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学科主题: 高分子化学
题名: Layered Metal Phosphonate Reinforced Poly(L-lactide) Composites with a Highly Enhanced Crystallization Rate
其他题名: 具有高度增强结晶速率的层状磷酸盐夹层的聚乳酸复合材料
作者: Pan PJ(潘鹏举) ; Liang ZC(梁子超) ; Cao AM(曹阿民) ; 井上义夫
通讯作者: 井上义夫
刊名: ACS Appl. Mater. Interfaces
发表日期: 2009
卷: 1, 期:2, 页:402-411
收录类别: SCI
部门归属: 东京工业大学; 上海有机所
英文摘要: Layer phosphonate zinc phenylphosphonate (PPZn) reinforced poly(L-lactide) (PLLA) composites were fabricated by a melt mixing technique. The nonisothermal and isothermal crystallization, melting behavior, spherulite morphology crystalline structure and static and dynamic mechanical properties of the PLLA/PPZn composites were investigated. PPZn shows excellent nucleating effects on PLLA crystallization. With incorporation of 0.02% PPZn. PLLA can finish crystallization under cooling at 10 degrees C/min. The crystallization half times of a PLLA/PPZn composite decrease from 28.0 to 0.33 min at 130 degrees C and from 60.2 to 1.4 min at 140 degrees C, compared to the neat PLLA. With the presence of PPZn, the nuclei number of PLLA increases and the spherulite size reduces significantly. Through analysis of the crystal structures of PLLA and PPZn, it was proposed that the nucleation mechanism of the PLLA/PPZn system is epitaxial nucleation. The incorporation of PPZn has no discernible effect on the crystalline structure of plla. Moreover PPZn has good reinforcement effects on the plla matrix. The tensile strength of the composites is enhanced with the addition of a relatively small amount of PPZn (<5%). The tensile and storage moduli of composites increase with increasing PPZn loadings, and they respectively improve by 28% and 34% with the incorporation of a 15% PPZn filler as compared to the neat PLLA.
语种: 英语
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WOS记录号: WOS:000267535700028
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/22944
Appears in Collections:高分子材料研究室_期刊论文

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Recommended Citation:
Pan PJ,Liang ZC,Cao AM,et al. Layered Metal Phosphonate Reinforced Poly(L-lactide) Composites with a Highly Enhanced Crystallization Rate[J]. ACS Appl. Mater. Interfaces,2009,1(2):402-411.
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