Influence of Molecular Weight on Scaling Behavior of One Soluble Polyimide in Solution
In our previous work, one soluble of6FDA-TFDB polyimide (PI) was synthesized and its solution behavior was discussed 1.In this work, the soluble PI samples with different molecular weights (Mw from 52,000 g/mol to 407,000 g/mol) are synthesized.And the scaling exponent from the relationship between specific viscosity and concentration for different molecular weight PI/DMF solutions are determined.It is found that, in different concentration region, all the scaling exponents increase as the molecular weight increases.If the bead-bead interaction is considered that it is found that the corrected bead-spring model can explain the related results.Finally, the relationship between critical concentration and molecular weight is also built, which is helpful to guide the processing of polyimide solutions.
Ensong Zhang Hongxiang Chen Xuemin Dai Xuepeng Qiu Xiangling Ji
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry,Chin Polymer Composites and Engineering Laboratory, Changchun Institute of Applied Chemistry,Chinese Acad
国际会议
9th International Symposium on High-Tech Polymer Materials(第9届国际高技术高分子材料学术会议)(HTPM-9)
郑州
英文
56-56
2016-07-11（万方平台首次上网日期，不代表论文的发表时间）