Mechanical Properties of Poly(3-hydrobutyrate-co-hydroxyvalerate)/ Biodegradable Hyperbranched Poly(ester amide) Blends

摘要：

　　Biodegradable composites were prepared by adding hyperbranched poly(ester amide) (HBPs) into poly(3-hydroxybutyrate-co-3-hydrovalerate) (PHBV) through melt blending method.It was found that the tensile strength and toughness of PHBV were simultaneously enhanced by the addition of HBPs.Compared with neat PHBV,the tensile strength of the composite increased about 23% from 20.96 to 25.87 MPa for the content of 2.5 wt.% HBPs,and more remarkable enhancement in tensile elongation at break can be achieved by about 88% for 5 wt.% HBPs.The influences of HBPs on crystallization,thermal and fracture morphologies of PHBV were further evaluated by using differential scanning calorimeter and scanning electron microscope,respectively.The decrease in the crystallinity of PHBV and high dispersion of the HBPs in PHBV matrix were observed,which should contribute to the improvement on the mechanical properties of PHBV.

关键词： Poly(3-hydroxybutyrate-co-3-hydrovalerate) Hyperbranched poly(ester amide) Mechanical properties Melt blending

作者: Pei Liu Long Chen Jun Xu Meifang Zhu Zongyi Qin

作者单位: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, and College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 436-441

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）