中文摘要：

利用乳化稳定指数法和偏光显微镜研究了5种微胶囊常用壁材乳状液的稳定性．乳化稳定指数法测得乳化稳定性大小为：阿拉伯胶〉变性淀粉〉明胶〉大豆分离蛋白〉羧甲基纤维素．偏光显微镜观察5种壁材所成乳状液液滴的粒径分布为：阿拉伯胶25．4～39．0pix，变性淀粉25．5～31．1pix，明胶21～40．2pix，大豆分离蛋白41．0～136．1pix，羧甲基纤维素19．3～156．1pix．液滴的平均粒径越小，分布范围越窄，稳定性就越好，由此可知偏光显微镜的观察结果与乳化稳定指数法的试验结果相符合．

英文摘要：

In this paper, we studied the stability of the five kinds of common wall material emulsion of microcapsule by using emulsion stability index method and polarizing microscope. The experimental results showed that the order of emulsion stability of the five kinds of wall material emulsion was as follows, from high to low, arabic gum, modified starch, gelatin, soy protein isolate, and carboxymethyl cellulose. The polarizing microscope results showed that the particle sizes of emulsion droplets of the five kinds of wall materials were as follows： arabic gum 25.4～39.0 pix, modified starch 25.5～31.1 pix, gelatin 21～40.2 pix, soy protein isolate 41.0～136.1 pix, and carboxymethyl cellulose 19.3～156.1 pix. The droplets with smaller average particle size had narrower distribution range and better stability. Accordingly, the observation results of the polarizing microscope were in consistent with that of the emulsion stability index method.