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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/27165

Title: Cavitation effects versus stretch effects resulted in different size and polydispersity of ionotropic gelation chitosan-sodium tripolyphosohate nanoparticle
Authors: Min Lang Tsai;Shi Wei Bai;Rong Huei Chen
Contributors: 國立臺灣海洋大學:食品科學系
Keywords: Chitosan;Tripolyphosphate;Nanoparticle;Particle size;Cavitation;Stretch
Date: 2008-02-08
Issue Date: 2011-10-21T02:23:48Z
Publisher: Carbohydrate Polymers
Abstract: Abstract:The objectives of the study are to compare different modes and input-energy levels of ultrasonic radiation and mechanical shearing on the changes in mean diameter of resulted ionotropic gelation chitosan-sodium tripolyphosphate (TPP) nanoparticles, and to elucidate the different effects on the size and polydispersity different caused by cavitation effects versus stretch effects owing to using different modes of mechanical energy. The results obtained were fellows: The particle size and reduction rate of ionotropic gelation chitosan TPP can be manipulated by varying different mechanical energy of ultrasonic radiation or mechanical shearing. Effects of solution temperature on resulted nanoparticle size by ultrasonic treatment or by mechanical shearing were different. The higher the solution temperature, the lower the solution viscosity that facilitate the sporadic cavitation effect that exerted on the chitosan molecules producing smaller molecular weight fragments than that producing by stretching effects. Mean diameter of nanoparticle decreased with increasing solution temperature in ultrasonic radiation samples.
Relation: 71(3), pp.448-457
URI: http://ntour.ntou.edu.tw/handle/987654321/27165
Appears in Collections:[食品科學系] 期刊論文

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