• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Droplet Size and Morphology for the Aqueous Two-Phase Polymerization of Acrylamide in an Aqueous Poly(ethylene glycol) Solution
【24h】

Droplet Size and Morphology for the Aqueous Two-Phase Polymerization of Acrylamide in an Aqueous Poly(ethylene glycol) Solution

机译：聚乙二醇水溶液中丙烯酰胺水两相聚合的液滴尺寸和形态

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A kind of polyacrylamide (PAM) latex product dispersed in an aqueous solution was successfully prepared through the aqueous two-phase polymerization of acrylamide in an aqueous solution of poly(ethylene glycol) (PEG). The effects of various polymerization parameters on the size and morphology of droplets rich in PAM. were systematically investigated. The droplet size and morphology was significantly influenced by the polymerization rate. The high polymerization rate caused the formation of stripe-shaped droplets because of the aggregation of more droplets rapidly separated from the continuous phase. At the same time, the monomer partition behavior mainly relied on the temperature, and the PEG concentration also dramatically affected the droplet size and morphology. The increase in PEG concentration not only changed the monomer partition behavior and restrained droplet aggregation but also shortened the critical PAM radical chain length and accelerated the droplet formation. Furthermore, the stirring speed was also recognized as the correlative factor that affected the droplet stability and monomer diffusion rate from the continuous phase into the droplets. The addition of salt and alcohol altered the droplet stability and the final droplet size and morphology.
机译：通过在聚乙二醇（PEG）水溶液中进行丙烯酰胺的水两相聚合，成功制备了一种分散在水溶液中的聚丙烯酰胺（PAM）胶乳产品。各种聚合参数对富含PAM的液滴尺寸和形态的影响。被系统地调查。液滴的大小和形态受聚合速率的影响很大。高聚合速率导致条状液滴的形成，因为更多的液滴从连续相中迅速分离而聚集在一起。同时，单体的分配行为主要取决于温度，PEG的浓度也极大地影响了液滴的大小和形态。 PEG浓度的增加不仅改变了单体分配行为，抑制了液滴的聚集，而且缩短了临界PAM自由基链的长度，并加速了液滴的形成。此外，搅拌速度也被认为是影响液滴稳定性和单体从连续相进入液滴的扩散速率的相关因素。盐和酒精的添加改变了液滴的稳定性以及最终的液滴尺寸和形态。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号