一种阴离子表面活性剂的研制  

Study on Synthesis,Characterization and Physical Properties of an Anionic Surfactant

作　　者：王岩[1] 赵田红[1] 

机构地区：[1]西南石油大学化学化工学院,成都610500

出　　处：《重庆科技学院学报（自然科学版）》2013年第5期90-92,共3页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：四川省重点学科建设项目(SZD0413)

摘　　要：十八烷基硫酸钠这种表面活性剂是由无毒的正十八醇合成,用氯磺酸作为硫酸化剂。合成的表面活性剂通过熔点,红外光谱,核磁共振进行表征。对表面活性剂的物理特性,如krafft点、表面张力、电导率及扫描电镜进行研究。在30℃时,表面张力和临界胶束浓度分别为48 mNm和0.2 mmolL。临界胶束浓度和表面张力都会随着温度的升高而降低。当温度从30℃升高到50℃时,临界胶束浓度从0.2 mmolL降到0.1 mmolL。krafft点是56℃,熔点是209℃。Sodium octadecyl sulfate such surfactants are synthesized from non-toxic-octadecyl alcohol,with chlorosulfonic acid as the sulfating agent.The synthesized surfactant is characterized by melting point,infrared,H-NMR spectrum studies.The physical characteristics of the surfactant,such as the Krafft point,surface tension,conductivity,and scanning electron microscope are also researched.At 30℃,the surface tension and the critical micelle concentration of the surfactant is 48mN/m and 0.2mmol/L respectively.Both the critical micelle concentration and surface tension will be reduced as the temperature increases.When the temperature increases from 30℃ to 50℃,the critical micelle concentration dropps from 0.2mmol/L to 0.1mmol/L.The krafft point is 56℃,the melting point is 209℃.

关 键 词：阴离子表面活性剂 临界胶束浓度 表面张力 krafft点 

分 类 号：TQ423.11[化学工程]