Transesterification induced mechanical properties enhancement of PLLA/PHBV bio-alloy

	Transesterification induced mechanical properties enhancement of PLLA/PHBV bio-alloy
	Yang, Jian 1; Zhu, Haijin 2,3; Zhang, Chunbo 1; Jiang, Qianhong 1; Zhao, Ying 1; Chen, Peng 4; Wang, Dujin 1
刊名	POLYMER
	2016-01-28
卷号	83 页码:230-238
关键词	Poly(L-lactic acid) (PLLA) Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) Blends
英文摘要	In order to improve the miscibility and mechanical properties of poly(L-lactic acid) (PLLA) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) bio-alloy, small amount of transesterification catalyst, zinc acetate was added in the melt blending process. We show that the PLLA-PHBV copolymer generated during the melt blending significantly improves the miscibility and therefore enhances the mechanical properties of the product. Dynamic mechanical analysis (DMA), scanning electron microscopy (SEM), and tensile tests were performed to study the miscibility and mechanical properties of the blends. Fourier transform infrared spectroscopy (FTIR) and gel permeation chromatography (GPC) were used to reveal the molecular structural, and molecular weight changes of PLLA and PHBV after melt mixing with zinc acetate. SEM and FTIR results have clearly shown that the PLLA-PHBV copolymer generated from transesterification reaction acted as a compatibilizer and therefore resulted in an improved interfacial miscibility and ductility of PLLA/PHBV blend. In our mechanistic study, a competition between the PLLA/PHBV transesterification reaction and the thermal decomposition of PHBV was identified for the first time. On the basis of these observations, a new mechanism of transesterification reaction was proposed. (C) 2015 Elsevier Ltd. All rights reserved.
收录类别	SCI
语种	英语
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/30078]
专题	化学研究所_工程塑料实验室
作者单位	1.Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Deakin Univ, Inst Frontier Mat, Geelong, Vic 3216, Australia 3.Deakin Univ, ARC Ctr Excellence Electromat Sci, Geelong, Vic 3216, Australia 4.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo Key Lab Polymer Mat, Ningbo 315201, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Yang, Jian,Zhu, Haijin,Zhang, Chunbo,et al. Transesterification induced mechanical properties enhancement of PLLA/PHBV bio-alloy[J]. POLYMER,2016,83:230-238.
APA	Yang, Jian.,Zhu, Haijin.,Zhang, Chunbo.,Jiang, Qianhong.,Zhao, Ying.,...&Wang, Dujin.(2016).Transesterification induced mechanical properties enhancement of PLLA/PHBV bio-alloy.POLYMER,83,230-238.
MLA	Yang, Jian,et al."Transesterification induced mechanical properties enhancement of PLLA/PHBV bio-alloy".POLYMER 83(2016):230-238.