• 한국응용과학기술학회지
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• 제41권2호
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• pp.318-328
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• 2024

본 연구에서는 수크로스 스테아레이트(SS)의 유화력과 가용화력을 좀 더 향상시키기 위해, sodium deoxycholate (SDOC)와 PEG-40 hydrogenated castor oil (HCO)와의 혼합 조성물을 구성하였다. 혼합물의 최적 조성을 구하기 위해 혼합물 실험 계획법을 도입하여 실험을 진행하고, 실험에서 얻은 데이터를 회귀 분석하여 혼합물 조성의 변화가 혼합물의 특성에 미치는 영향을 살펴보았다. SS에 SDOC만을 첨가했을 때 코코넛 오일에 대한 유화력이 가장 향상되고, HCO만을 첨가했을 때는 가용화력이 가장 향상된 반면, 에스테르 오일인 cetyl ethylhexanoate (CEH)에 대한 유화력은 SDOC와 HCO를 함께 첨가했을 때 가장 크게 향상됨을 알 수 있었다. 코코넛 오일 및 CEH 각각에 대한 유화력과 가용화력, 3개의 특성치에 대한 동시 최적화를 실시한 결과, 최적의 계면활성제 혼합 조성은 SS 0.7939, SDOC 0.0586, HCO 0.1475로 구해졌다.

• 한국응용과학기술학회지
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• 제18권1호
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• pp.55-59
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• 2001

These N-acyl amino acid surfactants is normally produced by reaction of acid anhydride with sodium ${\ell}-glutamate$ hydrolysates under Schotten-Baumann condition i.e., in alkaline aqueous medium. To avoid using fatty acid chlorides, acylations were also carried out with the fatty acids themselves or with their methyl esters, but unfortunately these methods cannot be used in practice, dodecenyl succinic anhydride, was to be studied for their suitability as acylating agents the production if acylated glutamine hydrolysates. The surface activities including surface tension forming power, forming stability and emulsifying power were measured. The experimental results revealed that the products have a good emulsifying power. Thus, there derivatives will be expected to be used an emulsifying agent for O/W type cosmetic emulsion.

• 한국응용과학기술학회지
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• 제10권2호
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• pp.81-90
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• 1993

The Surfactants composed of acylated aterocollagen which is produced by the acylation of the side chain amino radicals of aterocollagen with an aliphatic acid having 12 to 18 carbon atoms will be discussed in this study. This condensation is done at moderate reaction temperature (<$25^{\circ}C$) in aqueous alkaline solution. The products of this reaction were identified by UV/VIS spectroscopy and infrared spectroscopy. For these compounds, surface active properties and physical properties including isoelectric point, Krafft point, surface tension, critical micelle concentration(cmc), foaming power, viscosity behaviour, water holding capacity, skin irritation and emulsifying power were measured respectively. The experimental results received that the products have a good emulsifying power, excellent water holding capacity while having low skin irritation. Thus, these derivatives will be expected to be used as an emulsifying agent for O/W type cosmetic emulsion.

• 한국응용과학기술학회지
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• 제6권2호
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• pp.53-58
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• 1989

A series of four sodium ${\alpha}-sulfo$ fatty acid allylester oligomers such as sodium ${\alpha}-sulfo$ lauric acid allylester oligomer, sodium ${\alpha}-sulfo$ myristic acid allyl ester oligomer, sodium ${\alpha}-sulfo$ palmitic acid allyl ester oligomer and sodum ${\alpha}-sulfo$ stearic acid allyl ester oligomer were examined for surface tension, defloculation effect and emulsifying power. Also critical micelle concentration (cmc) was evaluated. Consequently, these sodium allyl ${\alpha}-sulfo$ aliphatic carboxylate aligomers show o/w type emulsifying agent and dispersion effect in 1g/100ml soulution.

• 한국응용과학기술학회지
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• 제9권1호
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• pp.1-6
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• 1992

New five N-acyl-N-methyl taurate and their sodium salts were synthesized by acylating sodium N-methyl taurate in water in the presense of inorganic alkali as a catalyst. Wherein acyl group is a straight-chain radical of 10 to 18 carbon atoms. These compounds were identified by infrared spectroscopy. Surface activities of these sodium N-acyl-N-methyl taurate including surface tension, Ross-Miles foaming powers, foam stabilities, emulsifying powers and detergency were measured respectively. Also critical micelle concentration(cmc) were evaluated. Consequently these anionic surfactants with long chain acyl amine showed good emulsifying power of O/W type and had a good detergence.

