamiento de efluentes textiles que permite decolorar y degradar los colorantes reactivos hidrolizados, además de conseguir un efluente capaz de ser reutilizado en un nuevo proceso de tintura. Se han estudiado un total de 10 colorantes reactivos de diferente constitución, tanto en lo que respecta a los grupos cromóforos (azo y ftalocianina), como al tipo de grupo reactivo (clorotriazina y vinilsulfona) o al número de grupos reactivos (mono, bi y trifuncionales). Se ha evaluado el comportamiento de este tipo de colorantes respecto a la decoloración y la degradación mediante diferentes combinaciones de electroquímica (EC) y radiación ultravioleta (UV): tratamiento EC únicamente, tratamiento EC simultáneo al UV (UVEC) y finalmente, tratamiento EC con posterior radiación UV (EC+UV). La aplicación del tratamiento electroquímico y fotoelectroquímico ha demostrado ser eficiente en todos los casos, obteniéndose decoloraciones superiores al 90%. Todos los colorantes se comportan de manera similar, a excepción de los que contienen el grupo cromóforo ftalocianina cuyas constantes cinéticas de decoloración son inferiores a las del grupo cromóforo azo. Respecto a los diferentes tratamientos ensayados, el método óptimo es el que se inicia con el tratamiento EC hasta llegar al 80% de decoloración, punto a partir del cual se aplica la radiación UV a fin de eliminar los compuestos organoclorados generados durante el tratamiento electroquímico en concentraciones inferiores a 1ppm. También se ha estudiado la influencia de la intensidad de trabajo (2A, 5A y 10A). La intensidad de 10A es la más eficiente, ya que se generan proporcionalmente más compuestos oxidantes que favorecen la degradación de los colorantes. Se ha evaluado el efecto de diferentes combinaciones de álcali y electrolito (NaOH con Na2SO4 y Na2CO3 con NaCl). En todos los casos se han obtenido elevadas decoloraciones y la reutilización es factible siempre que se elimine todo el álcali residual antes de proceder a una nueva tintura con el efluente tratado. Además, se han estudiado dos tipos de ánodos (Ti/Pt y Ti/SnO2-Sb- Pt). En presencia de cloruros, los primeros son los más eficientes respeto a la decoloración de los efluentes, dando constantes cinéticas del orden de 4.5 veces superiores. Los segundos, aunque sufren una cierta inestabilidad, son los que generan menores cantidades de compuestos orgánicos volátiles, disminuyendo su concentración entre 2-7 veces. Por otra parte, se han utilizado distintos diseños de celdas electroquímicas (“Simple Batch Cell”, “Recirculation Batch Cell” y la celda de diseño semi-industrial). Las dos primeras, que se diferencian en el modo de agitación, muestran decoloraciones similares. Además, con la celda semi-industrial se obtienen resultados concordantes con los obtenidos mediante los diseños de laboratorio.

  • Premi Fundació Mina. Aigües de Terrassa

     Casadesús, Marta; Carrillo Navarrete, Fernando; López Mesas, Montserrat; Palet Ballús, Cristina
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  • Premi Fundació Mina. Aigües de Terrassa

     Ramos Pastor, Sílvia; Carrillo Navarrete, Fernando; López Mesas, Montserrat
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  • TNT2012 Poster Awards. Prizes to the best poster presented by Ph.D. Students

     Domènech Garcia, Berta; Ziegler, Kharla; Macanás de Benito, Jorge; Carrillo Navarrete, Fernando; Muñoz Tapia, Maria; Muraviev, Dmitri N.
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  • Determinar la causa de la rotura del tejido

     Carrillo Navarrete, Fernando; Cayuela Marin, Diana; Gutierrez Bouzan, Maria Carmen
    Date: 2012-06-04
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  • Análisis cualitativo del tejido de la chaqueta negra

     Carrillo Navarrete, Fernando; Cayuela Marin, Diana
    Date: 2012-03-02
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  • Solidez de las tinturas al agua de mar

     Carrillo Navarrete, Fernando
    Date: 2012-03-09
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  • Grado de blanco expresado en berger

     Carrillo Navarrete, Fernando
    Date: 2012-06-22
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  • Grado de blanco tanto base, como óptico. Resistencia a la tracción

     Cayuela Marin, Diana; Tornero Garcia, Jose Antonio; Carrillo Navarrete, Fernando; Gutierrez Bouzan, Maria Carmen
    Date: 2012-02-17
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  • Factor de protección ultravioleta de cuatro tejidos

     Carrillo Navarrete, Fernando
    Date: 2012-02-17
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  • FeatherTech: development of an innovative technology for the valorisation of feather waste into a new resource material

     Carrillo Navarrete, Fernando; Tornero Garcia, Jose Antonio; Macanás de Benito, Jorge; Domenech Trujillo, Maria Carmen
    Date: 2012-10-16
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  • Realitzar un estudi d¿envelliment en càmera climàtica

     Carrillo Navarrete, Fernando; Cayuela Marin, Diana
    Date: 2012-10-23
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  • Grado de blanco expresado en Berger

     Carrillo Navarrete, Fernando
    Date: 2012-10-24
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  • Cálculo factor de protección ultravioleta (U.P.F)

     Carrillo Navarrete, Fernando
    Date: 2012-01-31
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  • Causa de la rotura del tejido

     Carrillo Navarrete, Fernando; Cayuela Marin, Diana
    Date: 2012-02-21
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  • Grado de blanco base como óptico. Resistencia a la tracción

     Cayuela Marin, Diana; Tornero Garcia, Jose Antonio; Carrillo Navarrete, Fernando; Gutierrez Bouzan, Maria Carmen
    Date: 2012-02-09
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  • Factor de protección ultravioleta de los tejidos

     Carrillo Navarrete, Fernando
    Date: 2012-07-03
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  • Grado de blanco tanto base, como óptico. Resistencia a la tracción en seco y en mojado

     Cayuela Marin, Diana; Tornero Garcia, Jose Antonio; Carrillo Navarrete, Fernando; Gutierrez Bouzan, Maria Carmen
    Date: 2012-07-23
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  • Evaluación del nivel de manchado de dos productos

     Carrillo Navarrete, Fernando
    Date: 2012-02-13
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  • Grado de blanco tanto base como óptico

     Carrillo Navarrete, Fernando
    Date: 2012-02-06
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  • Informe técnico de seguimiento de calidad de las prendas

     Carrillo Navarrete, Fernando; Cayuela Marin, Diana; Tornero Garcia, Jose Antonio
    Date: 2012-06-05
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  • Determinar diferentes solideces

     Cayuela Marin, Diana; Carrillo Navarrete, Fernando
    Date: 2012-10-16
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  • Grado de blanco tanto base, como óptico, resistencia a la tracción

     Cayuela Marin, Diana; Tornero Garcia, Jose Antonio; Carrillo Navarrete, Fernando; Gutierrez Bouzan, Maria Carmen
    Date: 2012-03-19
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  • Solidez del color a la limpieza en seco

     Carrillo Navarrete, Fernando
    Date: 2012-02-24
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  • Grado de blanco tanto base, como óptico. Resistencia a la tracción en seco y en mojado

     Cayuela Marin, Diana; Tornero Garcia, Jose Antonio; Carrillo Navarrete, Fernando; Gutierrez Bouzan, Maria Carmen
    Date: 2012-07-11
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  • Composición cuantitativa

     Cayuela Marin, Diana; Carrillo Navarrete, Fernando
    Date: 2012-06-21
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  • To develop a procedure to improve light fastness

     Carrillo Navarrete, Fernando
    Date: 2012-03-26
    Report

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