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Two-way shape memory polymer with “switch–spring” composition by interpenetrating polymer network

2014; Royal Society of Chemistry; Volume: 2; Issue: 44 Linguagem: Inglês

10.1039/c4ta03640a

2050-7488

You Wu, Jinlian Hu, Jiuhui Han, Yaofeng Zhu, Huahua Huang, Jianchao Li, Ben Zhong Tang,

Conducting polymers and applications

In the present work, a novel molecular strategy was employed to fabricate a two-way shape memory polymer (2WSMP), which is an interpenetrating network (IPN) with elastomeric and crystalline components leading to a “switch–spring” composition. In this 2WSMP the switch, a PCL crystalline network, is responsible for the reversible shape shrinkage. While the spring, the compressed PTMEG elastomeric network, provides the push force for shape expansion. This IPN polymer has the desired two-way shape effect (2WSME) as proved by DMA.