日用化学工业（中英文）2025，Vol.55Issue(2)：162-169,8.DOI:10.3969/j.issn.2097-2806.2025.02.004
温度影响下两性氟碳表面活性剂的性能研究
Study on the effect of temperature on the performance of zwitterionic fluorocarbon surfactants
摘要
Abstract
The effects of temperature ranging from 0 to 40℃on the physicochemical properties,including surface activity,spreading behavior,and foaming performance,of three betaine-type short-chain fluorocarbon surfactants with different hydrophilic groups,namely C4F9SO2NH(CH2)3N+(CH3)2CH2COO-(C4-Ac),C4F9SO2NH(CH2)3N+(CH3)2CH2CH2SO3-(C4-sa)and C4F9SO2NH(CH2)3N+(CH3)2CH2CH2PO(OH)O-(C4-pa),were investigated.The results indicated that,the critical micelle concentration(cmc)of fluorocarbon surfactants slightly increased with temperature,while the minimum surface tension(γcmc)decreased.Among the three,the C4-sa solution showed the best surface activity with the cmc of 2.21 mmol/L and γcmc of 16.28 mN/m.The spreading coefficients of the surfactants first increased with temperature,and then began to level off at 20℃.Notably,the C4-sa exhibited the highest spreading ability,which was consistent with the trend of surface tension.The foam expansion ratio increased with temperature,but the growth became insignificant after reaching 20℃.The foam properties of the three surfactants were all poor at low temperature but were significantly improved when the temperature was slightly increased.At the same temperature,the foam expansion ratio of C4-sa was the highest among the three,which could reach 6.9 at 20℃.In conclusion,temperature did have a certain influence on the physicochemical properties of betaine-type short-chain fluorocarbon surfactants,especially at low temperature.If applied in actual low temperature environment,formulation would be needed to improve the performance.This work could provide a theoretical basis for application of this series of surfactants at different ambient temperatures.关键词
氟碳表面活性剂/表面张力/温度/发泡性能/铺展性能Key words
fluorocarbon surfactant/surface tension/temperature/foaming ability/spreading ability分类
化学化工引用本文复制引用
张宇强,贾旭宏,朱新华..温度影响下两性氟碳表面活性剂的性能研究[J].日用化学工业（中英文）,2025,55(2):162-169,8.基金项目
四川省自然科学基金面上项目(2022NSFSC0302) （2022NSFSC0302）
中国民用航空局安全能力建设项目(MHAQ2023030) （MHAQ2023030）
中国民用航空飞行学院面上项目(J2022-091) （J2022-091）
