基于异丙醇-甲苯溶剂系统的水数法研究及应用  

Study and Application of Water Titration Method Based on Isopropyl Alcohol-toluene Solvent System

作　　者：罗银倩[1] 黄训端[1] 高佳佳[1] 郑洋[1] 程飞[1] 范伟[2,3] 张部昌[1,3] 

机构地区：[1]安徽大学生命科学学院,安徽合肥230601 [2]安徽康尔美油脂有限公司,安徽六安237200 [3]安徽大学康尔美生物技术研发中心,安徽合肥230601

出　　处：《皖西学院学报》2013年第5期74-77,共4页Journal of West Anhui University

基　　金：国家级大学生创新创业训练计划项目(201210357046);安徽省科技攻关项目(12010302054);安徽大学2012年大学生创新创业训练计划项目(cxcy2012046)

摘　　要：以Span80、Tween80为标准乳化剂,考察异丙醇-甲苯溶剂系统中甲苯比例、溶剂用量、滴定速度及温度对水数测定的影响.适宜的参数条件为：异丙醇-甲苯溶剂系统添加量20.0 mL,体积比为100∶5,滴定速度12～20滴/min、温度40℃;绘制乳化剂的HLB值与水数之间的关系曲线,确定了多种乳化剂的HLB值.该系统毒害性小,可应用于Span系列、Tween系列、聚甘油酯类等多种乳化剂.Based on the standard emulsifiers of span80 and tween80, the water titration method was investigated to detect the HLB values of emulsifiers. The factors of the ratio between isopropyl alcohol （IPA） and toluene （PhMe）, solvent volume, titration time and temperature in a mixed solvent of IPA/PhMe were studied. The optimal conditions of titration were IPA to PhMe ratio of 100 ： 5, solvent volume 20.0 mL, 12~20 D/rain titration time and 40℃ temperature. A calibration curve was prepared between the water number and the HLB, and the HLB values of several emulsifiers were found from it. The mixed solvent obtained was lower toxic and inexpensive. Furthermore, the HLB value of span series, Tween series and polyglycerol ester could be detected by this system.

关 键 词：水数法 异丙醇-甲苯 HLB值 乳化剂 

分 类 号：TS202.3[轻工技术与工程—食品科学]