文档介绍：Forpersonaluseonlyinstudyandresearch;mercialuse膅壳聚糖论文:壳聚糖地改性研究薄蒁【中文摘要】本论文首先利用甲氧基聚乙二醇(mPEG),与壳聚糖分子链上3位羟基发生酯化反应,制备出梳形可分散于水地甲氧基聚乙二醇接枝壳聚糖(CS-g-mPEG).采用红外光谱(IR)、核磁共振(1H-NMR)对CS-g-mPEG地结构进行了表征,结果表明这种方法可以成功制备CS-g-,CS-g-,本论文在壳聚糖上面引入聚乳酸,壳聚糖上地羟基引发丙交酯开环聚合得到壳聚糖-聚乳酸(CS-g-PLA)(IR)和核磁共振(1H-NMR),,本文还利用胺解技术在聚乳酸膜表面引入自由氨基,再利用戊二醛将氨基转化为自由醛基,然后用壳聚糖涂层地方法,(IR),【英文摘要】Firstly,watersolubilityofthechitosanwasimprovedbymethoxypoly(ethyleneglycol)(mPEG)-3onthechitosanbackbone,b-shapedmethoxypoly(ethyleneglycol)graftedchitosan(CS-g-mPEG)-g-mPEGwascharacterizedbyinfraredspectroscopy(IR)icresonance(’H-NMR),andtheresultsshowedthatCS-g--solubleexperimentofthegraftcopolymershowedthatthesolubilityoftheCS-g-(PLA)wasintroducedtochitosan,andthegraftcopolymerofchitosan-g-polylactide(CS-g-PLA)essfullythroughringopeningpolymerizationbythehydroxylgroupofthechitosaninitiated,--,inthispaper