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Segmental relaxation and partial crystallization of chain-extended Poly(l-lactic acid) reinforced with carboxylated carbon nanotube

Author
Yousefzade, O.; Valenti, S.; Puiggali, J.; Garmabi, H.; Macovez, R.
Type of activity
Journal article
Journal
Journal of polymer science. Part B, polymer physics
Date of publication
2019-02-15
Volume
57
Number
4
First page
222
Last page
233
DOI
https://doi.org/10.1002/polb.24774 Open in new window
Project funding
Micro-pieces constituted by biodegradable poly(ester amide)s loaded with bacteriophages and biomolecules susceptible to denaturation processes: Biomedical applications
Organic and Metallic Glasses: Dynamics, Recrystallization and Vibrational Properties
Repository
http://hdl.handle.net/2117/126422 Open in new window
URL
https://onlinelibrary.wiley.com/doi/abs/10.1002/polb.24774 Open in new window
Abstract
Temperature-modulated differential scanning calorimetry (TMDSC) and broadband dielectric spectroscopy (BDS) were employed to study the glass transition, size of the cooperative rearranging regions (CRRs), crystallization kinetics, and dielectric relaxation response of nanocomposites constituted by chain-extended poly(L-lactide) (PLLA) and carboxylated carbon nanotubes (f-CNTs). The CRR size and the number of relaxing structural units decreased in the presence of crystals during isothermal crysta...
Citation
Yousefzade, O., Valenti, S., Puiggali, J., Garmabi, H., Macovez, R. Segmental relaxation and partial crystallization of chain-extended Poly(l-lactic acid) reinforced with carboxylated carbon nanotube. "Journal of polymer science. Part B, polymer physics", 15 Febrer 2019, vol. 57, núm. 4, p. 222-233.
Keywords
PLLA nanocomposites, chain dynamics, constrained polymer chains, cooperative rearranging region, heterogeneity
Group of research
CRnE - Barcelona Research Center in Multiscale Science and Engineering
GCM - Group of Characterization of Materials
PSEP - Synthetic Polymers: Structure and Properties. Biodegradable Polymers.

Participants