• 한국응용과학기술학회지
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• 제29권1호
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• pp.47-53
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• 2012

유화제만을 사용하는 것 보다 더 좋은 유화특성을 갖는 유화보조제에 관한 연구이다. 그 화합물들은 숙신산과 프로필렌글리콜과의 에스테르화 반응에 의하여 합성되었다. 그 구조는 FT-IR과 $^1H$-NMR 분석으로 확인하였다. 표면장력, 임계미셀농도(cmc), 유화력 등 계면특성을 각각 주어진 조건하에서 시험하였다. 그 수용액의 표면장력은 33-35 dyne/cm 이었고, cmc는 표면장력법에 의하여 산정하였다. 그리고, 유화력은 호호바오일의 경우 우수하였다. 결과적으로 합성한 디프로필렌글리콜 숙시네이트는 O/W 유화에서의 유화보조제로서 응용이 기대된다.

• 공업화학
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• 제4권4호
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• pp.683-691
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• 1993

Sodium dodecyl polyoxyethylene ${\alpha}$-sulfa alkanoates류 15종에 대하여 표면장력, 기포력 및 그 안정성, 유화력, 분산성, 습윤성 및 가용화능 등의 계면활성을 실험하였다. 이들 시료의 묽은 수용액에 대한 임계미셀농도는 $10^{-4}{\sim}10^{-5}mo1/{\ell}$ 범위였고 그 농도범위에서의 표면장력은 30~47dyne/cm였으며, 일정농도 수용액에 대한 기포력 및 그 안정성, 벤젠 및 대두유에 대한 유화력, 탄산칼슘 및 산화철에 대한 분산성, 그리고 습윤력과 Orange OT에 대한 가용화능을 실험하여 검토한 결과 O/W형 유제 및 분산제로서의 응용성이 기대된다.

• 한국응용과학기술학회지
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• 제15권2호
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• pp.77-81
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• 1998

Surface active properties of these aqueous Gemini surfactant solutions including surface tension, critical micelle concentration(cmc), foaming power, foam stability, emulsifying power and Krafft point were measured at given conditions. They showed excellent properties, being compared with conventional single-chain surfactants such as sodium dodecyl sulfonate(SDS). Their surface tensions in the aqueous solutions were decreased to $30{\sim}38$ mN/m, which is lower than 39 mN/m of SDS, and their cmc values evaluated by surface tension method were $2.8{\times}10^{-5}{\sim}3.3{\times}10^{-4}$ mol/L. These values were also much lower than that of SDS, $9.8{\times}10^{-3}$ mol/L. The foaming power and foam stability, especially decyl and dodecyl compounds, were good and the emulsifying power in benzene or soybean oil was also excellent. All of the synthesized Gemini surfactants possessed good water solubility and their Krafft points were all below $0^{\circ}C$. As results, DDED and DDOD, Gemini surfactants which were synthesized are expected to be applied as foamers, emulsifiers and so on.

• 한국응용과학기술학회지
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• 제15권2호
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• pp.11-24
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• 1998

All the surface activities including surface tension, foaming power, foam stability, emulsifying power, dispersion effect, and detergency were measured and critical micelle concentration(cmc) was evaluated in dilute aqueous solution. The cmc evaluated by the Ring method was $10^{-3}{\sim}10^{-4}mol/L$ in case of monoesters, and $10^{-3}{\sim}5.0{\times}10^{-5}mol/L$ in case of diesters, respectively. Surface tension of the aqueous solution was decreased to $45{\sim}50dyne/cm$, showing the tendency that the ability of lowering the surface tension was dependent on increasing of carbon atom number in alkyl chain. Foaming power of all the monoesters was better than that of diesters. while foam stability of diesters was to the contrary. Emulsifying power of soybean oil or benzene was specially expected to be good for emulsifiers in industrial application fields. HLB values of monoesters and diesters evaluated by Griffin's method were in the range of 8 to 12. Dispersion property of ferric oxide was stable in the range of $4.5{\times}10^{-5}{\sim}5.0{\times}^{-4}mol/L$ in case of monoesters, and $10^{-5}{\sim}10^{-4}mol/L$ in case of diesters.

• 한국응용과학기술학회지
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• 제11권1호
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• pp.79-85
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• 1994

All the activities and physical properties including surface tension' foaming power, foam stability, emulsifying power, dispersion effect of 3-(N, N-dimethyl N-alkylammonio)-2-hydroxyY-1-propane sulfonate (HSB)류와 3-CN-alkylamidopropyl-N,N-dimethylamm-onjo)-2-hydroxy-1-propane sulfonate (APSB) aquous solution were measured and critical micelle concentration was evaluated. Their cmc of hydroxy sulfobetaine derivatives evaluated by the surface tension method was $1.0{\times}10^{-3}{\sim}1.0{\times}10^{-4}$ mol/l, and surface tension of the aquous solution was decreased to $27{\sim}38dyne/cm$. The experimental results for foaming power, foam stability, emulsifying power in liquid paraffin showed a good surface active properties, especially, dispersion effect in ferric oxide exhibited some efficient surface active properties, and then it would be expected to application as detergent and dispersion agent.