摘要
将马来酸酐(MA)先聚合为低聚物聚马来酸酐(PMA),然后再与脂肪醇反应生成一种低聚表面活性剂。聚合反应主要受溶剂种类的影响,而酯化方法对酯化反应影响比较大,在丙酮中以三乙胺催化回流制备聚马来酸单脂肪醇酯(PMAM)的较佳工艺条件为:m(丙酮)∶m(PMA)=2.0∶1,反应时间4 h,催化剂用量1.0%(相对于PMA的质量)。PMA经脂肪醇改性、烧碱液中和后生成聚马来酸单脂肪醇酯钠盐(PMAMS)。产品用IR和GPC进行表征,测定了产品的表面活性数据cmc、γcmc以及乳化力等。
Maleic anhydride was firstly polymerized to be an oligomer, polymaleic acid （PMA）, then the latter reacted with fatty alcohol to form an oligomeric monoester surfactant. The polymerization process is mainly influenced by the solvent selected as the reaction medium for carrying - out the reaction process;while the esterification process is influenced by the reaction conditions. Through laboratory experiments,it was identified that acetone is an suitable solvent for the polymerization. The suitable conditions for the esterification process were identified as mass ratio of acetone to PMA 2. 0： 1 ,catalyst dosage 1% （refers to mass of PMA） ,reaction time 4 h. The reaction product was neutralized with sodium hydroxide solution to form a surfactant composed of sodium salt of polymaleic acid fatty alcohol monoester. The product was characterized by IR and GPC. The surface active properties,such as cmc,y and emulsifying power et al were determined.
出处
《日用化学工业》
CAS
CSCD
北大核心
2009年第1期17-21,共5页
China Surfactant Detergent & Cosmetics
基金
陕西科技大学创新团队建设项目(SUST-B15)
关键词
低聚表面活性剂
聚马来酸酐
脂肪醇
性能
oligomeric surfactant
polymaleic anhydride
fatty alcohol
property
