CN201210135384
CN102675564A
微信扫码查看/分享专利
|
摘要:本发明公开了一种在硅胶微粒表面高效接枝聚合甲基丙烯酸缩水甘油酯的方法,涉及在硅胶微粒表面高效接枝PGMA的接枝聚合方法。包括以下步骤:将活化硅胶用γ-巯丙基三甲氧基硅烷进行表面改性,制得表面含巯基的改性硅胶微粒MPMS-SiO2;然后将MPMS-SiO2、N,N-二甲基甲酰胺和甲基丙烯酸缩水甘油酯混合,加入引发剂BPO,恒温并在搅拌条件下进行接枝聚合反应,即得到接枝微粒PGMA/SiO2。本发明利用巯基-BPO体系引发的接枝聚合,由于活性位点位于载体表面,故具有高的接枝度,实现了油溶性单体GMA在硅胶表面的高效接枝聚合。
|
Abstract: The invention discloses a method for efficient graft polymerization of glycidyl methacrylate on the surface of a silica gel particle and relates to a graft polymerization method for efficient grafting PGMA on the surface of the silica gel particle. The method includes the following steps of conducting surface modification on active silica gel through gamma-mercaptopropyltrimethoxysilane so as to obtain a modified silica gel particle MPMS-SiO2 with the surface containing sulfhydryl; then mixing MPMS-SiO2, N, N-dimethylformamide and glycidyl methacrylate, adding initiator benzoyl peroxide (BPO) and conducting a graft polymerization reaction under the conditions of constant temperature and stirring so as to obtain a grafting particle PGMA/SiO2. The method utilizes graft polymerization initiated by a sulfhydryl-BPO system, due to the fact that an active site is arranged on the surface of a carrier, high graft degree is achieved, and efficient graft polymerization of oil soluble monomer glycidyl methacrylate (GMA) on the surface of the silica gel.
|
申请人: 中北大学
|
Applicant: UNIV NORTH CHINA
|
地址: 030051 山西省太原市学院路********(隐藏)
|
发明(设计)人: 高保娇 安富强 杜瑞奎 李延斌 王蕊欣 施雪军
|
Inventor: BAOJIAO GAO; FUQIANG AN; RUIKUI DU; YANBIN LI; RUIXIN WANG; XUEJUN SHI
|
主分类号: C08F292/00(2006.01)I
|
分类号: C08F292/00(2006.01)I C08F220/32(2006.01)I C08F4/40(2006.01)I
|
|