Enzymatic Degradation of Poly(butylenesuccinate)/Thermoplastic Starch Blend

• 作者: Aleksandra Lange Anna Kundys Justyna Ostrowska Magdalena Paluch Urszula Chojnacka Zuzanna Grodzka
• 来源期刊: 可再生材料杂志(英文)
• 学科: 化学
• 关键词: Poly(butylene succinate) STARCH a-amylase RHIZOPUS ORYZAE urea
• 年，卷（期）: kzsclzzyw_2018,（6）
• 页码范围: 611-618
• 页数: 8页
• 分类号: O63

摘要

The degradation of thermoplastic starch blend in the presence of commerciala-amylase and unpurified amylase of microbial origin was investigated.The blends consisting of thermoplastic starch and poly(butylene succinate)have potential use in packaging applications thus,it is essential to establish susceptibility to degradation.Molar mass loss,gravimetric weight loss,and molecular structure were evaluated.The changes in the surface were observed with scanning electron microscopy.It was confirmed that there was a significant difference in gravimetric weight loss between the blends degraded in two different solutions.Unpurified enzymes of microbial origin,produced by Rhizopus oryzae cultures decomposed analyzed materials more efficiently than purified commercial ones.Moreover,it was proved that in applied conditions,the molar mass of PBS fraction did not change significantly.