期刊
MACROMOLECULES
卷 50, 期 1, 页码 364-374出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.6b01955
关键词
-
资金
- ImPACT for Realizing an Ultrathin and Flexible Tough Polymer
- Grants-in-Aid for Scientific Research [16H06355] Funding Source: KAKEN
We prepared building blocks with the ability to form a polymer network, a polyrotaxane (PR) structure that enhances the flexibility of the polymer network, and thermosensitive dangling chains that impart the polymer network with rapid sensitivity. First, thermosensitive poly(N-isopropylacrylamide) (PNIPA) was grafted from alpha-cyclodextrin, a cyclic molecule of PR, via controlled radical polymerization. The terminal chlorinated alkyl group of the grafted PNIPA was then modified with azide or alkyne. As a result, we obtained two types of PNIPA-grafted PR molecules with different terminations of PNIPA as building blocks. We then prepared a polymer network in which PR molecules with several dangling PNIPA chains were connected by PNIPA chains using a click reaction. Because of the presence of the dangling PNIPA chains, the obtained hydrogel exhibits rapid responses to changes in water temperature; it also exhibits flexibility due to the presence of the PR structure.
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