• 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 >Synthesis of polymeric emulsifiers based on ketoaldehyde resin and their application in emulsifying styrene/water two-phase system
【24h】

Synthesis of polymeric emulsifiers based on ketoaldehyde resin and their application in emulsifying styrene/water two-phase system

机译：Synthesis of polymeric emulsifiers based on ketoaldehyde resin and their application in emulsifying styrene/water two-phase system

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

摘要

Though the stabilization effect of polymeric emulsifiers onto emulsions is worse than that of small molecular emulsifiers, the application of polymeric emulsifiers can avoid small molecule residues in polymer products. Herein, a series of polymeric emulsifiers (M-CFR-x-K [Na]/M-MeCFR-x-K) are synthesized based on cyclohexanone formaldehyde resin (CFR)/methylcyclohexanone formaldehyde resin (MeCFR), which are firstly modified by maleic anhydride and then neutralized by bases. The effect of different counter ions, terminal groups and chain lengths on emulsion (styrene/water) property is studied by monitoring the stability and droplet size distribution of the emulsions. The results indicate that the emulsifier with KOH as neutralizer has better emulsifying performance than that with NaOH. Besides, the emulsion prepared by M-MeCFR-1.20-K, which has a hydrophilic group just at one end is more stable than that of M-CFR-2.25-K, which both ends are hydrophilic groups. The chain length of polymeric emulsifiers affects the stability of emulsions. And when the acid value is 1.91 mmol/g, the modified resin (M-CFR-2.25-K) has the best emulsifying performance. Furthermore, M-CFR-2.25-K (acid value:1.91 mmol/g) is used for emulsion polymerization. And after the reaction, polystyrene particulates can be directly obtained by precipitation without special demulsification procedure.

著录项

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