Preparation of PCM microcapsules by complex coacervation of silk fibroin and chitosan
Preparation of PCM microcapsules by complex coacervation of silk fibroin and chitosan
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DOI：
10.1007/s00396-009-2115-z
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发表时间：
2009-12-01
影响因子：
2.4
通讯作者：
Basal, Guldemet
中科院分区：
文献类型：
--
作者：
Deveci, Senem Sirin;Basal, Guldemet
采用复凝聚法将丝素蛋白（SF）与壳聚糖（CHI）复合制备相变材料微胶囊。正二十烷用作芯材。研究了SF/CHI比例、交联剂用量、正二十烷含量对微胶囊性能的影响。用光学显微镜和扫描电镜对微胶囊的粒径分布和表面形貌进行了表征。用能谱分析法测定了芯材的包封率。结果表明，成功制备了SF/CHI微胶囊。当SF与CHI的比例接近5时，微胶囊具有光滑的外表面。另一方面，在高SF/CHI比率（千分之一日元14）下，微胶囊显示出两层结构，内部致密层和外部多孔海绵状层。当SF/CHI = 20、交联剂用量为0.9%、正二十烷含量为1.5%时，微胶囊化效率最高。
Phase change material microcapsules were prepared by complex coacervation of silk fibroin (SF) and chitosan (CHI). n-Eicosane was used as the core material. The effects of SF/CHI ratio, and percentage of cross-linking agent and n-Eicosane content on the properties of microcapsules were studied. The size distribution and the surface morphology of microcapsules were characterized by optical and scanning electron microscopy. The encapsulation of core material was determined by energy dispersive spectrometer analysis. The results indicated that SF/CHI microcapsules were prepared successfully. Microcapsules had smooth outer surface when the ratio of SF to CHI was close to 5. On the other hand, at high SF/CHI ratios (a parts per thousand yen14), microcapsules showed a two-layer structure, an inner compact layer, and an outer, more porous, sponge-like layer. The highest microencapsulation efficiency was obtained at a SF/CHI ratio of 20 in the presence of 0.9% cross-linking agent and of 1.5% n-Eicosane content.