Aqueous solution properties of poly[3‐dimethyl (methacryloyloxyethyl) ammonium propane sulfonate]
Aqueous solution properties of poly[3‐dimethyl (methacryloyloxyethyl) ammonium propane sulfonate]
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聚[3-二甲基（甲基丙烯酰氧基乙基）丙烷磺酸铵]的水溶液性质
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发表时间：
1987
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通讯作者：
Mei‐Chih Lin
中科院分区：
文献类型：
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作者：
D. Liaw;Wen;Yann‐Ching Whung;Mei‐Chih Lin
通过浊点测定、特性粘度、结合度和离子强度的测定，研究了两性聚[3-二甲基(甲基丙烯酰氧乙基)丙烷磺酸铵][聚(DMAPS)]的水溶液性质。该两性聚合物的最低盐浓度和特性粘度与加盐的类型和浓度有关。在氯化钠存在下，聚合甜菜碱和单体甜菜碱的结合程度都较低，这表明质子离子(H+)较难结合磺基甜菜碱端的SO−3。离子强度的增加导致pKa在半中和点降低。
The aqueous solution properties of an ampholytic poly[3-dimethyl (methacryloyloxyethyl) ammonium propane sulfonate] [poly(DMAPS)] are studied by measurements of cloud point determination, intrinsic viscosity, degree of binding, and ionic strength. The minimum salt concentration and intrinsic viscosity of this polyampholyte are related to the type and concentration of added salt. Both the polymeric and monomeric betaines in the presence of NaCl have the lower degree of binding, indicating that the proton ion (H+) is relatively difficult to bind the SO−3 at the end of sulfobetaine. An increase in ionic strength causes the pKa to decrease at the half-neutralization point.