Tironi Catarina Nardi, Graf Robert, Lieberwirth Ingo, Klapper Markus, Müllen Klaus
Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
Graduate School Material Science in Mainz, University of Mainz, Staudingerweg 9, 55128 Mainz,Germany.
ACS Macro Lett. 2015 Nov 17;4(11):1302-1306. doi: 10.1021/acsmacrolett.5b00714. Epub 2015 Nov 6.
Polyhydroxyethyl methacrylate--polysulfone amphiphilic polymer conetworks of two types of segments with above room temperature are presented. The conetworks are prepared by free radical copolymerization of methacryloyl-terminated PSU macromers with 2-ethyl methacrylate, followed by removal of the TMS protecting groups by acidic hydrolysis. Phase separation in the nanometer range due to the immiscibility of the two covalently linked segments is observed using transmission electron and scanning force microscopy. The swelling of the conetworks in water and methanol as polar solvents and chloroform as nonpolar solvent are studied gravimetrically and then in a more detailed fashion by solid-state NMR spectroscopy. Selective swelling and also targeted loading of a small organic model compound specifically to one of the two phases are demonstrated.
本文介绍了两种链段组成的聚甲基丙烯酸羟乙酯 - 聚砜两亲性聚合物互穿网络，其具有高于室温的温度。这些互穿网络是通过甲基丙烯酰基封端的聚砜大分子单体与甲基丙烯酸乙酯的自由基共聚制备的，随后通过酸性水解去除三甲基硅烷基保护基团。使用透射电子显微镜和扫描力显微镜观察到由于两个共价连接链段的不相容性导致的纳米级相分离。通过重量法研究了互穿网络在水、甲醇等极性溶剂以及氯仿等非极性溶剂中的溶胀情况，然后通过固态核磁共振光谱进行了更详细的研究。证明了选择性溶胀以及一种小的有机模型化合物特异性地靶向负载到两个相中之一。
