Effect of the unidirectional drawing on the thermal and mechanical properties of PLA films with different L-isomer content
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Scholar |
Altres documents de l'autoria: Velázquez Infante, Julio César; Gamez-Perez, Jose; Franco Urquiza, Edgar A.; Santana Pérez, Orlando Onofre; Carrasco, Félix; Maspoch, Maria Lluïsa
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http://dx.doi.org/10.1002/app.37546 |
Metadades
Títol
Effect of the unidirectional drawing on the thermal and mechanical properties of PLA films with different L-isomer contentAutoria
Data de publicació
2013-02Editor
Wiley Periodicals, Inc.ISSN
0021-8995Cita bibliogràfica
VELAZQUEZ‐INFANTE, Julio Cesar, et al. Effect of the unidirectional drawing on the thermal and mechanical properties of PLA films with different L‐isomer content. Journal of Applied Polymer Science, 2013, 127.4: 2661-2669.Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://onlinelibrary.wiley.com/doi/10.1002/app.37546/abstractParaules clau / Matèries
Resum
This work simulates the thermoforming process of two different L-isomer content PLA grades (95.6 and 98%), studying the influence on the induced morphology and the variation in the thermal and tensile properties. The ... [+]
This work simulates the thermoforming process of two different L-isomer content PLA grades (95.6 and 98%), studying the influence on the induced morphology and the variation in the thermal and tensile properties. The thermoforming process was simulated with uniaxial tensile tests performed at different temperatures and strain rates, reporting the tensile behavior before, during, and after the test. The resulting structural changes were analyzed by wide-angle X-ray scattering and Fourier transformed infrared spectroscopy. Thermal characterization was carried out with differential scanning calorimetry and dynamomechanical thermal analysis. The results showed that, regardless the L-isomer content, drawing at 70°C produced a stable mesomorphic phase that showed greater tensile properties than the original films. This mesomorphic phase, indeed, could be reordered into a crystalline structure under mild annealing conditions (5 min/75°C), if compared with those needed for similar amorphous PLA specimens (60 min/120°C), thus providing a processing opportunity for obtaining thermally stable PLA products at temperatures above 100°C. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013 [-]
Publicat a
Journal of Applied Polymer Science, 2013Drets d'accés
© 2012 Wiley Periodicals, Inc.
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
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