粒子尺寸与表面改性对聚对二氧环己酮(PPDO)/CaCO3复合物结晶性能的影响

Effect of Particle Size and Surface Treatment on Crystallization Behaviour of Poly(para-dioxanone)/CaCO3 Composites

作者：钟飞(荆州理工职业学院化学工程系；中国科学院成都有机化学研究所)；陈栋梁(中国科学院成都有机化学研究所)；白威(中国科学院成都有机化学研究所)；熊成东(中国科学院成都有机化学研究所)

Author：Zhong Fei(Dept. of Chemical Eng.,Jinzhou Vocational College of Technol.;Chengdu Inst. of Organic Chemistry,Chinese Academy of Sci.)；Chen Dongliang(Chengdu Inst. of Organic Chemistry,Chinese Academy of Sci.)；Bai Wei(Chengdu Inst. of Organic Chemistry,Chinese Academy of Sci.)；Xiong Chengdong(Chengdu Inst. of Organic Chemistry,Chinese Academy of Sci.)

收稿日期：2012-03-20 年卷（期）页码：2012,44(4):201-203

期刊名称：工程科学与技术

Journal Name：Advanced Engineering Sciences

关键字：聚对二氧环己酮；碳酸钙；复合物；结晶性能

Key words：poly(para-dioxanone),PPDO;CaCO3;composites;crystallization behaviour

基金项目：国家自然科学基金资助项目(51103156)；中国科学院“西部之光”人才培养计划资助项目

中文摘要

通过选用3种不同的CaCO3粒子：纳米CaCO3粉料、CaCO3晶须和偶联剂处理的CaCO3晶须，在有机溶液中与聚对二氧环己酮（PPDO）进行溶液共混，制备了3种不同的PPDO/CaCO3复合材料。并采用差示扫描量热计(DSC)表征样品的热力学行为,偏光显微镜(POM)观察球晶形态和XRD研究晶体结构。结果表明,纳米无机粒子由于粒径较小，作为成核剂更有利于PPDO分子的异相成核，使其复合物结晶能力最强。

英文摘要

Poly(para-dioxanone)(PPDO)-based composites was prepared by blending PPDO with three different types of CaCO3 particles, nano-CaCO3, CaCO3 whisker, and silane-coated CaCO3 whisker. The effects of particle size and composition on thermal properties and crystalline structure of the composites were investigated using differential scanning calorimetry(DSC), polarizing optical microscopy（POM）and X-ray diffraction(XRD). DSC revealed that the CaCO3 particles acted as a nucleating agent and promoted the crystallinity of PPDO. The decrease of particle size led to the increase of crystallinity, due to the greater nucleating efficiency of the smaller particles.

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论文摘要

粒子尺寸与表面改性对聚对二氧环己酮(PPDO)/CaCO3复合物结晶性能的影响

Effect of Particle Size and Surface Treatment on Crystallization Behaviour of Poly(para-dioxanone)/CaCO3 Composites