Improvement in toughness of polylactide by melt blending with bio-based poly(ester)urethane

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2014专题

	Improvement in toughness of polylactide by melt blending with bio-based poly(ester)urethane
	Yu, Rui-lei ; Zhang, Li-sheng ; Feng, Yu-hong ; Zhang, Ruo-yu ; Zhu, Jin
刊名	CHINESE JOURNAL OF POLYMER SCIENCE
	2014
卷号	32 期号:8 页码:1099
中文摘要	Polylactide (PLA) was successfully toughened by blending with bio-based poly(ester)urethane (TPU) elastomers which contained bio-based polyester soft segments synthesized from biomass diols and diacids. The miscibility, mechanical properties, phase morphology and toughening mechanism of the blend were investigated. Both DSC and DMTA results manifested that the addition of TPU elastomer not only accelerated the crystallization rate, but also increased the final degree of crystallinity, which proved that TPU has limited miscibility with PLA and has functioned as a plasticizer. All the blend samples showed distinct phase separation phenomenon with sea-island structure under SEM observation and the rubber particle size in the PLA matrix increased with the increased contents of TPU. The mechanical property variation of PLA/TPU blends could be quantitatively explained by Wu's model. With the variation of TPU, a brittle-ductile transition has been observed for the TPU/PLA blends. When these blends were under tensile stress conditions, the TPU particles could be debonded from the PLA matrix and the blends showed a high ability to induce large area plastic deformation before break, which was important for the dissipation of the breaking energy. Such mechanism was demonstrated by tensile tests and scanning electron microcopy (SEM) observations.
公开日期	2015-09-20
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/11798]
专题	宁波材料技术与工程研究所_2014专题
推荐引用方式 GB/T 7714	Yu, Rui-lei,Zhang, Li-sheng,Feng, Yu-hong,et al. Improvement in toughness of polylactide by melt blending with bio-based poly(ester)urethane[J]. CHINESE JOURNAL OF POLYMER SCIENCE,2014,32(8):1099.
APA	Yu, Rui-lei,Zhang, Li-sheng,Feng, Yu-hong,Zhang, Ruo-yu,&Zhu, Jin.(2014).Improvement in toughness of polylactide by melt blending with bio-based poly(ester)urethane.CHINESE JOURNAL OF POLYMER SCIENCE,32(8),1099.
MLA	Yu, Rui-lei,et al."Improvement in toughness of polylactide by melt blending with bio-based poly(ester)urethane".CHINESE JOURNAL OF POLYMER SCIENCE 32.8(2014):1099.