多途径调控聚乳酸发泡研究进展  

Research progress of crystallization controlled PLA foamed by supercritical carbon dioxide

作　　者：王市伟[1] 宋彤 梁超博 蒋晶[2] 李倩[1] WANG Shiwei;SONG Tong;LIANG Chaobo;JIANG Jing;LI Qian(National Center for International Joint Research of Micro-Nano Molding Technology,School ofMechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China;School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China)

机构地区：[1]郑州大学力学与安全工程学院,微纳成型技术国际联合研究中心,河南郑州450001 [2]郑州大学机械与动力工程学院,河南郑州450001

出　　处：《湖北大学学报（自然科学版）》2022年第2期220-228,共9页Journal of Hubei University：Natural Science

基　　金：国家自然科学基金(U1909219)资助。

摘　　要：超临界流体具有类似气体的扩散性及液体的溶解能力,同时兼具低黏度、低表面张力的特性.二氧化碳没有毒性,临界温度低、价格便宜,因而借助超临界二氧化碳进行高分子材料的成型加工成为近年来的研究热点,尤其是将超临界二氧化碳用于聚合物发泡.聚乳酸作为一种典型的可降解高分子材料,其结构调控以及相关的加工技术引起研究者的普遍关注.本研究围绕超临界二氧化碳发泡结晶调控聚乳酸,从填料、结晶行为调控、加工工艺和基体改性等方面进行系统的分析和讨论,并在此基础上对该领域的发展前景进行展望.Supercritical fluid has low viscosity and surface tension,and the similarity characteristics of gas diffusion and liquid solubility.Carbon dioxide has no toxicity,low critical temperature and cost performance,the supercritical carbon dioxide induced polymer foaming becomes a research hot spot in recent years.Polylactic acid is a typical degradable polymer material,its structural regulation and related processing technology have attracted many researchers′attention.In this review,the crystalline controlled polylactic acid foamed by supercritical carbon dioxide was systematically analyzed and discussed from the aspects of filler,crystallization behavior,processing technology and matrix modification.The development prospects of this field were also discussed.

关 键 词：聚乳酸 超临界二氧化碳 发泡 结晶 

分 类 号：TQ328.06[化学工程—合成树脂塑料工业]