Shape memory polyimides based on different pendant structures

被引：1

作者：

Ma, Shengqi ^{[1
,2
]}

Zhang, Ke ^{[2
]}

He, Hongru ^{[2
]}

Wang, Shuli ^{[3
]}

Yao, Jianan ^{[1
]}

Zhao, Xiaogang ^{[2
]}

机构：

[1] Donghua Univ, Coll Mat Sci & Engn, Ctr Adv Low Dimens Mat, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201600, Peoples R China

[2] Jilin Univ, Coll Chem, Natl & Local Joint Engn Lab Synth Technol High Per, Key Lab High Performance Plast,Minist Educ, Changchun 130012, Peoples R China

[3] China Text Acad, State Key Lab Biobased Fiber Mfg Technol, Beijing 100025, Peoples R China

来源：

POLYMER TESTING | 2023年 / 123卷

关键词：

Shape memory polyimide; Chain structure; Rheological properties; RELAXATION BEHAVIOR; POLYMERS;

D O I：

10.1016/j.polymertesting.2023.108034

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Shape memory materials with controllable property for harsh condition like high temperature are strongly required. Here, three novel shape memory polyimides (SMPIs) have been realized by bearing various side-chain groups (-H, -CH3 or -OCH3) to study their relationship between structures and shape memory performances. These PIs possess excellent shape memory behaviors in both fixity ratio (Rf > 99.1%) and recovery ratio (Rr > 86.8%). The rheological information revealed different creep and stress relaxation accompanied with the different SMPIs. Meanwhile, fractional free volume (FFV) and simulating of geometry optimized molecule chain via Materials Studio were referred to reveal the inner relationship between shape memory performance and polymer structure. This work provides a design metric to guiding significance to the structure design of shape memory polyimides.

引用

页数：8

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