甲基甲酸盐的微乳液和微悬浮聚合在无表面活性剂的微乳液 (SFME) 中
Jonas Blahnik1, Sebastian Krickl1, Klaus Schmid1
1Institute of Physical and Theoretical Chemistry, University of Regensburg, 93040 Regensburg, Germany.
Journal of colloid and interface science
|June 15, 2023
概括
这项研究引入了无表面活性剂的微乳液聚合法,用于乙烯基单体. 它揭示了酒精水类物质显著影响聚合动力学和聚合物特性,提供了一种新的中间过程.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 物理化学 物理化学
背景情况:
- 传统的聚合方法通常依赖于表面活性剂或保护性合物.
- 半结构系统为聚合提供了独特的反应环境.
- 开发无表面活性剂的系统是理想的,以简化流程和减少对环境的影响.
研究的目的:
- 研究用于自由基聚合的无表面活性剂的中层结构化.
- 为了评估不同热物对聚合动学的影响.
- 描述由此产生的聚合物,包括分子质量和形态.
主要方法:
- 使用的无表面活性剂微乳液 (SFME) 由水,水 (酒精) 和单体 (甲基甲酸盐) 组成.
- 采用油溶性和水溶性启动剂进行聚合.
- 使用动态光散射 (DLS) 分析了SFME结构和聚合动力学.
- 聚合物产量,分子质量 (GPC) 和形态 (光显微镜) 的特征.
主要成果:
- 像醇和异醇这样的酒精形成了SFME,而乙醇则形成了一个分子分散系统.
- 聚合动力学和摩尔质量与酒精水利物种有显著的差异.
- 较高的酒精度通常导致较少的中位结构,较低的转换和减少的质量.
- 聚合物形态从粉状到多孔-固体和密度,这取决于系统的结构.
结论:
- 无表面活性剂的半层结构为自由基聚合提供了一个可调的环境.
- 选择的酒精水基极大地影响了聚合的结果和聚合物的特性.
- 这种方法提供了一种在溶液和微乳液/微悬浮聚合之间进行的新型中间过程.
关键词:
自由基聚合的聚合方式.中间结构化 (mesostructuring) 是一个过程.微乳液聚合物的聚合方式微悬浮聚合物的聚合方式聚合方式的聚合.美国金融金融市场管理局 (SFME)没有表面活性剂的微乳液.更多相关视频
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