EFFECT OF ADDITIVES ON PHASE-TRANSITION OF N-ISOPROPYLACRYLAMIDE GELS
EFFECT OF ADDITIVES ON PHASE-TRANSITION OF N-ISOPROPYLACRYLAMIDE GELS
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DOI：
10.1021/la00038a064
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发表时间：
1992-02-01
期刊：
影响因子：
3.9
通讯作者：
SAITO, S
中科院分区：
文献类型：
--
作者：
INOMATA, H;GOTO, S;SAITO, S
研究了盐对N-异丙基丙烯酰胺凝胶体积相变和聚N-异丙基丙烯酰胺溶液浊点的影响。实验用无机盐和四烷基铵盐进行。无机盐的转变温度主要取决于阴离子而不是阳离子，转变温度的变化与阴离子的粘度B系数呈线性相关。另一方面，四烷基溴化铵的转变温度强烈依赖于烷基链的长度，这被怀疑是由于吸附的盐的聚合物链段。
Effects of salts on volume phase transition of N-isopropylacrylamide gels and cloud points of poly-(N-isopropylacrylamide) solution were measured. The experiments were performed with inorganic salts and tetraalkylammonium salts. The transition temperature for inorganic salts was dependent on anions rather than cations, and the change in transition temperature was linearly correlated with the viscosity B coefficient of anions. On the other hand, the transition temperature for tetraalkylammonium bromides strongly depended on alkyl chain length, which was suspected to result from an adsorption of the salts to the polymer segments.