在混合溶剂中从废食用油中提取的zwitterionic sultaine和甲基之间的相互作用:溶剂效应
Ying Peng1, Zhao Hua Ren1, Yu Bai1
1College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, China; Hubei Engineering Research Centers for Clean Production and Pollution Control of Oil and Gas Fields, Jingzhou 434023, China.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
|November 5, 2025
概括
在不同溶剂中研究甲基 (MO) 和脂肪胺胺酸 (FSB) 的相互作用,揭示了溶剂组成如何影响着染料与表面活性剂的结合. 添加甘油可以增强自发的关联过程.
科学领域:
- 物理化学 物理化学
- 合体和表面化学
- 频谱学是一种光谱学.
背景情况:
- 了解染料-表面活性剂相互作用对于各种领域的应用至关重要.
- 废食用油可以用来合成功能性表面活性剂,如脂肪胺酸氧硫贝 (FSB).
- 溶剂效应显著影响分子相互作用和聚合现象.
研究的目的:
- 为了研究甲基 (MO) 和水,水-甘油和水-甘油溶液中的一个zwitterionic表面活性剂 (FSB) 之间的相互作用行为.
- 阐明溶剂组成和表面活性剂度对MO-FSB相互作用的作用.
- 量化关联常数和分区系数,以了解相互作用的自发性.
主要方法:
- 紫外线光谱法用于监测在FSB的存在下MO的光谱变化.
- 实验是在恒定温度 (298.15 K) 进行的.
- 分析包括评估不同FSB度和溶剂成分的峰值强度和最大吸收波长 (λmax) 的变化.
主要成果:
- MO的吸收光谱呈现出高峰强度和λmax的明显变化,这取决于溶剂成分和FSB度.
- 在稀释的FSB溶液中,MO峰值强度下降,λmax转移到更短的波长.
- 在微粒溶液中,MO峰值强度增加,和λmax显示红移随着FSB度的增加,表明度依赖的相互作用.
结论:
- 混合溶剂的性质 (水-甘油或水-甘油) 影响MO和FSB之间的静电和疏水相互作用.
- 发现添加甘油可以促进自发的结合或分离过程,如热力学参数所示.
- 这些发现提供了对染料-表面活性剂相互作用和溶剂效应的见解,这与染料应用有关.
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