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关于离子非双子表面活性剂的合成,表面活动和自组装行为的研究
Zhiqiang Man1,2, Wenxiang Wu1
1Key Laboratory of Enhanced Oil Recovery, Northeast Petroleum University, Ministry of Education, Daqing 163318, China.
Molecules (Basel, Switzerland)
|April 27, 2024
概括
合成了新的离子非离子双子表面活性剂 (CnEO-5),具有增强的盐和温度耐受性. 这些表面活性剂具有很高的表面活性,并且在改善石油回收方面具有有前途的应用.
科学领域:
- 表面活性剂化学 表面活性剂化学
- 材料科学 材料科学 材料科学
- 石油工程是石油工程中的一个.
背景情况:
- 无离子非离子表面活性剂对于增强石油回收至关重要,因为它们具有盐和温度耐受性.
- 关于将乙烯氧化物 (EO) 引入这些表面活性剂的疏水链及其自组合的研究有限.
- 需要对此类改性表面活性剂的自我组装行为进行系统研究.
研究的目的:
- 通过将EO纳入疏水性基链,合成一系列新的离子非离子双子表面活性剂 (CnEO-5).
- 系统地研究合成的CnEO-5表面活性剂的表面活性,热力学特性和自我组装行为.
- 评估CnEO-5表面活性剂在改善原油回收方面的潜力.
主要方法:
- 合成CnEO-5表面活性剂使用3-aminopropane硫酸,脂肪酒精聚氧乙烯和.
- 通过测量表面张力来表征表面活动.
- 使用导电性,光探针,DLS,TEM和分子动力学模拟来分析热力学特性,化和自我组装.
主要成果:
- CnEO-5表面活性剂表现出高表面活性,超过传统的单链和结构相似的双子表面活性剂.
- 发现CnEO-5的化是外热和自发的,由热力学参数表明.
- 表面活性剂的结构影响了自我组装:较短的链 (C8EO-5) 形成了较大的囊泡,而较长的链 (C12EO-5,C16EO-5) 形成了较小的囊.
结论:
- 合成的CnEO-5表面活性剂表现出卓越的表面活性和有利于化的热力学特性.
- 自组装行为可以根据疏水性链条的长度进行调整,形成囊泡或囊.
- CnEO-5表面活性剂显示出在增强的石油回收过程中应用的巨大潜力.
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