天然油脂基两性表面活性剂α-癸基甜菜碱的表面性能  

Investigation of Surface Activity of α-Capric Betaine Zwitterionic Surfactant

作　　者：齐丽云 方云 王泽云[2,3] 钟明伟 马娜 

机构地区：[1]江南大学化学与材料工程学院,江苏无锡214122 [2]大连理工大学精细化工国家重点实验室,辽宁大连116022 [3]南风化工集团股份有限公司,山西运城044000

出　　处：《江南大学学报（自然科学版）》2008年第6期725-729,共5页Joural of Jiangnan University (Natural Science Edition)　

基　　金："十一五"国家科技支撑计划重点项目(2007BAE52B01)

摘　　要：采用滴体积法和稳态荧光法分别测定了α-癸基甜菜碱两性表面活性剂的表面活性及胶束聚集数,并考察了pH值对其表面活性的影响.实验结果表明,α-癸基甜菜碱具有较低的表面张力和临界胶束浓度,且以两性离子形式存在时比阳离子形式存在时的表面活性明显增强.对α-癸基甜菜碱水溶液泡沫力、润湿力和钙皂分散力等应用性能的测定结果表明,α-癸基甜菜碱具有中等润湿力、优良的起泡性能、稳泡能力和抗硬水能力,具有用于高效钙皂分散剂的潜能.The surface tension of zwitterionic surfactant α-capric betaine （α-CB） and the aggregation number of its micelles have been investigated by means of drop volume method and steady-state fluorescence technology respectively. The effect of the solution pH on the surface tension and the critical micelle concentration （CMC） has also been studied. The experimental results showed that α-CB exhibits excellent surface properties. And when the pH of α-CB solution approaches to pI （ isoelectric point）, the system presents the lower surface tension and cmc than other forms. Some applied performance of α-CB are examined and the experimental results suggest that α-CB exhibits good foaming performance, excellent lime soap dispersing ability and hard water-resistance capability. This study indicates that α-CB is a candidate for the efficient lime soap dispersant.

关 键 词：天然油脂 两性表面活性剂 α-癸基甜菜碱 表面性能 

分 类 号：O69[理学—化学]