综合性教学实验设计:油包油乳液稳定剂的合成及其稳定性能

Design of Comprehensive Teaching Experiment:Synthesis of Oil-in-oil Emulsion Stabilizer and Its Stability

传统油水乳液不适于水敏感体系的研究,油包油乳液的无水特性为水敏感物质和反应提供了机遇,但其稳定剂种类有限。本实验利用硫代内酯化学和点击反应的高效性和高稳定性特点合成了亲疏水性易调的聚合物,并探究了其在油包油乳液中的稳定作用。通过丙烯酰胺硫代内酯-胺一锅两步反应合成了聚(酰胺-硫醚)固体,研究了不同链长的烷基胺对聚(酰胺-硫醚)化学结构和表面亲疏水性能的影响;并设计乳液稳定性实验,探究稳定剂的亲疏水性与乳液类型的关系。本实验的开展可扩展学生对无水乳液体系及新型聚合反应的认识,加深学生对界面化学领域相关原理的理解,培养学生创新意识和综合实验能力。

Traditional oil-water emulsions are not suitable for the study of water-sensitive systems.The anhydrous nature of oil-in-oil emulsions provides opportunity for water-sensitive substances and reactions,however there are limited stabilizers.In this experiment,the polymers with adjustable amphipathicity were synthesized by the efficient and stable thiolactone chemistry and click reaction,and then used to stabilize the oil-in-oil emulsions.Poly(amide-thioether)was synthesized via a two-step acrylamide thiolactoneamine reaction in one pot.The effects of alkylamines with different chain lengths on the chemical structure and surface hydrophobicity of poly(amide-thioether)were investigated,and the relationship between the hydrophobicity of the stabilizers and the type of emulsion was also explored.This experiment can expand students’knowledge about water-free emulsion and new polymerization reactions,deepen students’understanding of relevant principles in the field of interface chemistry,and cultivate students’innovative consciousness and comprehensive experimental ability.