使用两双块共聚合物来理解双连续微乳液的剪切诱导的结构转化
Julian Fischer1, Lionel Porcar2, João T Cabral3
1Instiute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
Journal of colloid and interface science
|May 25, 2024
概括
两胞性双块共聚物增强了双连续微乳液的剪切诱导转化为层结构. 这项研究量化了这种效应,有助于预测在剪切下微乳液相位行为的行为.
科学领域:
- 材料科学 材料科学 材料科学
- 软物质物理学 软物质物理学
- 物理化学 物理化学
背景情况:
- 双连续的微乳液在剪切下表现出复杂的相位行为.
- 众所周知,两性双块共聚物可稳定微乳液并增加结构秩序.
研究的目的:
- 为了评估两性双块共聚物对双连续微乳液的剪切行为的影响.
- 为了研究在这些聚合物存在的情况下,剪切诱导的变化向叶片结构.
主要方法:
- 配合微流体与小角度中子散射 (SANS) 来研究双连续 /n-octane//PEP5-b-PEO5微乳液.
- 实现高壁切割率以诱导和观察结构转变.
- 使用2D散射模式的亚齐穆陀分析来量化异构度的程度.
主要成果:
- 两双块共聚合物显著促进剪切诱导的转变,增加异构性高达~.
- 聚合物含量通过域大小,粘度和相位图稳定性限制影响剪切反应.
- 实现了对异性质的一致描述,使得能够预测双连续到状转换.
结论:
- 两双块共聚物增强了双连续微乳液对剪切的结构反应.
- 这些发现为这些系统中剪切诱导的相变提供了一个预测模型.
- 这项研究有助于在流量条件下理解和控制微乳液结构.
关键词:
两性双块共聚物共聚物.这是一种双连续微乳液.微流体学 微流体学扩大规模的扩大规模自动组装自动组装剪切变形 剪切变形 剪切变形微角中子散射是一种小角度的中子散射.从海绵到状的过渡过程表面活性剂单层是一种表面活性剂单层.更多相关视频
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