摘要
采用苯乙烯(St)、二乙烯基苯(DVB)、甲基丙烯酰氧乙基三甲基氯化铵(DMC)为单体,在乙醇和水混合介质中通过无皂乳液聚合法制备了非球形聚苯乙烯(PS)粒子。通过FT-IR、TEM和激光粒度及电位分析仪对粒子的结构、形貌、粒径以及Zeta电位进行了表征。结果表明,所合成PS粒子均含三种单体结构单元,且形貌上均为非球形;随着DVB用量的增加,PS粒子形貌更趋于球形,粒径和单分散系数均逐渐增加;随DMC用量增加,PS粒子粒径随之增加,单分散系数逐渐减小,表面Zeta电位也逐渐增加;KHCO3用量的增加能使PS粒子粒径和单分散系数均增加;随着醇水比的减小,PS粒子粒径逐渐减小,而单分散系数则逐渐增加。
The non-spherical polystyrene(PS)particles were synthesized via soap-free emulsion polymerization with styrene(St),divinyl benzene(DVB),methacryloyloxy trimethyl ammonium chloride(DMC)as monomers in ethanol and water mixed medium.The structure,morphology,particle size and surface potential were analyzed by FT-IR,TEM,laser particle size and potential analyzer.The results indicate that the PS particles contain three kinds of structural unit and have non-spherical morphology;With the increase of dosage of DVB,PS particle morphology tend to be more spherical,particle size and monodisperse coefficient increase gradually; With the increase of DMC dosage,PS particle size increase,monodisperse coefficient decreases,surface Zeta potential also gradually increased;An increase in the amount of KHCO3 can make the PS particles size and monodisperse coefficients increase;With the decrease of the alcohol water ratio,PS particle size decreases,while monodisperse coefficient increases gradually.
出处
《高分子通报》
CAS
CSCD
北大核心
2015年第2期52-57,共6页
Polymer Bulletin
基金
国家自然科学基金项目(11174075)
湖北省自然科学基金项目(2010CDB05807)
关键词
无皂乳液聚合
非球形PS粒子
交联
ZETA电位
Soap-free emulsion polymerization
Nonspherical polystyrene particle
Crosslinking
Zeta potential
