Study on antibacterial starch/chitosan blend film formed under the action of irradiation | essay | essays and dissertationOther SubjectsOther Science and Technology

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[essays and dissertation][Other Subjects][Other Science and Technology]Study on antibacterial starch/chitosan blend film formed under the action of irradiation论文

论文编号： lw200708171114483702

论文属性： essay

论文语言：English

论文国家：China

登出日期： 2007-08-17

字数： 3163

源程序：无

价格： 100

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关键词搜索：Starch chitosan irradiation tensile strength blend film antibacterial.
Study on antibacterial starch/chitosan blend film formed under the action of irradiation Abstract Starch/chitosan blend films were prepared by irradiation of compression-molded starch-based mixture in physical gel state with electron beam (EB) at room temperature. The influence of chitosan and radiation on the properties of the prepared films was investigated. The tensile strength and the flexibility of starch film were improved largely after incorporation of 20% chitosan into starch film. X-ray diffraction and SEM analyses of starch/chitosan blend films indicated that there was interaction and microphase separation between starch and chitosan molecules. Furthermore, in order to produce a kind of antibacterial films, the starch/chitosan blend film was irradiated, and the antibacterial activity of the starch/chitosan blend films against Escherichia coli(E.coli) was measured via optical density method. After irradiation, there is no obvious change in the structure of starch/chitosan blend films, but antibacterial activity was induced even when the content of chitosan was only 5% due to the degradation of chitosan in blend films under the action of irradiation. Key words: Starch; chitosan; irradiation; tensile strength; blend film; antibacterial.英语论文网【http://www.51lunwen.org】本文来自：英语论文网【http://www.51lunwen.org】
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