Study on Encapsulation of Soluble Material

• Main Authors: WEN-HUAN SHENG, 沈文煥
• Other Authors: 王詠騰
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/hf3h8d

碩士 === 嘉南藥理科技大學 === 化妝品科技研究所 === 96 === Abstract The microencapsulation of liquid crystals is the goal of this study. We chose the liquid crystals as a core material, acacia and gelatin as shell materials, and food curing agent. The complex coacervation method under optimal conditions is used to process microencapsule. Liquid crystals, which change color at room temperature variations, are used as the core. There are several encapsulating parameters including the concertration of the shell, the ratio of the core and shell, temperature, emulsification time, stirring speed, pH value, curing time, volume of and distilled water curing agent. These encapsulating parameters are influenced by microencapsulation yield, mean particle diameter and microencapsulation. The result shows that the optimal conditions to process quality appearance of microencapsules such as smooth shell and changing color and to produce mean particle diameter of 9.64μm and microencapsulation yield of 71.23% are the following: the concentration of acacia and gelatin is 1 % each, the proportion of the shell and core is 1:1:1, temperature is 60℃, the emulsification time is 5 minutes, stirring speed is 500rpm, pH value is 4.0, dilution by 100mL with distilled water, curing agent is 3mL and curing time is 1 hour. Keywords： liquid crystals, microencapsule, microencapsulation yield