【摘要】 以阳离子度为 10 %、2 0 %、30 %的三种氯化二甲基二烯丙基铵 丙烯酰胺共聚物 (PDA)为对象 ,研究了滴定剂阴离子聚合物聚乙烯硫酸钾 (PVSK)标准溶液的浓度 ,PDA溶液的质量浓度、阳离子度和相对分子质量以及PDA溶液的 pH值对胶体滴定的影响。结果表明 :PVSK的较佳浓度为 0 .1～ 1.5mmol/L ;PDA试样的较佳的浓度上限为 15～ 4 5mg/L ;相对分子质量较高的PDA ,其较佳滴定质量浓度范围的上限值较低 ,但阳离子度的变化对滴定影响较小 ;溶液的 pH值对滴定无影响。更多还原

【Abstract】 The influencing factors on the colloidal titration of cationicity of dimethyldiallyl ammonium chloride-acrylamide copolymer (PDA) by potassium polyvinyl sulfate (PVSK), such as the concentrations of PVSK solution and PDA solution,the cationicity and the molecular weight of PDA and the pH of titration medium were studied.the results showed that the appropriate concentration of PVSK solution is 0.11.5 mmol/L; The upper limitl concentration of PDA solution is 1545 mg/L,the higher the molecular weight,the lower is the upper limit; but the effect of cationicity of PDA is lower than that of the molecular weight of PDA and the effect of the pH of titration medium is not observed.更多还原