| KINETICS OF SUSPENDED EMULSION POLYMERIZATION OF METHYL METHACRYLATE |
| |
| 引用本文： | 包永忠. KINETICS OF SUSPENDED EMULSION POLYMERIZATION OF METHYL METHACRYLATE[J]. 高分子科学, 2004, 0(6): 543-548 |
| |
| 作者姓名： | 包永忠 |
| |
| 作者单位： | Department of |
| |
| 摘 要： | The kinetics of suspended emulsion polymerization of methyl methacrylate (MMA), in which water acted as the dispersed phase and the mixture of MMA and cyclohexane as the continuous phase, was investigated. It showed that the initial polymerization rate (Rp0) and steady-state polymerization rate (Rp) were proportional to the mass ratio between water and oil phase, and increased as the polymerization temperature, the potassium persulphate concentration ([I]) and the Tween20 emulsifier concentration ([S]) increased. The relationships between the polymerization rate and [I] and [S] were obtained as follows: Rp0 ∝ [I]0.73[S]0.32 and Rp ∝ [I]0.71[S]0.23. The above exponents were close to those obtained from normal MMA emulsion polymerization. It also showed that the average molecular weight of the resulting poly(methyl methacrylate) decreased as the polymerization temperature, [I] and [S] increased. Thus, MMA suspended emulsion polymerization could be considered as a combination of many miniature emulsion polymerizations proceeding in water drops and obeyed the classical kinetics of MMA emulsion polymerization.
|
| 收稿时间： | 2003-07-31 |
| 修稿时间： | 2003-11-06 |
KINETICS OF SUSPENDED EMULSION POLYMERIZATION OF METHYL METHACRYLATE |
| |
| Yong-zhong Bao,Cheng-xi Wang,Zhi-ming Huang and Zhi-xue Weng. KINETICS OF SUSPENDED EMULSION POLYMERIZATION OF METHYL METHACRYLATE[J]. Chinese Journal of Polymer Science, 2004, 0(6): 543-548 |
| |
| Authors: | Yong-zhong Bao Cheng-xi Wang Zhi-ming Huang Zhi-xue Weng |
| |
| Affiliation: | Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China |
| |
| Abstract: | The kinetics of suspended emulsion polymerization of methyl methacrylate (MMA), in which water acted as the dispersed phase and the mixture of MMA and cyclohexane as the continuous phase, was investigated. It showed that the initial polymerization rate (Rp0) and steady-state polymerization rate (Rp) were proportional to the mass ratio between water and oil phase, and increased as the polymerization temperature, the potassium persulphate concentration ([I]) and the Tween20 emulsifier concentration ([S]) increased. The relationships between the polymerization rate and [I] and [S] were obtained as follows: Rp0 ∝ [I]0.73[S]0.32 and Rp ∝ [I]0.71[S]0.23. The above exponents were close to those obtained from normal MMA emulsion polymerization. It also showed that the average molecular weight of the resulting poly(methyl methacrylate) decreased as the polymerization temperature, [I] and [S] increased. Thus, MMA suspended emulsion polymerization could be considered as a combination of many miniature emulsion polymerizations proceeding in water drops and obeyed the classical kinetics of MMA emulsion polymerization. |
| |
| Keywords: | Suspended emulsion polymerization Methyl methacrylate Polymerization rate Average molecular weight and molecular weight distribution |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《高分子科学》浏览原始摘要信息 |
|
点击此处可从《高分子科学》下载全文 |
|
