材料科学
壳聚糖
聚乙二醇
聚合物
化学工程
钙
磷酸盐
水溶液
海藻酸钙
氯化物
电喷雾
核化学
色谱法
有机化学
质谱法
复合材料
化学
工程类
冶金
作者
Ayumi Yunoki,Eiko Tsuchiya,Yu Fukui,Akihiro Fujii,Tatsuo Maruyama
摘要
Microcapsules composed of calcium phosphate and chitosan were prepared in a single step by electrospraying. An aqueous solution containing calcium chloride and chitosan was electrosprayed into a phosphate solution to form a calcium phosphate shell on the sprayed droplets. The resulting microcapsules were 350 μm in average diameter. Investigation using fluorescently labeled chitosan and XRD measurements revealed that the shells of the microcapsules were composed of calcium phosphate (mainly hydroxyapatite) and chitosan. Instead of chitosan, poly(diallyldimethylammonium chloride) and polyethylene glycol were also available for microcapsule production by electrospraying. Variations in the electrospraying conditions resulted in a variety of microcapsule shapes. Various types of substrates were successfully encapsulated in microcapsules with a high encapsulation efficiency (more than 80%). Finally, we succeeded in the encapsulation of living yeast cells in microcapsules, and observed their growth within these microcapsules.
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