Abstract A new cationic polyelectrolyte, constituting with quaternary poly(4-vinyl pyridine) (PVPy) backbone and methacrylate pendant groups was prepared by spontaneous polymerization methodology. Thus, action of 2-bromoethyl methacrylate (BEMA) on 4-vinyl pyridine resulted in spontaneous polymerization of vinyl pyridine monomer, without initiator, while methacrylate double bonds remaining unreacted. The resulting water-soluble polymer (QMEP); poly(2-methacryloyloxyethyl 4-vinyl pyridinium bromide) was demonstrated to undergo rapid gelation in concentrated aqueous solutions via self-crosslinking of the methacrylate pendant groups by radical polymerization (The abbreviation QMEP stands for quaternary methacrylate functional polymer). Crosslinking densities of QMEP hydrogels estimated by “Phantom Network Model” using equilibrium swelling values, revealed 62.5% of the residual methacrylate double bonds. QMEP was also employed as multifunctional crosslinker for synthesis of highly swelling hydrogels derived from a set of monomers, such as acrylic acid, acrylamide, N-vinyl formamide and N-vinyl pyrrolidinone.

中文翻译：

---

水溶性多功能交联剂甲基丙烯酸酯悬垂聚电解质的合成

摘要 采用自发聚合法制备了一种新型阳离子聚电解质，其由季聚（4-乙烯基吡啶）（PVPy）主链和甲基丙烯酸酯侧基组成。因此，甲基丙烯酸 2-溴乙酯 (BEMA) 对 4-乙烯基吡啶的作用导致乙烯基吡啶单体的自发聚合，而没有引发剂，而甲基丙烯酸酯双键保持未反应。所得水溶性聚合物（QMEP）；聚（2-甲基丙烯酰氧基乙基 4-乙烯基溴化吡啶鎓）被证明通过自由基聚合（缩写 QMEP 代表甲基丙烯酸季铵盐官能聚合物）通过甲基丙烯酸酯侧基的自交联在浓水溶液中快速凝胶化。QMEP 水凝胶的交联密度通过“幻影网络模型”使用平衡溶胀值估算，揭示了 62.5% 的残留甲基丙烯酸酯双键。QMEP 还被用作多功能交联剂，用于合成源自一组单体（如丙烯酸、丙烯酰胺、N-乙烯基甲酰胺和 N-乙烯基吡咯烷酮）的高溶胀水凝胶。