<국문초록> 저자극의 친환경적 샴푸 개발에 필요한 원료 혼합물 설계를 위해, 먼저 계면활성제 혼합물 조성의 최적화를 시도하였다. 아미노산 계열 계면활성제를 포함한 여러 계면활성제 간의 세정 특성을 비교한 후, 세정력, 기포형성력, 오염률에서 각각 우수한 특성을 나타내는 계면활성제 3종 sodium cocoyl alaninate (SCoA), cocamidopropyl ...
<국문초록> 저자극의 친환경적 샴푸 개발에 필요한 원료 혼합물 설계를 위해, 먼저 계면활성제 혼합물 조성의 최적화를 시도하였다. 아미노산 계열 계면활성제를 포함한 여러 계면활성제 간의 세정 특성을 비교한 후, 세정력, 기포형성력, 오염률에서 각각 우수한 특성을 나타내는 계면활성제 3종 sodium cocoyl alaninate (SCoA), cocamidopropyl betaine (CPB), decyl glucoside (DG)를 선정하였다. 심플렉스 중심 설계 배열에 따라, 계면활성제 3종 혼합물의 조성에 따른 특성 변화를 관측하고, 실험으로부터 얻은 데이터를 가지고 회귀분석을 실시하였다. 통계적으로 유의미한 반응 표면 모델식을 구하고, 세 개의 반응변수의 동시 최적화 과정을 통해 계면활성제 혼합물의 최적 조성을 구하였다. 두 번째 단계에서는, 천연 셀룰로오스를 양이온화한 고분자인 polyquaternium-10 (PQ-10)과 아미노산 계열 음이온성 계면활성제인 SCoA 간 혼합비율에 따라 형성된 다양한 콤플렉스 수용액의 상거동을 살펴보았다. PQ-10 수용액에 SCoA를 혼합했을 때, SCoA 농도별 형성되는 콤플렉스 수용액의 점도 및 탄성률 변화를 비교하고 이완 시간 등을 산출하였다. 또한 전단 응력-변형률 측정을 통해, 씩소트로픽(thixotropic) 거동을 살펴보고, Herschel–Bulkley fluid 모델식을 적용하여 흐름거동 지수인 n 값을 구하였다. 마지막으로 SCoA의 순수 물에서의 CMC 값와 PQ-10 수용액에서의 CAC 값을 비교하고 PQ-10과 SCoA 조합이 물의 젖음성에 주는 영향을 살펴보았다. 마지막 단계에서는 SCoA, CPB, PQ-10를 다양한 조성으로 혼합하여 투명 제형과 에멀젼 제형의 샴푸를 각각 제조하였다. 혼합조성에 따른 다양한 특성변화를 살펴보고 희석 농도별, 혼합 조성별 코아세르베이트 생성량을 비교하면서, 혼합조성이 샴푸 제형의 특성에 미치는 영향을 분석하였다.
<국문초록> 저자극의 친환경적 샴푸 개발에 필요한 원료 혼합물 설계를 위해, 먼저 계면활성제 혼합물 조성의 최적화를 시도하였다. 아미노산 계열 계면활성제를 포함한 여러 계면활성제 간의 세정 특성을 비교한 후, 세정력, 기포형성력, 오염률에서 각각 우수한 특성을 나타내는 계면활성제 3종 sodium cocoyl alaninate (SCoA), cocamidopropyl betaine (CPB), decyl glucoside (DG)를 선정하였다. 심플렉스 중심 설계 배열에 따라, 계면활성제 3종 혼합물의 조성에 따른 특성 변화를 관측하고, 실험으로부터 얻은 데이터를 가지고 회귀분석을 실시하였다. 통계적으로 유의미한 반응 표면 모델식을 구하고, 세 개의 반응변수의 동시 최적화 과정을 통해 계면활성제 혼합물의 최적 조성을 구하였다. 두 번째 단계에서는, 천연 셀룰로오스를 양이온화한 고분자인 polyquaternium-10 (PQ-10)과 아미노산 계열 음이온성 계면활성제인 SCoA 간 혼합비율에 따라 형성된 다양한 콤플렉스 수용액의 상거동을 살펴보았다. PQ-10 수용액에 SCoA를 혼합했을 때, SCoA 농도별 형성되는 콤플렉스 수용액의 점도 및 탄성률 변화를 비교하고 이완 시간 등을 산출하였다. 또한 전단 응력-변형률 측정을 통해, 씩소트로픽(thixotropic) 거동을 살펴보고, Herschel–Bulkley fluid 모델식을 적용하여 흐름거동 지수인 n 값을 구하였다. 마지막으로 SCoA의 순수 물에서의 CMC 값와 PQ-10 수용액에서의 CAC 값을 비교하고 PQ-10과 SCoA 조합이 물의 젖음성에 주는 영향을 살펴보았다. 마지막 단계에서는 SCoA, CPB, PQ-10를 다양한 조성으로 혼합하여 투명 제형과 에멀젼 제형의 샴푸를 각각 제조하였다. 혼합조성에 따른 다양한 특성변화를 살펴보고 희석 농도별, 혼합 조성별 코아세르베이트 생성량을 비교하면서, 혼합조성이 샴푸 제형의 특성에 미치는 영향을 분석하였다.
