摘要
阐述单凝聚法制备胶囊机理、一般工艺过程,并采用天然高分子物质壳聚糖为壁材,维生素E(VE)为芯材,通过单凝聚法制备胶囊,最佳条件为芯壁比1∶1,乳化时间30 min,乳化搅拌速度7 500～9 000 r/min,乳化剂MMAS用量6.0 %,固化剂用量为壁材的2倍,低温固化60 min.胶囊为球体,体系分相明显,其粒度0.10～3.00 μm,且粒度比较均匀、分布范围窄,具有较好的耐热强度、稳定性和分散性.
In this article, the mechanism and general process of preparing capsule by monophasic coagulation were investigated, and capsules were prepared from natural macromolecule material chitosan as wall material and vitamin E as core material by monophasic coagulation. The optimum conditions were that core-wall ratio 1：1, emulsifying time 30 min, emulsifying stirring rate 7 500 - 9 000 r/min, emulsifier MMAS dosage 6.0 % , hardener dose was twice of that of wall material and hardenig time was 60 min at low temperature. The surface feature of the capsules was spheric and phase verge was obvious. The particle size was 0.10 - 3.00 μm. The particles obtained were uniform and their size distribution fluctuated in a small range, possessing high heat-resistance, stability and good dispersibility.
出处
《林产化学与工业》
EI
CAS
CSCD
2005年第3期115-119,共5页
Chemistry and Industry of Forest Products
关键词
壳聚糖
单凝聚法
超细胶囊
chitosan
monophasic coagulation
ultrafine capsule
