松香聚乙二醇柠檬酸酯表面活性剂的合成及性能研究

Study on the Synthesis and Property of the Surfactant Rosin-Polyethylene Glycol-Citric Acid Ester

以松香为主要原料 ,与聚乙二醇、柠檬酸反应 ,合成一种新型表面活性剂。探讨了该表面活性剂的表面张力 (νc Mc) ,临界胶束浓度 ( Cc Mc) ,泡沫性 ,乳化性 ,润湿性等。结果为 :νc Mc35 .2× 1 0 -3 N/m;Cc Mc0 .5 62 3mol/L,HLB值 1 1 .6,泡沫力 (高度 1 73mm) ,乳化力 ( v H2 O5 5 .8m L) ,润湿性 1 0 5 s。

Rosin can react with polyethylene glycol and citric acid to form a new type of surfactant. This surface tension. CMC, spumescence. emulsibility and wettability were studied. The results are as follows: surface tension (35.2×10 -3 N/m). C cMc ( 0.5623 mol/L). HLB Value(11.6). foam force(height 173 mm), emulsifying force ( v H20 55.8 mL), wettability (105s). These show that it is a good nonionic surfactant.