摘要
利用吊环法测定了双癸基甲基羟乙基氯化铵表面活性剂(DMHAC10)的cmc为0. 21 mg/m L,γcmc为27. 35 m N/m.采用座滴法研究了DMHAC10表面活性剂对铝箔、镁合金、铜箔、锌箔表面上的铺展性能。研究表明:DMHAC10表面活性剂在不同金属表面的接触角随着DMHAC10浓度的增大先急速减小后保持恒定,并且与这几种金属都表现出了有优良的铺展性能。其中对铝箔表面的铺展效果最好,60 s时,5 mg/m L的DMHAC10与铝箔的铺展系数(S)值接近于0,并对吸附机理进行了探讨。
The cmc and γcmc of didecyl methyl hydroxyethyl ammonium chloride surfactant( DMHAC10) was determined by the ring method. Its two values were 0. 21 mg/ml and 27. 35 m N/m respectively. The spreading properties of DMHAC10 surfactant on the surfaces of aluminum foil,magnesium alloy,copper foil and zinc foil were researched by sessile drop method. The results show that the contact angle of DMHAC10 surfactant on different metal surfaces decreases rapidly and then remains constant with the increasing DMHAC10 concentration,and has excellent spreading performance with these metals. Among them,the spreading effect on the surface of aluminum foil was the best. The spreading coefficient( S) value of DMHAC10 solution(5 mg/m L) and aluminum foil is close to 0 at60 s,and the adsorption mechanism was discussed.
作者
宋艳新
田文柔
陈媛媛
李俊艳
于佳欢
韩月盛
樊笑笑
智丽飞
SONG Yan-xin;TIAN Wen-rou;CHEN Yuan-yuan;LI Jun-yan;YU Jia-huan;HAN Yue-sheng;FAN Xiao-xiao;ZHI Li-fei(College of Chemistry and Biological Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)
出处
《太原科技大学学报》
2020年第1期78-82,共5页
Journal of Taiyuan University of Science and Technology
基金
太原科技大学大学生创新创业训练计划项目(XJ2018051)
太原科技大学博士启动基金(20162015)
山西省留学回国人员科技活动择优资助项目(2017066)
关键词
表面活性剂
表面张力
接触角
铺展
surfactant
surface tension
contact angle
spreading
