电导滴定法研究阳离子乳胶粒的导电性能及其在棉织物上的吸附

阳离子乳胶粒与棉纤维存在静电作用而发生吸附,研究其导电能力与吸附作用具有重要理论和应用价值.采用电导滴定法通过测定乳胶粒表面氯离子含量,研究了乳胶粒的导电能力,并探讨了乳胶粒在棉纤维表面的吸附模型.结果表明,阳离子乳胶粒的浓度（cp）在0.05 ～0.3×10-8 mol/L范围内与电导率（A）呈良好的线性关系（A=8.0913cp＋1.8093,R2=0.9986）;根据电解质理论计算得出阳离子乳胶粒中胶核的极限摩尔电导率在恒定温度（25℃）下随着乳胶粒浓度的增加呈降低趋势;此外,阳离子乳胶粒在棉纤维表面的吸附符合Langmuir型吸附模型.

Effect of Polymerization Temperature on Cationic Emulsion Properties

The objective of this work was to analyze the effects of the polymerization temperature on the kinetic features(instantaneous and overall conversions)and colloidal characteristics[mean particle diameter,stabilities]in the semicontinuous seeded cationic emulsion polymerization of styrene and butyl acrylate.Azobis is obutyl amidine hydrochloride was used as an initiator.The surfactants wascetyl trimethyl ammonium chloride.The results showed that the final instant when the polymerization temperature of 85℃emulsion highest conversion rate,and the temperature of the emulsion particle size,centrifugal stability is the best,85℃emulsion in the emulsion anti-dilution and acid salt stability also showed excellent stability.