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Erschienen in:
2016 | OriginalPaper | Buchkapitel
104. Study on the Biodegradation Performance of P(3HB-co-4HB) in Phosphate Buffer
verfasst von : Jing Zhang, Bin Liang, Rui Zang, Fazhong Zhang
Erschienen in: Advanced Graphic Communications, Packaging Technology and Materials
Verlag: Springer Singapore
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Abstract
As a kind of fully biodegradable, biocompatible, and environment-friendly thermoplastic polymer materials, more and more scholars began to study the P(3HB-co-4HB). In this paper, five kinds of 4HB molar fraction of P(3HB-co-4HB) biodegradability in phosphate buffer containing lipase were studied in the analysis of the degradation mechanism and degradation factors. Characterization of biodegradable performance was characterized by weight loss, molecular weight change, and membrane surface morphology. The results showed that 4HB molar fraction has little effect on the enzymatic degradation. During the five kinds of P(3HB-co-4HB) degradation process, the weight loss rate and molecular weight decreased rate have little difference. P(3HB-co-15 %4HB) has a lower degree of crystallinity and good surface roughness, so the degradation rate is the best of all. SEM image indicated that lipase for P(3HB-co-4HB) has a faster degradation, and its enzymatic degradation process is a surface corrosion process.