Solution Properties of Amphoteric Random Copolymers Bearing Pendant Sulfonate and Quaternary Ammonium Groups with Controlled Structures,Langmuir

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Solution Properties of Amphoteric Random Copolymers Bearing Pendant Sulfonate and Quaternary Ammonium Groups with Controlled Structures
Langmuir ( IF 3.7 ) Pub Date : 2017-12-22 00:00:00 , DOI: 10.1021/acs.langmuir.7b03785
Rina Nakahata ₁ , Shin-ichi Yusa ₁

Affiliation

Amphoteric random copolymers P(AMPS/APTAC50)_x, where x = 41, 89, and 117, composed of sodium 2-acrylamido-2-methylpropanesulfonate (AMPS) and 3-acrylamidopropyltrimethylammonium chloride (APTAC) were prepared via reversible addition–fragmentation chain transfer radical polymerization. P(AMPS/APTAC50)_x can dissolve in pure water to form small interpolymer aggregates. In aqueous solutions of NaCl, P(AMPS/APTAC50)_x can dissolve in the unimer state. Amphoteric random copolymer P(AMPS/APTAC50)_c with high molecular weight was prepared via conventional free-radical polymerization. Although P(AMPS/APTAC50)_c cannot dissolve in pure water, it can dissolve in aqueous solutions of NaCl. In amphoteric random copolymers with high molecular weight, the possibility of continuous sequences of monomers with the same charge may increase, which may cause strong interactions between polymer chains. When fetal bovine serum (FBS) and polyelectrolytes were mixed in phosphate-buffered saline, the hydrodynamic radius and light-scattering intensity increased. There was no interaction between P(AMPS/APTAC50)_x and FBS because corresponding increases could not be observed.

中文翻译：

具有控制结构的侧链磺酸盐和季铵基团的两性无规共聚物的溶液性质

通过可逆加成-断裂链制备由2-丙烯酰胺基-2-甲基丙烷磺酸钠（AMPS）和3-丙烯酰胺基丙基三甲基氯化铵（APTAC）组成的两性无规共聚物P（AMPS / APTAC50）_x，其中x = 41、89和117。转移自由基聚合。P（AMPS / APTAC50）_x可溶于纯水，形成小的互聚物聚集体。在NaCl的水溶液中，P（AMPS / APTAC50）_x可以以单体状态溶解。通过常规的自由基聚合反应制备了高分子量的两性无规共聚物P（AMPS / APTAC50）_c。虽然P（AMPS / APTAC50）_c不能溶于纯净水，可以溶于氯化钠水溶液。在具有高分子量的两性无规共聚物中，具有相同电荷的单体连续排列的可能性可能会增加，这可能会导致聚合物链之间发生强烈的相互作用。当胎牛血清（FBS）和聚电解质在磷酸盐缓冲液中混合时，流体动力学半径和光散射强度增加。P（AMPS / APTAC50）_x与FBS之间没有相互作用，因为未观察到相应的增加。

更新日期：2017-12-22

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