Shape memory of hydrogen-bonded polymer network/poly(ethylene glycol) complexes

被引:103
作者
Liu, GQ [1 ]
Ding, XB [1 ]
Cao, YP [1 ]
Zheng, ZH [1 ]
Peng, YX [1 ]
机构
[1] Chinese Acad Sci, Chengdu Inst Organ Chem, Chengdu 610041, Peoples R China
关键词
D O I
10.1021/ma035717w
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Because of a large difference in storage modulus below and above the glass transition temperature, poly(acrylic acid-co-methyl methacrylate)/poly(ethylene glycol) (P(AA-co-MMA)/PEG) complexes show shape memory properties with a recovery ratio of nearly reach 99%. Before the shape memory testing, it was necessary to determine the conformational changes of the P(AA-co-MMA) gel induced by complexation with linear PEG. It was found that both the concentration and molecular weight of PEG have a strong effect on the complexation with P(AA-co-MMA) gel. In such a system the minimum molecular weight of PEG required for the complex formation lowers to 1000.
引用
收藏
页码:2228 / 2232
页数:5
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