【摘要】 以端基为8个丙烯酸酯双键的树状化合物和亚硫酸氢钠为原料合成了树状多磺酸钠(PSS)。研究了PSS的溶液性质,测定了PSS对苯甲酸的增溶性。实验结果表明,当PSS溶液pH=1.5～12.0,w(PSS)=1.0%～5.0%时,PSS溶液的黏度为3.6～3.8mPa·s;PSS溶液的黏度随其含量的变化规律与NaCl溶液相似;当PSS溶液pH=3.0～10.0时,w(PSS)=1.0%～5.0%的PSS溶液的电导率为0.64～1.12S/m,不随pH改变;PSS溶液的电导率随其含量的变化规律与海藻酸钠溶液相似。PSS溶液的临界胶束质量浓度为12.3g/L,最小表面张力为47.4mN/m(25℃)。在相同质量浓度0.500g/L时,PSS对苯甲酸的增溶量约是十二烷基硫酸钠的4倍。更多还原

【Abstract】 Dendritic poly(sodium sulfonate)(PSS) was synthesized from dendrimer with 8 acrylic ester double bonds and sodium bisulfite. Behavior of PSS aqueous solution was studied and its solubilization effect for benzoic acid was determined. When PSS mass fraction is 1.0%-5.0% and pH of its solution varies from 1.5 to 12.0,viscosity of the solution was between 3.6-3.8 mPa·s. The relationship of viscosity of PSS solution with its concentration was similar to that of sodium chloride solution. Conductivity of the PSS solution with mass fraction of PSS 1.0%-5.0% was between 0.64-1.12 S/m while pH of PSS solution keeps in the range of 3.0-10.0. The relationship of conductivity of the PSS solution with its concentration was similar to sodium alginate solution. The critical micelle mass concentration of PSS solution is 12.3 g/L. Its lowest surface tension is 47.4 mN/m(25 ℃). PSS solution exhibits obviously solubilization effect for benzoic acid which is about four times that of sodium dodecyl sulfate at same concentration of 0.500 g/L.更多还原