Assessing the thermoformability of poly(3-hydroxybutyrate-co-3- hydroxyvalerate)/poly(acid lactic) blends compatibilized with diisocyanates
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Other documents of the author: González Ausejo, Jennifer; Sánchez-Safont, Estefanía; LAGARON, Jose; Olsson, R. T.; Gamez-Perez, Jose; Cabedo, Luis
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comunitat-uji-handle2:10234/7034
comunitat-uji-handle3:10234/8619
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Title
Assessing the thermoformability of poly(3-hydroxybutyrate-co-3- hydroxyvalerate)/poly(acid lactic) blends compatibilized with diisocyanatesAuthor (s)
Date
2017Publisher
ElsevierISSN
0142-9418; 1873-2348Type
info:eu-repo/semantics/articlePublisher version
http://www.sciencedirect.com/science/article/pii/S0142941817301034Version
info:eu-repo/semantics/acceptedVersionAbstract
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is a renewable alternative to conventional barrier
packaging polymers due to its thermoplastic properties, biodegradability and gas barrier performance
but its ... [+]
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is a renewable alternative to conventional barrier
packaging polymers due to its thermoplastic properties, biodegradability and gas barrier performance
but its potential industrial applications are limited by its high price and difficult processability. A thorough
study concerning the thermoforming ability of PHBV, and blends with poly(lactic acid) (PLA)
incorporating three different diisocyanates as compatibilizers (hexamethylene diisocyanate, poly(hexamethylene)
diisocyanate and 1,4-phenylene diisocyanate) is herein presented after component melt
blending. A straightforward universal qualitative method is proposed to assess the thermoformability,
based on a visual inspection of a thermoformed specimen and the ability to reproduce the mold shape,
and the thermoforming window of the material. The results reveal a significant improvement in the
thermoforming capacity and a widening of the thermoforming windows as the correct amounts of
diisocyanates are incorporated. The barrier properties and the biodisintegrability of the blends was also
studied, confirming a predictable slight decrease of the barrier performance when PLA is added, but
without negatively affecting the disintegrability under composting conditions with respect to pristine
PHBV. [-]
Is part of
Polymer Testing 62 (2017)Investigation project
AGL2015- 63855-C2-2-R ; PREDOC/2012/32 ; UJI-B2016-35Rights
0142-9418/© 2017 Elsevier Ltd. All rights reserved.
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info:eu-repo/semantics/openAccess
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