The Behaviour of Unsaturated Acids in Emulsion Copolymerization
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概要
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The influence of the distribution ratio of unsaturated acids between methyl methacrylate (MMA) phase and water phase on the copolymerization of MMA-unsaturated acids and on various properties of the obtained emulsion particle has been investigated. Acrylic acid (AA) had the lower value of distribution ratio (70°C, 1.41), which indicated that AA was hard to diffuse into the particle and consequently polymerized easily in water phase. The emulsion particle of AA-MMA copolymer had the greater surface charges than that of MAA-MMA copolymer at pH≈7, and was swollen well by water. Otherwise, methacrylic acid (MAA) had the higher value of distribution ratio (70°C, 6.13) than that of AA. This result indicated that MAA diffused easily to the particle and copolymerized well with MMA. Accordingly the emulsion particle of MAA-MMA copolymer was found to have the lower surface charges than that of AA-MMA copolymer.
- 公益社団法人 高分子学会の論文
公益社団法人 高分子学会 | 論文
- 情報の入口--高分子センサ-とトランスデュ-サ- (情報化社会と高分子)
- 高分子科学最近の進歩--メルトレオロジ-(伸長粘度)
- 高分子系の相分離--特にポリマ-ブレンドについて
- 導電性高分子の磁気緩和--NMRT-1〓1の周波数依存性
- 多機能性高分子の合成 (化学修飾による多機能性高分子)