Polymer Microcapsules with a Fiber-Reinforced Nanocomposite Shell

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• 作者：Leonard M. C. Sagis ; Ri&euml ; lle de Ruiter ; Francisco J. Rossier Miranda ; Jolet de Ruiter ; Karin Schro&euml ; n ; Adriaan C. van Aelst ; Henk Kieft ; Remko Boom ; Erik van der Linden
• 刊名：Langmuir
• 出版年：2008
• 出版时间：March 4, 2008
• 年：2008
• 卷：24
• 期：5
• 页码：1608 - 1612
• 全文大小：346K
• 年卷期：v.24,no.5(March 4, 2008)
• ISSN：1520-5827

文摘

Polymer microcapsules can be used as controlled release systems in drugs or in foods. Using layer-by-layer adsorptionof common food proteins and polysaccharides, we produced a new type of microcapsule with tunable strength andpermeability. The shell consists of alternating layers of pectin and whey protein fibrils, yielding a fiber-reinforcednanocomposite shell. The strength can be tightly controlled by varying the number of layers or the density and lengthof the fibrils in the protein layers. The mechanical stability of these microcapsules appears to be superior to that ofcurrently available multilayer capsules. The method involves only standard unit operations and has the potential forscaling up to industrial production volumes.