An optimization of surfactant mixture was performed in order to design a mixture necessary for the development of eco-friendly shampoo with low-irritation, After comparing various cleaning properties among amino acid-based surfactants, glucose-based surfactants, and PEG-based surfactants, thre...
An optimization of surfactant mixture was performed in order to design a mixture necessary for the development of eco-friendly shampoo with low-irritation, After comparing various cleaning properties among amino acid-based surfactants, glucose-based surfactants, and PEG-based surfactants, three surfactants, sodium cocoyl alanine (SCoA), cocamidopropyl betaine (CPB), and decyl glucoside (DG), each showing excellent properties in detergency, foaming ability, and contamination rate, were selected, The experiments by simplex centroid design matrix for three surfactants mixture were performed, and regression analysis was conducted with the experimental data. Surface response model equations, which is statistically significant (p<0.05), were obtained and an optimal composition of the surfactant mixture was determined from simultaneous optimization of three response variables. In the second step, the phase behavior of various complex aqueous solutions formed according to the mixing ratio between polyquaternium-10 (PQ-10), a cationized polymer of natural cellulose, and SCoA, an amino acid-based anionic surfactant, was examined. When SCoA was added in the PQ-10 aqueous solution, the changes in viscosity and modulus of the complex solution formed for each SCoA concentration were compared, and a relaxation time was calculated. In addition, by measuring the shear stress-strain rate, the thixotropic behaviors were investigated and the Herschel–Bulkley fluid model equation was applied to obtain the flow behavior index, n value. Finally, the CMC value of SCoA in pure water and the CAC value of SCoA in PQ-10 solution were compared, and the effect of the combination of PQ-10 and SCoA on the wettability of water was investigated. In the last step, SCoA, CPB, and PQ-10 were mixed in various compositions to prepare transparent and emulsion type shampoos, respectively. Various changes in the properties of shampoo with the mixing composition and the amount of coacervate produced according to dilution concentration and mixing composition, were examined. By mixing the two surfactants SCoA and CPB, the foaming ability was improved and the coacervate formation was also increased.
An optimization of surfactant mixture was performed in order to design a mixture necessary for the development of eco-friendly shampoo with low-irritation, After comparing various cleaning properties among amino acid-based surfactants, glucose-based surfactants, and PEG-based surfactants, three surfactants, sodium cocoyl alanine (SCoA), cocamidopropyl betaine (CPB), and decyl glucoside (DG), each showing excellent properties in detergency, foaming ability, and contamination rate, were selected, The experiments by simplex centroid design matrix for three surfactants mixture were performed, and regression analysis was conducted with the experimental data. Surface response model equations, which is statistically significant (p<0.05), were obtained and an optimal composition of the surfactant mixture was determined from simultaneous optimization of three response variables. In the second step, the phase behavior of various complex aqueous solutions formed according to the mixing ratio between polyquaternium-10 (PQ-10), a cationized polymer of natural cellulose, and SCoA, an amino acid-based anionic surfactant, was examined. When SCoA was added in the PQ-10 aqueous solution, the changes in viscosity and modulus of the complex solution formed for each SCoA concentration were compared, and a relaxation time was calculated. In addition, by measuring the shear stress-strain rate, the thixotropic behaviors were investigated and the Herschel–Bulkley fluid model equation was applied to obtain the flow behavior index, n value. Finally, the CMC value of SCoA in pure water and the CAC value of SCoA in PQ-10 solution were compared, and the effect of the combination of PQ-10 and SCoA on the wettability of water was investigated. In the last step, SCoA, CPB, and PQ-10 were mixed in various compositions to prepare transparent and emulsion type shampoos, respectively. Various changes in the properties of shampoo with the mixing composition and the amount of coacervate produced according to dilution concentration and mixing composition, were examined. By mixing the two surfactants SCoA and CPB, the foaming ability was improved and the coacervate formation was also increased.
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