Synthesis and Surface-Active Properties of Carboxymethylcellulose Esters Obtained by Microwave Assisted Transesterification of Vinyl Laurate  

作　　者：Vladimlra Tomanova Iva Srokova Vlasta Sasinkova 

机构地区：[1]Faculty of Industrial Technologies, Trend.in University of Alexander Dubdek, I. Krasku 491/30, Pfichov 020 01, Slovakia [2]Institute of Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, Bratislava 845 38, Slovakia

出　　处：《Journal of Life Sciences》2011年第1期74-80,共7页生命科学（英文版）

摘　　要：Polymeric biosurfactants were prepared by the transesterification reaction between vinyl laurate （VILA） and carboxymethylcellulose （CMC）. The reaction was performed in two different reaction media （（A） DMF/pTSA and （B） DMF/K2CO3） at various reaction conditions and using microwave radiation with controlled power as heating source. The obtained water-soluble VILA-CMC derivatives were characterized by FT-IR spectroscopy and their surface-active properties evaluated. All derivatives showed a very low esterification extent and moderate surface tension lowering effect. Nevertheless, they exhibited significant emulsifying efficiency comparable to that of the synthetic surfactant, Tween 20. The results suggested that suitable surface-active VILA-CMC derivatives can be prepared under microwave heating at low microwave power and reaction times in the range of few minutes, which represents a great advantage in comparison to transesterification reactions lasting up to 6 h at conventional heating.

关 键 词：CARBOXYMETHYLCELLULOSE TRANSESTERIFICATION microwave radiation surface-active properties. 

分 类 号：TQ423[化学工程] TQ323.41