Sano Junta, Habaue Shigeki
Department of Applied Chemistry, College of Engineering, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi 487-8501, Japan.
Polymers (Basel). 2020 May 20;12(5):1175. doi: 10.3390/polym12051175.
Novel interpenetrating polymer networks (IPNs) were synthesized from -isopropylacrylamide (NIPAM) and polysiloxanes containing a urea or thiourea side group, in addition to the silanol residue, through two reactions, such as the radical gelation of NIPAM and the condensation of silanols to form a siloxane linkage. The obtained IPNs showed a typical temperature-responsive volume change in water based on the constructed poly-NIPAM gel component. In addition, the characteristic color and volume changes responding to chemical stimuli, such as acetate and/or fluoride ions, based on the introduced urea and thiourea groups onto the polysiloxane gel were observed in -dimethylformamide.
新型互穿聚合物网络（IPN）由N-异丙基丙烯酰胺（NIPAM）和除硅醇残基外还含有脲或硫脲侧基的聚硅氧烷通过两种反应合成，例如NIPAM的自由基凝胶化和硅醇的缩合以形成硅氧烷键。基于构建的聚NIPAM凝胶组分，所获得的IPN在水中表现出典型的温度响应体积变化。此外，在N，N-二甲基甲酰胺中观察到基于引入到聚硅氧烷凝胶上的脲和硫脲基团对化学刺激（如乙酸根和/或氟离子）的特征颜色和体积变化。
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