从含有长和基尾的双头表面活性剂形成的热加厚粘弹性溶液
Yu Zang1, Xiaomei Pei1, Zhao Chen1
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
|February 6, 2026
概括
一种新型的阴离子表面活性剂,C22-β-Ala-DQA,与棕酸一起形成稳定,粘弹性虫状. 该系统表现出独特的热加厚行为和高粘度,显示出智能流体应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 合体和表面化学
背景情况:
- 传统的表面活性剂在形成稳定的粘弹性溶液方面往往存在局限性.
- 设计具有独特结构的表面活性剂是实现所需的质性质的关键.
研究的目的:
- 为了合成和表征一种新的阴阳性表面活性剂,C22-β-Ala-DQA.
- 为了研究C22-β-Ala-DQA/棕酸盐系统中类似虫的微粒的形成和特性.
- 探索这些系统在智能流体中的潜在应用.
主要方法:
- 合成N1,N1,N1,N3,N3-pentamethyl-N3-(3-(3-docosanamidopropanamido) ) -1,3-二二化物 (C22-β-Ala-DQA) 的方法.
- 测量C22-β-Ala-DQA和棕酸混合物的风病学性质.
- 低温传导电子显微镜 (Cryo-TEM) 用于微粒结构分析.
- 在不同温度和度下测量粘度.
主要成果:
- C22-β-Ala-DQA具有低克拉夫特温度和高溶解度.
- 形成了透明的粘弹性溶液,具有超长的虫状 (直径约7纳米).
- 在30-80°C之间观察到显著的热加厚行为,零剪切粘度在80°C时达到632.5Pa·s.
- 头组的高温脱水促进了小胞体的延长.
结论:
- 在C22-β-Ala-DQA:SP系统中,形成稳定的类似虫的微粒,具有特殊的粘性弹性和热加厚特性.
- C22-β-Ala-DQA的独特结构,具有长的和尾巴和双头组,对于这些特性至关重要.
- 该系统对破裂流体和其他智能流体技术等领域的应用具有前景.
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