文献类型：期刊文献

中文题名：生物降解PBS/MMT共混体系结晶行为研究

英文题名：Study on Crystallization Behavior of Biodegradable PBS/MMT Blends

作者：王福春 王万坤 刘伟 张英哲 伍玉娇

第一作者：王福春

机构：[1]贵州省轻金属材料制备技术重点实验室,贵州贵阳550003;[2]贵州理工学院材料与冶金工程学院,贵州贵阳550003

第一机构：贵州省轻金属材料制备技术重点实验室,贵州贵阳550003

年份：2018

卷号：46

期号：4

起止页码：80-88

中文期刊名：塑料科技

外文期刊名：Plastics Science and Technology

收录：CSTPCD;;北大核心:【北大核心2017】；

基金：国家自然科学基金项目(51504073,51404081);贵州省教育厅自然科学基金项目(黔教科合KY[2015]433);贵州理工学院高层次人才基金项目(XJG20141104)

语种：中文

中文关键词：无机成核剂;蒙脱土;聚丁二酸丁二醇酯;结晶动力学

外文关键词：Inorganic nucleating agent; Montmorillonite; Poly（butylene succinate）; Crystallization kinetics

摘要：通过差示扫描量热仪及Avrami方程对聚丁二酸丁二醇酯/蒙脱土（PBS/MMT）共混体系的结晶熔融行为和非等温结晶动力学进行了表征和分析。结果表明：PBS在86.9℃处出现结晶峰;随着无机成核剂MMT的添加（添加量1%~5%）,PBS/MMT共混体系在120℃以上出现高温区结晶峰。PBS/MMT共混体系的低温区结晶温度、绝对结晶度和结晶活化能均高于纯PBS。随着MMT加入量的增加,共混体系的低温区结晶温度和绝对结晶度逐渐降低,结晶活化能呈现先升高后下降的趋势;高温区的结晶温度和结晶活化能逐渐升高,绝对结晶度则迅速下降,且当MMT加入量达到7%时,高温区结晶峰消失。MMT具有明显的异相成核作用,可以改变PBS结晶过程中的成核和增长方式,而对其结晶速率影响不显著,其结晶速率受降温速率的影响较大。
To investigate the effect of the inorganic nucleating agent, montmorillonite （MMT）, on the crystallization property of poly（butylene succinate） （PBS）, PBS/MMT blends had been prepared by melt blending method. The non-isothermal cooling crystallization and isothermal melting crystallization of PBS were characterized by differential scanning calorimetry, and studied by Avrami analysis. The results show that the inducing of MMT affects the crystallization properties of PBS. There is a new crystalline peak （high temperature area） in PBS/MMT blends at above 120~C when the contents of MMT are between 1% and 5%. The crystallizing temperature, overall crystallinity and crystallization activation energy of PBS/MMT blends are all higher than that of pure PBS at cooling process. For the low temperature crystalline area of PBS/MMT blends, the crystallizing temperature and overall crystallinity decline while the crystallization activation energy increases first and then decreases with the growing content of MMT. For the high temperature crystalline area of PBSIMMT blends, the crystallizing temperature and crystallization activation energy increase but the overall crystallinity decreases quickly with the increase of MMT content. The high temperature crystalline peak of PBS/MMT blends disappears when the contents of MMT are up to 7%. The addition of MMT can increase the crystal nuclei number of PBS due to the heterogeneous nucleation mechanism. Besides that, the rate of crystallization is affected by the cooling rate distinctly.