脂肪醇聚氧乙烯醚型阳离子聚氨酯表面活性剂的制备与性能

Preparation and Properties of Aliphatic Alcohol Ether Cation Polyurethane Surfactants

摘要:

以异氟尔酮二异氰酸酯（IPDI）、N-甲基二乙醇胺（MDEA）、不同长链脂肪醇聚氧乙烯醚（AEO-2、AEO-5、AEO-9、O-2、O-5、O-10）为主要原料，合成了一系列醇醚封端阳离子型聚氨酯高分子表面活性剂（PUS），并对产物进行了红外分析，研究醇醚结构中烷基链长、环氧乙烷加合数、外加电解质对表面张力和临界胶束浓度的影响。实验结果表明：当脂肪醇聚氧乙烯醚为O-5时，其综合性能优异，溶液的临界胶束浓度为37.934 mg/L，水溶液的表面张力最低可达34.142 mN/m。

Abstract:

A series of cation polyurethane surfactants blocked by aliphatic alcohol ether were synthesized by the polymerization reaction between 3-isocyanatomethyl-3,5,5-trimethyisocyana- te (IPDI) ?N - methyl diethanolamine (MDEA) and aliphatic alcohol ether with different long chain alkyls（AEO-2、AEO-5、AEO-9、O-2、O-5、O-10）. Their chemical structure were characterized and confirmed by FT-IR analysis. The effects of the carbon number in alcohol ether ?altyl phenol polyoxyethylene as well as additional elect rolyte on the surface tension and critical micelle concentration were researched. The results showed that when the aliphatic alcohol ather is O-5,the surfactant has excellent燾omprehensive performance, and its critical micelle concentration is 0.0379g/L with the surface tension of 34.142mN/m.