甲基丙烯酸环氧丙酯共聚物乳液的研究

研究了以甲基丙烯酸环氧丙酯作为活性单体，采用种子乳液聚合制备四元体系的核—壳结构共聚物乳液，用透射电子显微镜观察了乳胶粒的微观形态，并对其稳定性、流变性等进行了测试，考察了甲基丙烯酸环氧丙酯及其含量对乳液性能的影响．

STUDY ON GLYCIDYL METHACRYLATE COPOLYMER EMULSION

he copolymer emulsion of acrylates with glycidyl methacrylate active monomer was prepared by semi -continuous seed emulsion copolymerization to four component copolymer;the copolymer emulsion was characterized by means of TEM,stability,rheological properties etc.,The effect of glycidyl methacrylate(GMA) and its content onthe properties of copolymer emulsion and copolymer films was studied;the self-crosslinking property was investigated by DSC.It has been found that the morphology of copolymer emulsion particle showed core-shell structure,and there is streaky transitive layer between core and shell;thus the functional groups were at the surface layer of particles as far as possible to make the crosslinking effect of the functional groups at sufficient level.This result corresponds with the result of DSC;the stability if electrolyte-resisting and centrifugal stability were decreased with the increase of glycidyl methacrylate content.The electrical conductivity was decreased with the increase of glycidyl.methacrylate also.The copolymer emulsion showed non-Newtonian flow behavior and it bears the characteristic of dilatant fluid.The apparent viscosity of copolymer emulsion was increased with the in crease of shear stress;moreover,the content of GMA affects the apparent viscosity.