摘要
合成了一系列苯乙烯、丙烯酸丁酯和丙烯酸共聚乳液样品.对乳液的加氢滴定过程及其流变行为进行了讨论.结果表明,氨的加入使含羧基乳液的增稠效应随共聚物中羧基含量的增加和柔性链段的增多而增大;随着氨的加入量的递增,乳液的pH值和粘度多呈两次突变;乳液因聚合物组成和pH值不同而具有不同的流动特性.
In this paper, a series of styrene, butyl acrylate and acrylic acid copolymer latexes were synthesized by semi-batch emulsion copolymerization. Aqueous ammonia titration curves and rheologicl properties of latexes were discussed. It was found that effect of aqueous ammonia on alkali-thickening of latexes containing carboxyl group increases with the increasing of contents of carboxyl group and of soft segmer in copolymer, and that with the increasing of amounts of aqueous ammonia, pHs and viscosity of latexes mostly have two sharp changes, and that latexes have various rheological properties because of different copolymer components and pHs.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1993年第10期1456-1459,共4页
Chemical Journal of Chinese Universities
关键词
丙烯酸
粘度
流变性
高聚物乳液
Copolymer latex, Acrylic acid, Viscosity, Rheological property, Alkali-thickening
