The physicochemical properties,including the density,viscosity,and refractive index of aqueous solutions of sodium glycinate as a solvent for CO_2 absorption in the non-precipitation regime were measured under the wid...The physicochemical properties,including the density,viscosity,and refractive index of aqueous solutions of sodium glycinate as a solvent for CO_2 absorption in the non-precipitation regime were measured under the wide temperature range of 298.15 to 343.15 K.The concentration of the sodium glycinate in an aqueous form in the non-precipitation regime was identified up to 2.0 mol ? L^(-1).The coefficients of thermal expansion values were estimated from measured density data.It was found that,the densities,viscosities and refractive indices of the aqueous sodium glycinate decrease with an increase in temperature,whereas with increasing sodium glycinate concentration in the solution,all three properties increase.Thermal expansion coefficients slightly increase with rising temperature and concentration.The measured values of density,viscosity and refractive index were correlated as a function of temperature by using the least squares method.The predicted data obtained from correlation equations for all measured properties were in fairly good agreement with the experimental data.展开更多
从泡沫量与结构、结膏温度、质地以及稳定性等方面,研究了4种不同乳化剂对以椰油酰甘氨酸钠为主的结晶型洁面膏的影响。结果表明,聚甘油类乳化剂Hostacerin®DGSB使配方结膏温度降低,同时配方具有更高的硬度、浓稠度以及黏性,显著...从泡沫量与结构、结膏温度、质地以及稳定性等方面,研究了4种不同乳化剂对以椰油酰甘氨酸钠为主的结晶型洁面膏的影响。结果表明,聚甘油类乳化剂Hostacerin®DGSB使配方结膏温度降低,同时配方具有更高的硬度、浓稠度以及黏性,显著提高配方的稳定性;磷酸酯类乳化剂Hostaphat®KW340D能提高洁面膏的泡沫稳定性,明显提高配方的结膏温度以及与珠光剂的相容性,也能明显提高硬度、浓稠度、黏性以及配方的稳定性。液晶型乳化剂Plantasens®Emulsifier HP 30能显著提高泡沫的细密程度与稳定性,硬度提高的同时也有比较好的铺展性;而聚醚类乳化剂Eumulgin®S21与体系的兼容性差,导致泡沫量明显减少,泡沫的稳定性也最差,虽然能提高结膏温度,但加速洁面膏的失稳过程,因此不适用于该体系。展开更多
基金Universiti Teknologi PETRONAS for providing financial support(Grant number YUTP-15-8209-005)RCCO_2C for technical support to complete the present research work
文摘The physicochemical properties,including the density,viscosity,and refractive index of aqueous solutions of sodium glycinate as a solvent for CO_2 absorption in the non-precipitation regime were measured under the wide temperature range of 298.15 to 343.15 K.The concentration of the sodium glycinate in an aqueous form in the non-precipitation regime was identified up to 2.0 mol ? L^(-1).The coefficients of thermal expansion values were estimated from measured density data.It was found that,the densities,viscosities and refractive indices of the aqueous sodium glycinate decrease with an increase in temperature,whereas with increasing sodium glycinate concentration in the solution,all three properties increase.Thermal expansion coefficients slightly increase with rising temperature and concentration.The measured values of density,viscosity and refractive index were correlated as a function of temperature by using the least squares method.The predicted data obtained from correlation equations for all measured properties were in fairly good agreement with the experimental data.
文摘从泡沫量与结构、结膏温度、质地以及稳定性等方面,研究了4种不同乳化剂对以椰油酰甘氨酸钠为主的结晶型洁面膏的影响。结果表明,聚甘油类乳化剂Hostacerin®DGSB使配方结膏温度降低,同时配方具有更高的硬度、浓稠度以及黏性,显著提高配方的稳定性;磷酸酯类乳化剂Hostaphat®KW340D能提高洁面膏的泡沫稳定性,明显提高配方的结膏温度以及与珠光剂的相容性,也能明显提高硬度、浓稠度、黏性以及配方的稳定性。液晶型乳化剂Plantasens®Emulsifier HP 30能显著提高泡沫的细密程度与稳定性,硬度提高的同时也有比较好的铺展性;而聚醚类乳化剂Eumulgin®S21与体系的兼容性差,导致泡沫量明显减少,泡沫的稳定性也最差,虽然能提高结膏温度,但加速洁面膏的失稳过程,因此不适用于该体系。
