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Photopolymerization of Methyl Methacrylate with p-X-$C_{6}H_{4}SiH_{3}$ (X = F, $CH_3$, $OCH_3$)
우희권,김보혜,조명식,김대영,최영섭,곽영채,함희석,김동표,황택성,U, Hui Gwon,Kim, Bo Hye,Jo, Myeong Sik,Kim, Dae Yeong,Choe, Yeong Seop,Gwak, Yeong Chae,Ham, Hui Seok,Kim, Dong Pyo,Hwang, Taek Seong Korean Chemical Society 2001 Bulletin of the Korean Chemical Society Vol.22 No.12
The bulk photopolymerization of methyl methacrylate (MMA) with para-substituted phenylsilanes such as F-C6H4SiH3 (1), H3C-C6H4SiH3 (2), and H3CO-C6H4SiH3 (3) was performed to produce poly(MMA)s containing the respective silyl moiety as an end group. For all the hydrosilanes, the polymerization yields and the polymer molecular weights decreased, whereas the TGA residue yields and the relative intensities of Si-H IR stretching bands increased as the relative silane concentration over MMA increased. The polymerization yields and polymer molecular weights of MMA with 1-3 increased in the order of 3 < 1 < 2. These hydrosilanes influence significantly upon the photopolymerization of MMA as both chain-initiation and chain-transfer agents.
김용호(Yong Oh Kim),이광원(Kwang Won Lee),곽영채(Young Chae Kwak) 한국고무학회 2000 엘라스토머 및 콤포지트 Vol.35 No.1
N/A With growing concerns of environment and due to strengthening the government regulations on volatile organic compounds(VOC) the coatings industries are developing new technologies to reduce the amount of VOC released from coatings. In this study, a water soluble curing agent of amine-epoxy adduct was synthesized and its structure was identified by FT-IR, GPC and TG/DTA. The mechanical properties of the new curing agent in combination of KER-828 and KER-500 were investigated respectively. As an experimental result, the drying time of KER-828 was faster than that of KER-500 but the adhesion and impact strength of KER-500 was better than that of KER-828.