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고분자(高分子) 계면활성제(界面活性劑)에 관(關)한 연구(硏究) 1 : 나트륨 알파 술폰 지방산(脂肪酸) 비닐에스테르 올리머고류(類)의 합성(合成)
정노희,노승호,남기대,소부영 한국유화학회 1989 한국응용과학기술학회지 Vol.6 No.1
Four fatty acid vinyl esters were synthesized by transesterification between vinyl acetate and lauric acid, myristic acid, palmitic acid, stearic acid, respectively. Fatty acid vinyl ester oligomers were prepared from polymerization of four fatty acid vinyl esters in the presence of potassium persulfate in methanol. The α-sulfonation of these four fatty acid vinyl ester oligomer were carried by direct addition of sulfur trioxide. Especially, molecular weights of sodium α-sulfo fatty acid vinyl ester oligomers were measured by boiling point method.
고분자 계면활성제에 관한 연구 ( 제6보 ) - 알파 술폰 지방산 음이온성 올리고머 계면활성제의 계면성 -
정노희,박상석,전환경,조경행,남기대 ( No Hee Jeong,Sang Seok Park,Hoan Kyung Jeong,Kyung Haeng Cho,Ki Dae Nam ) 한국공업화학회 1993 공업화학 Vol.4 No.4
Sodium dodecyl polyoxyethylene α-sulfo alkanoates류 15종에 대하여 표면장력, 기포력 및 그 안정성, 유화력, 분산성, 습윤성 및 가용화능 등의 계면활성을 실험하였다. 이들 시료의 묽은 수용액에 대한 임계미셀농도는 10^(-4)∼10^(-5)㏖/ℓ 범위였고 그 농도범위에서의 표면장력은 30∼47dyne/㎝였으며, 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. All the activities and physical properties including surface tension, foaming power, foam stability, emulsifying power, dispersion effect, wettability and solubilization of sodium dodecyl polyoxyethylene α-sulfo alkanoates aqueous solution were measured and critical micelle concentration was evaluated. Their cmc ebaluated by the surface tension method was 10^(-4)∼10^(-5)㏖/ℓ, and surface tension of the aqueous solution was decreased to 30∼70dyne/㎝. The experimental results for foaming power, foam stability, emulsifying power in benzene or soybean oil, dispersion effect in calcium carbonate, wettability and solubilization showed a good and efficient surface active properties, and then it would be expected that these products could be applied as O/W type emulsifier, dispersion agent.
고분자 계면활성제에 관한 연구 ( 제5보 ) - 알파 술폰 지방산 음이온성 올리고머 계면활성제의 합성 -
정노희,박상석,정환경,조경행,남기대 ( N . H . Jeong,S . S . Park,H . K . Jeong,K . H . Cho,K . D . Nam ) 한국공업화학회 1993 공업화학 Vol.4 No.2
탄소수 10∼18 범위에 있는 고급지방산 즉, decanoic acid, dodecanoic acid, tetradecanoic acid, hexadecanoic acid 및 octadecanoic acid 등을 SO_3-dioxane complex로 α-술폰화 한 다음, dodecanol-1에 에틸렌옥사이드를 5몰, 10몰, 20몰씩 부가시켜 제조한 POE 알킬 에테르류와 각각 반응시켜 15종의 올리고머 음이온성 계면활성제를 좋은 수율로 합성하였고, 이들 최종 합성화합물에 대하여 IR, NMR, 원소분석 등 기기분석을 행하여 분리확인하였다. Anionic oligomer surfactants, dodecyl polyoxyethylene α-sulfo alkanoates, had been synthesized through the esterification of dodecyl polyoxyethylene glycol and α-sulfo alkanoic acid with straight chain alkyl group having from 10 to 18 carbon atoms to good yield. α-sulfo alkanoic acids were obtained by reaction with long chain alkanoic acids and sulfur trioxide-dioxane complex, and dodecyl polyoxyethylene glycols, by addition reaction with dodecyl alcohol and ethylene oxide(addition, 5, 10, 20㏖) respectively. All the synthetic products could be separated by means of the thin layer and column chromatography, and their structure has characterized with IR, ^1HNMR and elemental analysis, respectively.
광학활성 이소로이신을 출발물질로 한 강유전성 액정물질의 합성
정노희,기쿠치,카지야마 ( N,H . Jeong,H . Kikuchi,T . Kajiyama ) 한국유화학회 1996 한국응용과학기술학회지 Vol.13 No.3
A new one seies of chiral schiffs base containing benzylidene aniline moieties was synthesized and characterized by IR, ^1H NMR. elementary analysis, and polarized optical microscopy(POM). The yield of these synthetic compounds was in the range of 62~67℃. The results showed that most of the synthetic compounds were monotropic liquid crystal and exhibited chiral smectic C(Sc^*) liquid crystal phases, and the range of phase transition temperature was to 71.4℃ from 45.0℃.
고분자(高分子) 계면활성제(界面活性劑)에 관(關)한 연구(硏究) 2 : 나트륨 알파 술폰 지방산(脂肪酸) 비닐에스테르 올리고머류(類)의 계면활성(界面活性)
정노희,남기대,소부영,소희준 한국유화학회 1989 한국응용과학기술학회지 Vol.6 No.1
A series of four sodium α-sulfo fatty vinyl ester oligomers including sodium α-sulfo lauric acid vinyl ester oligomer, sodium α-sulfo myristic acid vinyl ester oligomer, sodium α-sulfo palmitic acid vinyl ester oligomer and sodium α-sulfo stearic acid vinyl ester oligomer were examined for surface activities such as surface tension, foaming power, foam stability, emulsifying power, dispersion effect, solubilization of orange OT. The critical micelle concentration(CMC) was also evaluated. Consequently, these sodium α-sulfo fatty acid vinyl ester oligomers were shown to have a good cohesive power and dispersion effect.
고분자(高分子) 계면활성제(界面活性劑)에 관(關)한 연구(硏究) (제(第) 2 보(報));나트륨 알파 술폰 지방산(脂肪酸) 비닐에스테르 올리고머류(類)의 계면활성(界面活性)
정노희,남기대,소부영,소희준,Jeong, No-Hee,Nam, Ki-Dae,So, Boo-Young,So, Hee-Jun 한국응용과학기술학회 1989 한국응용과학기술학회지 Vol.6 No.1
A series of four sodium ${\alpha}-sulfo$ fatty vinyl ester oligomers including sodium ${\alpha}-sulfo$ lauric acid vinyl ester oligomer, sodium ${\alpha}-sulfo$ myristic acid vinyl ester oligomer, sodium ${\alpha}-sulfo$ palmitic acid vinyl ester oligomer and sodium ${\alpha}-sulfo$ stearic acid vinyl ester oligomer were examined for surface activities such as surface tension, foaming power, foam stability, emulsifying power, dispersion effect, solubilization of orange OT. The critical micelle concentration(CMC) was also evaluated. Consequently, these sodium ${\alpha}-sulfo$ fatty acid vinyl ester oligomers were shown to have a good cohesive power and dispersion effect.