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Published in: Polymer Bulletin 7/2021

15-07-2020 | Original Paper

Preparation, characterization and biodegradation of blend films of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) with natural biopolymers

Authors: Wan Nur Syahirah, Nor Azura Azami, Kai-Hee Huong, A. A. Amirul

Published in: Polymer Bulletin | Issue 7/2021

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Abstract

Blending of biodegradable poly(3-hydroxybutyrate-co-3-hydroxyvalerate) P(3HB-co-3HV) with natural polymer is one of alternative routes to improve the mechanical properties and reduce the cost of raw materials. Such blending is interesting to be implemented in packaging industry due to the low-cost materials, sustainable and eco-friendly. Therefore, in this study, P(3HB-co-6%3HV) copolymers synthesized by Cupriavidus malaysiensis USMAA2-4 were blended with different ratios of starch, cellulose or alginate through solvent casting technique. Hydrophilicity analysis revealed the density, water-absorption capacity and solubility of blend films increased proportionally with the increasing ratio of natural polymers. The degradation of the blend films was investigated in soil and lake. The highest percentage of degradation in the soil and lake were observed on the blend films containing starch and alginate, respectively. Meanwhile, blending of P(3HB-co-6%3HV) with cellulose has shown the lowest percentage of degradation on both locations. The blend films with 50:50 wt:wt% ratio of P(3HB-co-6%3HV): natural polymer from both locations was used for isolation of microbial degraders of poly(3-hydroxybutyrate) P(3HB), starch, cellulose or alginate. The PHAs degraders were identified from genus Cupriavidus, Acidovorax, Variovora, Streptomyces and Ideonella and two starch degraders were identified from genus Moraxella and Alcaligenes.

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Metadata
Title
Preparation, characterization and biodegradation of blend films of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) with natural biopolymers
Authors
Wan Nur Syahirah
Nor Azura Azami
Kai-Hee Huong
A. A. Amirul
Publication date
15-07-2020
Publisher
Springer Berlin Heidelberg
Published in
Polymer Bulletin / Issue 7/2021
Print ISSN: 0170-0839
Electronic ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-020-03286-1

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