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Synthesis, Surface Activity, and Antifogging Property of Triethanolamine Monolaurate Ester
Meng-jun Cai,Qing-qing Li,Xue-mei Chen*
Author NameAffiliationE-mail
Meng-jun Cai National Engineering Research Centre of Ultrafine Powder, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China  
Qing-qing Li National Engineering Research Centre of Ultrafine Powder, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China  
Xue-mei Chen* National Engineering Research Centre of Ultrafine Powder, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China xmchen@ecust.edu.cn 
Abstract:
Triethanolamine monolaurate ester was synthesized by lauric acid and triethanolamine (TEA) with a molar ratio around 1:1 and the esterification process was investigated and optimized. The esterification product of lauric acid with TEA was characterized by infrared spectra and nuclear magnetic resonance. The surface tension (γCMC) at the critical micelle concentration (CMC) was determined, and the antifogging properties of triethanolamine laurate ester on low-density polyethylene (LDPE) films were also measured. The results indicated that the yield of triethanolamine monolaurate ester was more than 69% under optimized esterification condition, the CMC value and γCMC of esterification product was 0.91 μg/mL and 22.1 mN/m in aqueous solution at 25 oC, respectively. The first-drop time and ten-drop time was 257 and 86 s, respectively, and the antifogging duration of triethanolamine laurate ester on the surface of LDPE film at 60 oC was more than 150 h.
Key words:  Triethanolamine  Laurate  Surfactant  Antifogging property
FundProject:
三乙醇胺月桂酸单酯的合成、表面活性及防雾性能
蔡梦军,李青青,陈雪梅*
摘要:
用等摩尔比的月桂酸和三乙醇胺为原材料合成了三乙醇胺月桂酸单酯,并对其酯化过程进行了优化,利用红外和核磁共振氢谱对其酯化产物进行了分析和表征.结果表明,三乙醇胺月桂酸单酯的产率高达69%,其在水溶液中的临界胶束浓度及表面张力分别为0.91 μg/mL和22.1 mN/m,其在低密度聚乙烯薄膜上的第一滴流滴时间和十滴流滴时间分别为257和86 s,高温持续期超150 h.
关键词:  三乙醇胺  月桂酸酯  表面活性剂  防雾性能
DOI:10.1063/1674-0068/28/cjcp1412208
分类号: