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O / W / O 형 Emulsion 액체막에 의한 Toluene 과 n-Heptane 혼합물의 분리 ( 제1보 )
주명종,김태영,남기대 ( Myung Jong Ju,Tae Young Kim,Ki Dae Nam ) 한국유화학회 1996 한국응용과학기술학회지 Vol.13 No.3
In the separation of toluene/n-heptane mixture by the emulsion type liquid membrane in an batch system, the effect of surfactant on the separation factor and membrane stability was studied over the surfactant concentration ranging form 0.1 to 1.wt% at the contact time of 5 and 10 minutes. and the settling time of 5 and 10 minutes. The surfactant used was sodium lauryl sulfate. The separation factor reached its maximum value at the surfactant concentration of 0.5wt% for surfantant. It was found that the percentage of membrane breakup reached its minimum values and the separation factor showed its maximum value at the surfactant concentration of 0.5wt%. which confirmed that efficient separation could be effect when emulsion liquid membrane was stable because of low membrane breakup.
液體膜에 의한 Toluene과 n-Heptane 混合物의 分離에 있어서 界面活性劑의 影響
주명종,정태수 成均館大學校 科學技術硏究所 1992 論文集 Vol.43 No.2
In the separation of toluene-n-heptane mixture by the emulsion-type liquid membrane in a batch system, the effect of surfactants on the separation factor and membrane stability was studied over the surfactant concentration ranging from 0.1 to 1.5wt% at the contact time of 5 and 10 minutes and the settling time of 5 and 10 minutes. The surfactants used were sodium lauryl sulfate, sodium laurylether sulfate and triethanolamine lauryl sulfate. The separation factor reached its maximum value at the surfactant concentration of 0.5 wt% for all surfactants. In general triethanolamine lauryl sulfate showed larger separation factor than the other two surfactants. It was found that the percentage of membrane breakup reached its minimum values and the separation factor showed its maximum values at the surfactant concentration of 0.5 wt% for all three surfactants, which confirmed that efficient separation could be effected when emulsion liquid membrane were stable because of low membrane breakup.
고급지방산 카르복시 베타인류 양쪽성계면활성제의 합성 및 계면성
송해승,이향우,주명종,남기대 ( Hae Sng Song,Hyaung Woo Lee,Myung Jong Ju,Kie Dae Nam ) 충북대학교 산업과학기술연구소 1995 산업과학기술연구 논문집 Vol.9 No.2
Abstract_Roman Alkyl carboxy betaines, one of the amphoteric surfactants, that is to say 2-(trimethyl ammono)dodecanoate, 2-(trimethyl ammonio)tetradecanoate, 2-(trimethyl ammonio)hexadeeanoate and 2-(trimethyl ammonio)oetadecanoate have been synthesized