十二碳炔基非离子Gemini表面活性剂的制备及性能  

Preparation and Properties of Dodecacarbonyl Alkynyl Nonionic Gemini Surfactants

作　　者：李雅琪 邢攸美 马杰文 张之钧 胡斌 方伟华 尹云舰 吴振 王国杰[1] LI Yaqi;XING Youmei;MA Jiewen;ZHANG Zhijun;HU Bin;FANG Weihua;YIN Yunjian;WU Zhen;WANG Guojie(School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China;Hangzhou Greenda Electronic Materials Co.,Ltd.,Hangzhou 311228,China)

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]杭州格林达电子材料股份有限公司,杭州311228

出　　处：《高等学校化学学报》2024年第12期114-123,共10页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:22005021,51373025);北京市自然科学基金(批准号:2242044);高校新世纪优秀人才计划项目(批准号:NCET-11-0582)资助.

摘　　要：以2,5,8,11-四甲基-6-十二炔-5,8-二醇和环氧乙烷为原料,三乙胺为催化剂,合成了聚氧乙烯重复单元数分别为2,4,5和7的4种非离子Gemini表面活性剂(P1,P2,P3和P4).通过傅里叶变换红外光谱(FTIR)和1H核磁共振波谱(1H NMR)对P1~P4的结构进行了表征,利用表面张力仪和接触角测量仪等研究了不同聚氧乙烯链长度对表面张力、临界胶束浓度(cmc)、润湿性能、泡沫性能和乳化性能的影响.研究结果表明,随着聚氧乙烯链长度的增加,表面活性剂的cmc逐渐增加,cmc处的表面张力(γ_(cmc),mN/m)先减小后增大,P2的γ_(cmc)最小(27.19 mN/m).此类非离子Gemini表面活性剂均展现出优异的润湿性能,随着聚氧乙烯链长度增加,其发泡量和乳化能力逐渐增加.此类具有低表面张力和出色润湿性能的非离子Gemini表面活性剂在半导体显影和工业清洗等领域具有巨大的应用潜力.Nonionic Gemini surfactants are a new class of highly efficient surfactants with low surface tension and excellent wettability,which have great potential for application in the field of advanced wet electronic chemicals.Four nonionic Gemini surfactants with different polyoxyethylene chain lengths(n)are synthesized from 2,5,8,11-tetramethyldodec-6-yne-5,8-diol and ethylene oxide,namely P1(n=2),P2(n=4),P3(n=5)and P4(n=7).The chemical structures of the surfactants are identified by Fourier transform infrared(FTIR)and 1H nuclear magnetic resonance(NMR)spectra.The alkyl chain of the 2,5,8,11-tetramethyldodec-6-yne-5,8-diol is hydrophobic and the polyoxyethylene chain is hydrophilic,so the hydrophilic/hydrophobic ratio of the surfactant can be adjusted by adjusting the length of the polyoxyethylene chain.The effects of different polyoxyethylene chain lengths on surface tension,critical micelle concentration(cmc),wetting ability,foam performance,and emulsification capacity are investigated.With increasing the polyoxyethylene chain length,the polarity and hydrophilicity of the surfactant increases,leading to a gradual increase in the cmc.The surface tension at cmc(γ_(cmc),mN/m)decreases and then increases with increasing polyoxyethylene chain length,among which the γ_(cmc) of P2 is the lowest,27.19 mN/m,exhibiting excellent surface activity;P2 shows excellent wetting properties with the lowest contact angle of 48°on polytetrafluoroethylene(PTFE)substrate.The foaming and emulsifying properties increase with the length of the polyoxyethylene chain,and P2,P3,and P4 show excellent foaming and emulsifying properties.The excellent emulsifying properties of the surfactants are also illustrated by optical micrographs of droplet size and distribution aggregation.By investigating the effects of different polyoxyethylene chain lengths on the surface tension,cmc,wettability,foaming performance,and emulsifying property of dodecacarbonyl alkynyl nonionic Gemini surfactants,we have provided a theoretical basis for the structure-prop

关 键 词：非离子Gemini表面活性剂 聚氧乙烯链 表面张力 临界胶束浓度 润湿性 

分 类 号：O647.2[理学—物理化学]