聚_甲基丙烯酸甲酯_co_苯乙烯_聚硅氧烷核壳微球的制备与应用_陆馨.pdf

　62 　2 　 　　　　　　　 　　　　Vol.62　No.2 　 2011 2 　 　CIESC　Journal　 　　February　2011 (-co-)/ 陆　馨, 辛　忠, 李　春 (, , 200237) : (-co-), , , (-co-)/ 。 SEM、 TEM、 FTIR 、 、 。 , 。 (PMMA)。, PMM A , PMM A PMM A ; 2%～3% (), PMMA (2 mm)55%。 :;;;; : 634　　　　　　:A :0438-1157 (2011)02-0539-06 Preparation and application of micron-size poly (methyl methacrylate-co-styrene)/polysiloxane core/shell microspheres LU Xin, XIN Zhong, LI Chun (State K ey L aboratory of Chemical Engineering , Dep artment of Prod uct Engineering , S chool of Chemical Engineering , East China University of S cience and Technology , S hanghai 200237, China) Abst ract:Micron-size poly (methyl methacrylate-co-styrene)/polysiloxane core/shell microspheres were synthesized.Firstly, poly (methyl methacrylate-co-styrene)microspheres were prepared by dispersion copolymerization and acted as seed microspheres.Secondly, methyl trimethoxylsilane was hydrolyzed, mixed with the seed microspheres and then condensed to generate polysiloxane shells on the surface of seed 4 microspheres by adding aqueous NH H as catalyst.The morphology, core/shell structure, size and chemical structure of the core/shell microspheres were investigated by SEM, TEM, size analyzer and FTIR, respectively.The refractive indices of the relevant core/shell microspheres decreased with increasing feed amount of methyl methacrylate in the co-monomers in the seeds.The microspheres as light scattering agents were blended with polymethyl methacylate (PMMA )resin to prepare a light scattering material.The results indicated that core/shell microspheres could significantly impro