摘要
研究了丙烯酸丁酯—醋酸乙烯—丙烯酸三元乳液共聚合条件对乳胶粒表面羧基分布的影响。结果表明:NaHCO_3/AA、水/单体、BA/VAC 用量比及 AA 加入方式对表面羧基分布皆有明显的影响。乳化剂种类和用量对其影响较小。
The factors which may influence the distribution of carboxyl groups localized on the sur- face of particles (surface carboxyl groups) in the emulsion copolymerization of BA-VAc-AA have been examined.The results indicate that the distribution of carboxyl groups is dependent on the NaH- CO_3/AA,H_2O/monomer and BA/VAC ratio as well as the introduction method of AA,and is almost constant irrespective of the species or amount of emulsifying agent.
关键词
乳胶粒
羧基分布
乳液聚合
distribution of surface carboxyl groups
emulsion of copolymerization
carboxylated copolymer latex
latex of butyl acrylate copolymer
