Compatibilization of poly(3-hydroxybutyrate-co-3-hydroxyvalerate)– poly(lactic acid) blends with diisocyanates
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comunitat-uji-handle2:10234/7034
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Title
Compatibilization of poly(3-hydroxybutyrate-co-3-hydroxyvalerate)– poly(lactic acid) blends with diisocyanatesAuthor (s)
Date
2017-02Publisher
WileyBibliographic citation
González-Ausejo, J., Sánchez-Safont, E., Lagarón, J. M., Balart, R., Cabedo, L. and Gámez-Pérez, J. (2017), Compatibilization of poly(3-hydroxybutyrate-co-3-hydroxyvalerate)–poly(lactic acid) blends with diisocyanates. J. Appl. Polym. Sci., 134, 44806. doi: 10.1002/app.44806Type
info:eu-repo/semantics/articlePublisher version
http://onlinelibrary.wiley.com/doi/10.1002/app.44806/fullSubject
Abstract
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) was blended with poly(lactic acid) (PLA) with various reactive processing agents to decrease its brittleness and enhance its processability. Three diisocyanates, ... [+]
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) was blended with poly(lactic acid) (PLA) with various reactive processing agents to decrease its brittleness and enhance its processability. Three diisocyanates, namely, hexamethylene diisocyanate, poly(hexamethylene diisocyanate), and 1,4-phenylene diisocyanate, were used as compatibilizing agents. The morphology, thermomechanical properties, and rheological behavior were investigated with scanning electron microscopy, thermogravimetric analysis, differential scanning calorimetry, tensile testing, dynamomechanical thermal analysis in torsion mode (dynamic mechanical analysis), and oscillatory rheometry with a parallel-plate setup. The presence of the diisocyanates resulted in an enhanced polymer blend compatibility; this led to an improvement in the overall mechanical performance but did not affect the thermal stability of the system. A slight reduction in the PHBV crystallinity was observed with the incorporation of the diisocyanates. The addition of diisocyanates to the PHBV–PLA blend resulted in a notable increase in the final complex viscosity at low frequencies when compared with the same system without compatibilizers [-]
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J. Appl. Polym. Sci. Volume 134, Issue 20, May 2017Rights
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