选用天然植物的液晶乳化剂Emulsifier HP 30,研究了配方组成和制备工艺对液晶形成的影响。研究结果表明,乳化剂Emulsifier HP 30形成液晶乳化体系的原理为临界堆积参数接近1,使乳化体系容易形成层状液晶结构。乳化速度、均质速度、乳化...选用天然植物的液晶乳化剂Emulsifier HP 30,研究了配方组成和制备工艺对液晶形成的影响。研究结果表明,乳化剂Emulsifier HP 30形成液晶乳化体系的原理为临界堆积参数接近1,使乳化体系容易形成层状液晶结构。乳化速度、均质速度、乳化时间和均质时间对液晶结构的形成有很大的影响,这主要是因为乳化速度、均质速度、乳化时间和均质时间会影响乳化粒径大小;油脂对液晶结构的影响主要在于油脂极性的大小对临界堆积参数的影响,使总的临界堆积参数偏离1,破坏了原来液晶结构的有序排列,导致液晶减少;羟乙基纤维素和黄原胶会明显减少液晶结构形成和数量,丙烯酰二甲基牛磺酸铵/VP共聚物可以有助于形成较多明亮的液晶结构。通过研究,制备了一款具有液晶结构的面霜。展开更多
考察了5种乳化剂及复配阴离子助乳化剂对液晶结构、稳定性、肤感、外观及保湿性的影响,旨在开发出一款适合干性肌肤、具有明显液晶结构、长效保湿并兼具滋润顺滑肤感的配方体系。实验结果表明,TEGO CARE 165、Olivem 1000K、Prolipid?14...考察了5种乳化剂及复配阴离子助乳化剂对液晶结构、稳定性、肤感、外观及保湿性的影响,旨在开发出一款适合干性肌肤、具有明显液晶结构、长效保湿并兼具滋润顺滑肤感的配方体系。实验结果表明,TEGO CARE 165、Olivem 1000K、Prolipid?141、仿生液晶、DOLCEA MB均会形成液晶结构,添加阴离子乳化剂硬脂酰谷氨酸钠会减少液晶的形成,考察体系中TEGO CARE 165体系液晶结构最为密集规整,滋润度及肤感最好,长期稳定性较好,具有长效保湿功效。该体系可作为液晶储备基质体系。展开更多
Solidification or crystallization of phase change emulsion in the form of fine emulsion drops in a direct contact coolant at temperatures below their freezing point was studied. This work is mainly focused on the size...Solidification or crystallization of phase change emulsion in the form of fine emulsion drops in a direct contact coolant at temperatures below their freezing point was studied. This work is mainly focused on the size and shape of the generated partides from phase change emulsified fats. Size of the particles is the major or key factor being considered during their formation, however, other factors that govern the particle size and shape were also observed. The operating parameters of the process were optimized in order to obtain particles of smaller size ranges in the window of current operating conditions. The crystallization of complex emulsion maffices is very difficult to control in the bulk at desired requirement. Hence, the emulsion drop to particle formation has advan- tage in comparison with the bulk solidification or crystallization. The main objective of this work is to achieve spherical emulsion particles in a direct contact cooling system. Parameters like： stat）ility, characterization, viscos- ity, and the effect of different energy inputs were examined. Moreover, the effects of the capillary size, interracial tension, temperature of the emulsion on the particle size were also monitrored.展开更多
文摘选用天然植物的液晶乳化剂Emulsifier HP 30,研究了配方组成和制备工艺对液晶形成的影响。研究结果表明,乳化剂Emulsifier HP 30形成液晶乳化体系的原理为临界堆积参数接近1,使乳化体系容易形成层状液晶结构。乳化速度、均质速度、乳化时间和均质时间对液晶结构的形成有很大的影响,这主要是因为乳化速度、均质速度、乳化时间和均质时间会影响乳化粒径大小;油脂对液晶结构的影响主要在于油脂极性的大小对临界堆积参数的影响,使总的临界堆积参数偏离1,破坏了原来液晶结构的有序排列,导致液晶减少;羟乙基纤维素和黄原胶会明显减少液晶结构形成和数量,丙烯酰二甲基牛磺酸铵/VP共聚物可以有助于形成较多明亮的液晶结构。通过研究,制备了一款具有液晶结构的面霜。
文摘考察了5种乳化剂及复配阴离子助乳化剂对液晶结构、稳定性、肤感、外观及保湿性的影响,旨在开发出一款适合干性肌肤、具有明显液晶结构、长效保湿并兼具滋润顺滑肤感的配方体系。实验结果表明,TEGO CARE 165、Olivem 1000K、Prolipid?141、仿生液晶、DOLCEA MB均会形成液晶结构,添加阴离子乳化剂硬脂酰谷氨酸钠会减少液晶的形成,考察体系中TEGO CARE 165体系液晶结构最为密集规整,滋润度及肤感最好,长期稳定性较好,具有长效保湿功效。该体系可作为液晶储备基质体系。
基金the Department of Chemical Engineering,COMSATS Institute of Information Technology,Lahore,Pakistan,for relieving them from their duties,and Higher Education Commission,Pakistan(A/07/96851)for providing the financial assistance to carry out Ph D study in cooperation with the German Academic Exchange Service(DAAD)
文摘Solidification or crystallization of phase change emulsion in the form of fine emulsion drops in a direct contact coolant at temperatures below their freezing point was studied. This work is mainly focused on the size and shape of the generated partides from phase change emulsified fats. Size of the particles is the major or key factor being considered during their formation, however, other factors that govern the particle size and shape were also observed. The operating parameters of the process were optimized in order to obtain particles of smaller size ranges in the window of current operating conditions. The crystallization of complex emulsion maffices is very difficult to control in the bulk at desired requirement. Hence, the emulsion drop to particle formation has advan- tage in comparison with the bulk solidification or crystallization. The main objective of this work is to achieve spherical emulsion particles in a direct contact cooling system. Parameters like： stat）ility, characterization, viscos- ity, and the effect of different energy inputs were examined. Moreover, the effects of the capillary size, interracial tension, temperature of the emulsion on the particle size were also monitrored.
