有机化白炭黑与异戊二烯共聚合的研究

甲基丙烯酰(3-三甲基硅烷)丙酯(MPS)对白炭黑进行有机化改性,得到有机化程度适当的两亲性有机化白炭黑。在高浓度乳液聚合体系中,选用氧化-还原引发剂界面引发,将聚异戊二烯分子链成功接枝在有机化白炭黑表面,制备出有机化白炭黑-聚异戊二烯的无机-有机共聚粒子。研究了有机化改性的反应条件和共聚合体系,并用傅立叶红外光谱仪、透射电子显微镜、能谱分析和热失重分析对产物进行了表征。结果表明,当MPS与白炭黑投料质量比为17∶100时,白炭黑的有机化程度适当,呈现两亲性;共聚粒子中聚异戊二烯的接枝率大约为19%。

Studies of the copolymerization of the organizic silica and isoprene

Silica was modified with a 3-(trimethoxysilyl) propylmethacrylate (MPS) coupling agent, and the appropriate degree of organic silica formation to give amphiphilic dissolution was selected. An oxidation-reduction initiator was designed to initiate emulsion polymerization at the interface between silica and isoprene, with polyisoprene chains becoming successfully grafted onto the surface of the organic silica, giving an organic silica-polyisoprene copolymer composite. The optimum conditions for the organic modification and the co-polymerization were identified. The copolymer particles were analyzed by Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), energy dispersive spectrum analysis (EDS) and thermal gravimetric analysis (TGA). The results show that when the MPS to silica ratio is 17∶100, the degree of organic silica formation is appropriate, giving an amphiphilic material, and the grafting ratio for polyisoprene in the copolymer particles is about 19%. 