Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and wheat straw fibre composites: thermal, mechanical properties and biodegradation behaviour
作者： M. Avella , G. La Rota , E. Martuscelli , M. Raimo , P. Sadocco
关键词: Materials science 、 Cellulose 、 Biodegradation 、 Polyester 、 Composite material 、 Straw 、 Crystallinity 、 Crystallization 、 Stress (mechanics) 、 Natural fiber
摘要: The thermal and mechanical behaviour of a biotechnological polyester (poly(3-hydroxybutyrate-co-hydroxyvalerate) (PHBV) reinforced with wheat straw fibres has been investigated. In order to improve chemico-physical interactions between the components, reinforcing agent previously submitted treatment high temperature steam leading richer in cellulose more reactive. addition found increase rate PHBV crystallisation, while it does not affect crystallinity content. Furthermore, comparison properties shown that composites exhibit higher Young moduli lower values both stress (σB) strain (∈B) break than neat matrix PHBV. biodegradability different environments by means short long term tests studied. It observed presence biodegradation evaluated liquid environment soil burial tests. composting simulation test is reduced for 10% morphology also investigated correlated process.
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