含丙烯酸的共聚乳液的碱增稠过程与流动行为  

Mechanism of Alkali-thickening and Behaviour of Flow of opolymer Containing Acrylic Acid Emulsions

作　　者：刘正平[1] 刘凤岐[1] 李志英[2] 汤心颐[1] 

机构地区：[1]吉林大学化学系,长春130023 [2]吉林工业大学应用化学系

出　　处：《高等学校化学学报》1993年第10期1456-1459,共4页Chemical Journal of Chinese Universities

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.

关 键 词：丙烯酸 粘度 流变性 高聚物乳液 

分 类 号：O623.612[理学—有机化学]