流变学评价聚乳酸共混体系相容性的研究  

Rheological Evaluation of the Compatibility of Poly(lactic acid)Blending Systems

作　　者：杨宏伟 杜江华[1,2] 杨婷婷 喻迎春 王虎兰 于春晓 YANG Hongwei;DU Jianghua;YANG Tingting;YU Yingchun;WANG Hulan;YU Chunxiao(School of Materials Science and Engineering,North Minzu University,Yinchuan 750021,China;Key Laboratory of Polymer Materials and Manufacturing Technology,North Minzu University,Yinchuan 750021,China;Shandong Weigao Group Medical Polymer Products Co.,Ltd.,Weihai 264210,China)

机构地区：[1]北方民族大学材料科学与工程学院,宁夏银川750021 [2]北方民族大学高分子材料及制造技术重点实验室,宁夏银川750021 [3]山东威高集团医用高分子制品股份有限公司,山东威海264210

出　　处：《塑料工业》2022年第11期131-137,144,共8页China Plastics Industry

基　　金：宁夏自然基金项目(2022AAC03273)。

摘　　要：流变学是构建聚合物共混体系组成、相态结构和流变行为关系的一种有效手段。运用旋转流变仪,通过低频未端区斜率法、Cole-Cole曲线法、Han曲线法和Van Gurp-Palmen曲线法表征及探讨了不同分子量大小的聚乳酸组成的二元共混体系的相容性。结果表明,质量组分比为90/10的聚乳酸共混体系具有相容性高、黏度及模量大和塑化效果优的特点;通过流变学评价聚乳酸共混体系相容性的策略是可行的。Rheology was an effective mean to construct relationships between the composition,phase structure and rheological behavior of polymer blends.In this paper,the compatibility of binary blend systems composed of different molecular weight poly(lactic acid)(PLA)was characterized and investigated by low-frequency unterminated region slope method,Cole-Cole plot method,Han plot method and Van Gurp-Palmen plot method using a rotational rheometer.The results show that the PLA blends with a mass component ratio of 90/10 are characterized by high compatibility,high viscosity and modulus,and excellent plasticization effect,the strategy of evaluating the compatibility of poly(lactic acid)blends by rheology is feasible.

关 键 词：聚合物 聚乳酸 流变学 黏度 相容性 

分 类 号：TQ311[化学工程—高聚物工业] TQ321