摘要
采用透射电镜观测了苯乙烯-丙烯酸丁酯-丙烯酸乳液共聚体系的乳胶粒形态,讨论了组分含量、共聚物链柔性和乳液pH值等因素对乳胶粒形态、乳液粘度及成膜性的影响.结果表明:软单体的加入和体系pH值的提高将促进乳胶粒的粘连成膜和溶涨及部分聚合物的溶解.羧基主要富集于乳胶粒表面.
The morphology of latex particles of acrylic acid/butyl acrylate/styrene copolymer emulsion have been examined by transmission electron microscopy (TEM). The effect of copolymer composition , flexible segment and acidity adjusted with aqueous ammonia of the systems on the morphology of latex particles has been discussed. The morphology of soft latex particles was observed successfully by TEM after using phosphotungstic acid (PTA) served as support and a negative stain. In an usual condition , the state of film-forming copolymer existence was supposed.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1993年第3期417-420,共4页
Chemical Journal of Chinese Universities
关键词
乳胶粒
苯丙共聚物
丙烯酸
Latex particle, Morphology, Styrene-acrylic copolymer, Acrylic acid
