Journal
POLYMERS
Volume 11, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/polym11030547
Keywords
poly(3-hydroxybutyrate-co-4-hydroxybutyrate); composites; cork; (bio)degradation; composting
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Funding
- National Science Centre, Poland (NCN SONATA 11 project) [2016/21/D/ST8/01993]
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The degree of degradation of pure poly(3-hydroxybutyrate-co-4-hydroxybutyrate) [P(3HB-co-4HB)] and its composites with cork incubated under industrial and laboratory composting conditions was investigated. The materials were parallelly incubated in distilled water at 70 degrees C as a reference experiment (abiotic condition). It was demonstrated that addition of the cork into polyester strongly affects the matrix crystallinity. It influences the composite degradation independently on the degradation environment. Moreover, the addition of the cork increases the thermal stability of the obtained composites; this was related to a smaller reduction in molar mass during processing. This phenomenon also had an influence on the composite degradation process. The obtained results suggest that the addition of cork as a natural filler in various mass ratios to the composites enables products with different life expectancies to be obtained.
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