殼聚糖與丙烯酸接枝共聚反應(yīng)的研究

頁(yè)數(shù) 34 字?jǐn)?shù) 15907 附開題報(bào)告

摘要：
本文研究了殼聚糖和丙烯酸單體在不同反應(yīng)條件下的接枝共聚反應(yīng)，并通過正交試驗(yàn)設(shè)計(jì)法找出一組最優(yōu)反應(yīng)工藝條件。并討論了溫度、時(shí)間、單體質(zhì)量比及引發(fā)劑濃度對(duì)接枝共聚反應(yīng)的影響。本文還利用紅外光譜分析法對(duì)殼聚糖的結(jié)構(gòu)進(jìn)行了表征。

關(guān)鍵詞：殼聚糖,接枝共聚反應(yīng),丙烯酸,正交試驗(yàn)設(shè)計(jì)法

Abstract：
This article investigateed the graft copolymerization of acrylic acid onto chitosan under different reaction conditions ,and found the best technical condition of graft copolymerization by using the orthogonality experimental design method. In addition,the different effect of reaction temperature ，time,monomer quality ratio and initiator concentration on grafting percentage and grafting efficiency was also discussed. At last, the dissolution capability of the graft copolymer was tested in different impregnant. The graft copolymer was also characterized by IR.
Keywards: chitosan; graft copolymerization; acrylic acid; orthogonality
experimental design method
目錄
關(guān)鍵詞：殼聚糖；接枝共聚反應(yīng)；丙烯酸；正交試驗(yàn)設(shè)計(jì)法 0
The Research of The Graft Copolymerization of 0
Acrylic Acid onto Chitosan 0
引言 1
1．殼聚糖的簡(jiǎn)介和發(fā)展概況殼聚糖 1
1．1殼聚糖簡(jiǎn)介[1-6] 1
1．1．1殼聚糖的制備方法[7] 2
1．1．2殼聚糖的化學(xué)性質(zhì)[8-12] 2
1．1．3殼聚糖的生物學(xué)性質(zhì) 4
1．2殼聚糖的發(fā)展概況及應(yīng)用[7] 5
1．2．1殼聚糖的發(fā)展概況 5
1．2．2殼聚糖的應(yīng)用 5
2．接枝共聚反應(yīng)[17-18] 6
3．正交試驗(yàn)設(shè)計(jì)方法[19] 7
4．實(shí)驗(yàn)部分 8
4．1原料及試劑 8
4．2實(shí)驗(yàn)儀器及器皿 8
4．3本實(shí)驗(yàn)的反應(yīng)機(jī)理 8
4．4聚合反應(yīng)實(shí)施方法的選擇[20-21] 9
4．5引發(fā)劑的選擇 9
4．6實(shí)驗(yàn)過程 10
4．6．1前期工作準(zhǔn)備 10
4．6．2殼聚糖接枝丙烯酸接枝共聚物的制備過程 10
4．6．3殼聚糖與丙烯酸接枝共聚物的分離及提純[22-24] 10
4．6．4各個(gè)反應(yīng)條件對(duì)接枝共聚反應(yīng)的影響 10
5．結(jié)果和分析 12
5．1紅外光譜分析 12
對(duì)殼聚糖和殼聚糖接枝丙烯酸共聚物進(jìn)行紅外光譜分析，得到圖5.1、圖5.2分別為殼聚糖的紅外光譜圖，殼聚糖接枝丙烯酸共聚物的紅外光譜圖，如圖所示： 12
5．2接枝率和接枝效率的計(jì)算 13
5．3各個(gè)反應(yīng)條件對(duì)接枝共聚反應(yīng)的影響的討論 15
5．3．1反應(yīng)時(shí)間對(duì)接枝共聚反應(yīng)的影響 15
以表4.1中的時(shí)間為橫坐標(biāo)，接枝率和接枝效率分別為縱坐標(biāo)繪制反應(yīng)時(shí)間對(duì)接枝率和接枝效率的關(guān)系曲線如圖5.1所示： 15
5．3．2反應(yīng)溫度對(duì)接枝共聚反應(yīng)的影響 15
5．3．3單體質(zhì)量比對(duì)接枝共聚反應(yīng)的影響 16
5．3．4引發(fā)劑濃度對(duì)接枝共聚反應(yīng)的影響 17
6．結(jié)論 17
參考文獻(xiàn) 18
致 謝 19
附錄 20
開題報(bào)告 20
中期報(bào)告 22
英文資料翻譯 23
英文原文 32

參考文獻(xiàn)
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[2]陶薇薇,李兆龍.化工物質(zhì).1990,(3):24～29
[3]P.Roy-Chowdhury.et al.J.Appl Polym.Sci.1984,29:153
[4]王偉,徐德.化學(xué)學(xué)報(bào).1994,52(3):243～247
[5]許崇泉等,化學(xué)與粘合.1990,(2):63～65
[6]R.Muzzarelli.Chitin in Nature and Technology IN:proceedings of the Third