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Multi-stimuli responsive shape memory polymers synthesized by using reaction-induced phase separation
來源:武榮蘭副教授個(gè)人網(wǎng)站 發(fā)布日期:2016-04-08
作者:Yufen Zhang, Xue Jiang, Ronglan Wu*, Wei Wang
關(guān)鍵字:copolymers, functionalization of polymers, polyurethanes, stimuli-sensitive polymers
論文來源:期刊
具體來源:Journal of Applied Polymer Science
發(fā)表時(shí)間:2016年

Thermo-induced multishape memory polymers are a growing focus of smart materials because of its promising applications.Multishape memory effect is generally attained by using polymers with broad phase transition and multiphase polymers. The latter is of particular interest for copolymerization and polymer compositing. One requirement has to be fulfilled to achieve multishape memory effect, which is to have two reversible phase transitions. In this study, we report synthesis of polymer composite composed of strong segregated polymers by using reaction-induced phase separation. We demonstrate the method by using polyurethane (PU) and poly(methacrylic acid) (PMAA). With adjusting the weight ratio, the polymer composites exhibit a phase spectrum from phase separation to miscible composite. The composite with PU/PMAA 53:1 demonstrated triple-shape memory effect. Based on the results, we argued the effect of segregation on the shape memory effect for polymer composites. With the addition of PMAA, the polymer composite also exhibits pH/water-induced shape memory effect.


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