Hils Christian, Fuchs Emma, Eger Franziska, Schöbel Judith, Schmalz Holger
Macromolecular Chemistry II, Universität Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany.
Macromolecular Chemistry & New Polymeric Materials, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, Germany.
Chemistry. 2020 May 4;26(25):5611-5614. doi: 10.1002/chem.202000485. Epub 2020 Apr 24.
Multiresponsive polymers that can respond to several external stimuli are promising materials for a manifold of applications. Herein, a facile method for the synthesis of triple-responsive (pH, temperature, CO ) poly(N,N-diethylaminoethyl methacrylamide) by a post-polymerization amidation of poly(methyl methacrylate) (PMMA) is presented. Combined with trivalent counterions ([Fe(CN) ] ) both an upper and lower critical solution temperature (UCST/LCST)-type phase behavior can be realized at pH 8 and 9. PMMA and PMMA-based block copolymers are readily accessible by living anionic and controlled radical polymerization techniques, which opens access to various responsive polymer architectures based on the developed functionalization method. This method can also be applied on melt-processed bulk PMMA samples to introduce functional, responsive moieties at the PMMA surface.
能够响应多种外部刺激的多响应性聚合物是一类具有广阔应用前景的材料。本文介绍了一种通过聚甲基丙烯酸甲酯（PMMA）的后聚合酰胺化反应合成三响应性（pH、温度、CO）聚（N，N - 二乙基氨基乙基甲基丙烯酰胺）的简便方法。与三价抗衡离子（[Fe(CN)]）相结合，在pH为8和9时可实现上临界溶液温度（UCST）和下临界溶液温度（LCST）型的相行为。通过活性阴离子聚合和可控自由基聚合技术可以很容易地制备PMMA和基于PMMA的嵌段共聚物，这为基于所开发的功能化方法获得各种响应性聚合物结构开辟了道路。该方法还可应用于熔融加工的块状PMMA样品，以在PMMA表面引入功能性的响应基团。
