离聚体水基微乳液化的研究——聚苯乙烯离聚体微乳化过程相反转的表征

以乙酰磺酸为磺化剂制备磺化度为３～１５ｍｏｌ％的磺化聚苯乙烯（ＳＰＳ）并中和成盐．在一定的温度和搅拌速率下，加水将ＳＰＳ乳化成水包油的稳定水基微乳液．用乳化过程中体系电导率和粘度的变化表征了乳化相反转过程．研究了溶剂的极性和离子含量对聚苯乙烯离聚体溶液可乳化性和乳化过程及乳液稳定性的影响．

STUDIES ON WATERBORNE EMULSION OF IONOMER ——THE CHARACTERIZATION OF PHASE INVERSION OF LIGHTLY SULFONATED POLYSTYRENE DURING EMULSIFICATION PROCESS

Waterborne emulsions of lightly sulfonated polystyrene ionomer(SPS) were prepared by neutralizatioin with ammonia liquor and addition of water.The principle of emulsification was explained.The aggregated structure of SPS chains in organic solvents was discussed.SPS molecule chains can form a type of microionic lattice.The variations of the conductivity and viscosity of SPS ionomer solution during the emulsification process were studied.The emulsification process and phase inversion were characterized by using the variation of conductivity and viscosity.The emulsification process included the dissociation of the microionic lattices and aggregation of the hydrophobic segments.The aggregated structure of SPS ionomer chains in solvents varied with the variation of polar of solvents were studied and affected the emulsification process.The mechanism of the phase inversion was discussed.The effects of solvent polarity and ionic contents on the emulsification process were studied.The stability of emulsion were much affected by the ionic contents.The particle size increased with the decrease in ionic contents.