| 以羧基改性聚乙烯醇为乳化剂的醋酸乙烯乳液聚合及聚合物的乳液性能研究 |
| |
| 引用本文： | 陈领花,王长法,李允明.以羧基改性聚乙烯醇为乳化剂的醋酸乙烯乳液聚合及聚合物的乳液性能研究[J].化学反应工程与工艺,1992(3). |
| |
| 作者姓名： | 陈领花 王长法 李允明 |
| |
| 作者单位： | 浙江大学化工系 杭州310027 |
| |
| 摘 要： | 以羧基改性的聚乙烯醇高分子表面活性剂(m-PVA)为乳化剂,进行醋酸乙烯(VAC)乳液聚合,研究了 m-PVA 的用量和醇解度,引发剂的用量和加入方式对聚合速率的影响。同时还研究了乳液的流变特性和稳定性,并与以常用 PVA1788和1799为乳化剂的乳液性能进行了比较。发现,以 m-PVA 为 VAC 乳液聚合的乳化剂,可制得高粘度低固含量、触变性和稳定性良好的聚醋酸乙烯(PVAC)乳液。
|
| 关 键 词： | 改性聚乙烯醇 醋酸乙烯乳液聚合 流变特性 |
STUDY ON VAC EMULSION POLYMERIZATION WITHCOOH MODIFIED PVA AS EMULSIFIER AND THE PROPERTIES OF POLYMER EMULSION |
| |
| Chen Linghua Wang Changfa Li Yunming.STUDY ON VAC EMULSION POLYMERIZATION WITHCOOH MODIFIED PVA AS EMULSIFIER AND THE PROPERTIES OF POLYMER EMULSION[J].Chemical Reaction Engineering and Technology,1992(3). |
| |
| Authors: | Chen Linghua Wang Changfa Li Yunming |
| |
| Abstract: | In this paper,VAC emulsion polymerization with polymer surfactants of modified poly(vinyl alcohol)as emulsifier was carried out.The effects of factors including m-PVA content and degree of alcoholysis,catalyst content and the way of its addition were investizated.Rheological behaviours and the stability of emulsion were also studied.The properties of emulsion with m-PVA as emulsifier has compared with that of the emulsion with ordinary PVA 1788,1799 as the emulsifier.It was found, (1)The viscosity of emulsion is higher and the mean particle size is smaller. (2)The viscosity of emulsion changes with temperature in lesser extent and the freeing and low temperature stabililies are better. (3)The structural Index(B)of viscosity is larger,The properties of rheopexy and flow in brush smearing are better. |
| |
| Keywords: | Modified poly(vinyl alcohol) VAC emulsion polymerization Rheological behaviours |
| 本文献已被 CNKI 等数据库收录！ |
