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이수민,이주연,유현필,박기호,김병조,임종주 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.1
Interest in biosurfactants has been steadily increasing in recent years due to their diversity, environmentally friendly nature such as nontoxicity and excellent biodegradability, possibility of large-scale production and potential applications in environmental protection. In this study, amino acid biosurfactants were synthesized for cosmetics and household product applications. Economic and environmentally friendly biosurfactants with excellent biodegradable characteristics were derived from renewable vegetable oils such as cottonseed oil, palm oil, and coconut oil. The structure of the resulting products was elucidated by 1H NMR, and 13C NMR spectroscopies and environmental compatibility such as biodegradability and acute oral toxicity was evaluated. The interfacial characteristics of the synthesized surfactant including surface tension, critical micelle concentration, interfacial tension, wetting property, emulsification activity, viscosity and foam property have been examined.
이수민,이주연,유현필,박기호,김병조,임종주 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.1
Interest in biosurfactants has been steadily increasing in recent years due to their diversity, environmentally friendly nature such as nontoxicity and excellent biodegradability, selectivity, performance under extreme conditions, and potential applications in environmental protection. In this study, saccharide polymeric biosurfactants with excellent biodegradable characteristics were synthesized from renewable vegetable oils such as cottonseed oil, palm oil, and coconut oil for cosmetic products applications. The structure of the resulting products was elucidated by <sup>1</sup>H NMR, and <sup>13</sup>C NMR spectroscopies and environmental compatibility of the synthesized polymeric surfactants such as biodegradability, acute oral toxicity, skin and eye irritation was also evaluated. The interfacial properties of synthesized polymeric surfactants have been evaluated such as CMC, static and dynamic surface tension, interfacial tension, wetting property, emulsification activity, viscosity, and foam property.
이수민,이주연,유현필,임종주 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.38 No.-
In this study, environment friendly nonionic surfactants were synthesized from sugar base and theirstructure was characterized by 1H-NMR, 13C-NMR and FT-IR. The newly synthesized SA08 seriessurfactants showed excellent interfacial properties such as low CMC, surface tension and interfacialtension, and superior foam stability. Detergency tests using three different types of artificial soils haverevealed that the synthesized surfactants showed moderately good detergency presumably due toexcellent interfacial properties and stereoscopic molecular structure of SA08 series surfactants. Environmental compatibility test showed that SA08-07 surfactant exhibited low toxicity compared withconventional nonionic and anionic surfactants and excellent biodegradability.
이예진,조선희,박기호,유현필,임종주 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0
본 연구에서는 천연 유래의 코코넛 오일을 원료로 사용하여 2 종류의 아미노산계 음이온 생체계면활성제 포타슘 코코일 글리시네이트(CGK)와 소듐 코코일 글리시네이트(CGK)를 합성하였으며, 합성한 계면활성제의 구조를 FT-IR, 1H-NMR 및 13C-NMR 분석을 통하여 규명하였다. 합성한 계면활성제에 대하여 계면물성을 측정한 결과, CGK와 CGN 모두 계면 활성이 우수하고 계면 에너지를 낮추는데 효과적임을 알 수 있었다. 세정력 시험에서는 세제에 일반적으로 사용되는 계면활성제와 비교했을 때 상대적으로 우수한 세정력을 나타냈다. CGK와 CGN 모두 환경적합성 시험에서 쉽게 생분해되고 독성이 없으며 자극적이지 않고 매우 약한 것을 알 수 있었다. 특히, CGK 계면활성제가 CGN 계면활성제와 비교하여 계면 에너지를 낮추는데 보다 효과적이었는데 이는 CGK가 소수성이 더 크고 계면활성제 단분자가 벌크 용액으로 부터 공기와 수용액의 계면으로 이동하는 속도가 빨라서 공기와 수용액의 계면이 계면활성제 단분자에 의해 더 짧은 시간에 포화되기 때문임을 알 수 있었으며, 세제에 적용될 수 있을 것으로 기대된다.