期刊
REACTIVE & FUNCTIONAL POLYMERS
卷 121, 期 -, 页码 8-14出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.reactfunctpolym.2017.10.005
关键词
Dynamic polysulfide networks; Shape memory polymers; Vitrimer; Elemental sulfur; Thermo-/photo- plasticity
资金
- National Natural Science Foundation of China [21174089, 21674068, 51633004]
In this study, we demonstrate the synthesis of dynamic polysulfide networks through the solution poly condensation of pentaerythritol tetra(3-mercaptopropionate) (PTMP) with elemental sulfur by a reverse vulcanization process. Elemental sulfur content as high as 51% can be incorporated into the dynamic polysulfide networks. An important feature of the resulted polysulfide networks is their catalytic-free malleability, which implies that they have both thermo- and photo-induced solid-state plasticities to obtain a complex permanent shape due to the exchange of dynamic S-S bonds. These dynamic polysulfide networks have great potentials in fabricating complex three-dimensional shape memory devices for biological and mechanical applications.
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