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类似虫的状糖溶液由一个双尾表面活性剂形成,其中有两个四角头组

Zhengrong Lin¹, Zutian Bi¹, Hongye Li¹

¹The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China.

Langmuir : the ACS journal of surfaces and colloids

|September 10, 2024

概括

一种新型的表面活性剂,Di-C14-N2,在甘油中形成高度粘性虫状,创造出已知最粘性甘油系统. 这种环保的解决方案大大减少了摩擦和磨损,提供了作为优质滑剂的潜力.

科学领域:

材料科学材料科学材料科学
合体和表面化学
部落学 (tribology) 是一个学科.

背景情况:

在非水性极地介质中表面活性剂的自我组装是不太了解的.
在纯糖醇系统中观察聚合物结构一直是具有挑战性的.

研究的目的:

为了合成和表征一种新的四级表面活性剂 (Di-C14-N2).
为了研究Di-C14-N2在纯糖醇中的自我组装行为和质性质.
评估Di-C14-N2甘油溶液作为潜在的环保滑剂的三元学性能.

主要方法:

Di-C14-N2表面活性剂的合成.
低温传导电子显微镜 (cryo-TEM) 用于集成结构可视化.
稳定状态剪切和振荡性学测量.
使用磨损测试仪,白光干扰仪和扫描电子显微镜进行 Tribological 测试.

主要成果:

在糖醇中,Di-C14-N2形成了长长的类似虫的微粒.
糖醇系统在90mM时实现了创纪录的零剪切粘度1013Pa·s.
与水性系统相比,Di-C14-N2糖醇溶液表现出独特的风湿学特性.
与纯糖醇相比,摩擦系数降低了23%,磨损率降低了83%.

结论:

在纯糖醇中直接观察表面活性剂聚合物是可行的.
在糖醇中Di-C14-N2的自我组装导致显著增强的粘度和粘性弹性.
迪-C14-N2甘溶液显示出作为环保滑剂的优秀潜力,具有改进的三角学特性.

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