Poly(alkyl methacrylate-b-sulfonated glycidyl methacrylate). A new amphiphilic polymeric surfactant for the preparation and stabilization of polymer acrylic latices in aqueous medium
Poly(alkyl methacrylate-b-sulfonated glycidyl methacrylate). A new amphiphilic polymeric surfactant for the preparation and stabilization of polymer acrylic latices in aqueous medium
复制标题
聚(甲基丙烯酸烷基酯-b-磺化甲基丙烯酸缩水甘油酯)。
DOI：
10.1021/ma00022a005
复制
发表时间：
1991
期刊：
影响因子：
--
通讯作者：
N. C. D. Jaeger
中科院分区：
文献类型：
--
作者：
L. Leemans;R. Fayt;P. Teyssie;N. C. D. Jaeger
聚(甲基丙烯酸烷基酯-6-磺化甲基丙烯酸缩水甘油酯)S是一类新型的两亲性嵌段聚合物表面活性剂，可用于在水介质中制备和稳定超细聚合物丙烯酸酯胶乳。强阴离子嵌段聚电解质创建了一种静电屏障，有效地阻止了粒子的絮凝。这些聚合物表面活性剂稳定的胶乳获得了较高的临界凝聚浓度。在乳液自由基乳液聚合中，用聚甲基丙烯酸烯丙酯取代了锚定的聚甲基丙烯酸甲酯嵌段，聚合物表面活性剂与粒子发生共价键合，GPC测试表明发生了交联。光子相关光谱测量给出了平均吸附层厚度的估计，这与聚电解质块的延伸链长密切相关。
Poly (alkyl methacrylate-6-sulfonated glycidyl methacrylate) s are a class of new amphiphilic block polymeric surfactants that can be used for the preparation and stabilizationof very fine and stable polymer acrylic latices in aqueous medium. The strong anionic block polyelectrolyte creates an electrosteric barrier that efficiently prevents particles for flocculation. High critical coagulation concentrations were obtained for these polymeric surfactant-stabilized latices. By substituting the anchoring poly (methyl methacrylate) block by a poly (allyl methacrylate) in the radicalemulsion polymerization of latices, the polymeric surfactant becomes covalently linked with the particles, and cross-linking occurs as evidenced by GPC measurements. Photon correlation spectrometry measurements give an estimate of the average adsorbed layer thickness, closely corresponding to the extended chain length of the polyelectrolyte block.