皮克林乳液和粘弹性溶液由基CO2-响应性表面活性剂构成
Hanwen Wang1,2, Hangyuan Zhang2, Qian Wu1,2
1Academy of Advanced Carbon Conversion Technology, Huaqiao University, Xiamen 361021, Fujian, China.
Langmuir : the ACS journal of surfaces and colloids
|October 19, 2023
概括
一种基于的新型表面活性剂,C16MPAN,可以产生可逆的CO2响应粘弹性溶液和稳定的皮克林乳液. 这种生物质衍生材料为智能响应材料提供可调节的特性.
科学领域:
- 材料科学 材料科学 材料科学
- 合体和表面化学
- 生物质利用生物质的利用
背景情况:
- 设计具有可调节性质的响应性材料对于先进的应用至关重要.
- 开发可持续和可转换二氧化碳的系统仍然是材料科学中的一个重大挑战.
研究的目的:
- 为了合成一种新的脂基表面活性剂 (C16MPAN) 用于对二氧化碳有反应的粘弹性溶液和皮克林乳液.
- 研究这些系统的二氧化碳触发的形成,特性和可逆性.
- 探索C16MPAN与纤维素纳米晶体 (CNC) 的协同作用,以获得稳定和可切换的皮克林乳液.
主要方法:
- 合成的N-乙-maleimidepimaric酸N,N-二甲基二胺 (C16MPAN) 表面活性剂.
- 使用风学,动态光散射 (DLS) 和低温透射电子显微镜 (Cryo-TEM) 进行对CO2响应的粘弹性溶液的表征.
- 使用C16MPAN和纤维素纳米晶体 (CNCs) 制备和稳定性评估皮克林乳液,通过吸附异温体,滴滴大小,接触角度和宏观成像进行分析.
主要成果:
- 合成的C16MPAN表面活性剂在水中表现出极好的CO2反应性行为,形成粘弹性溶液.
- 在二氧化碳泡时,观察到剪切粘度显著增加 (3-4级),这归因于管状虫状菌体的形成.
- C16MPAN和CNCs协同形成稳定的皮克林乳液 (持续超过三个月),表面活性剂脱落引发可逆破裂,在多个循环中保持一致的颗粒大小分布.
结论:
- 一种新的,生物质衍生的,对二氧化碳有反应的表面活性剂 (C16MPAN) 已成功合成.
- 开发的系统可以实现可调节的粘弹性和稳定,可切换的皮克林乳液,展示可逆的CO2触发性能.
- 这项研究扩大了生物质资源在智能响应材料领域的应用.
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