異丁基乙烯基醚-馬來酸酐共聚物合成及表征

化工論文編號:HG069  論文字數:10519,頁數:27

目錄

中文摘要...........................................................Ⅰ
Abstract............................................................Ⅱ
目錄.............................................................. Ⅲ
1 緒論 1
1.1 相關研究進展 1
1.2 實驗內容、目的及其意義 2
1.3溶液聚合制備馬來酸酐-烷基乙烯基醚共聚物 3
1.4 本體聚合合成馬來酸酐-烷基乙烯基醚共聚物 5
1.5 共聚物的改性 7
1.6 本章小結 7
2 實驗部分 8
2.1 實驗原料和試劑 8
2.2 實驗儀器和裝置 8
2.3 馬來酸酐-異丁基乙烯基醚共聚物的合成 9
2.4 表征 10
3 結果與討論 12
3.1 反應溫度對產物性狀的影響和引發劑的選擇 12
3.2動力學研究 12
3.3 溶劑的選擇 14
3.4 溶劑比的選擇 15
3.5 加料方式的選擇 16
3.5 共聚物的結構性能與表征 16
4 結論 21
致 謝 22
參考文獻 23

摘 要：采用溶液自由基共聚合方法，合成了異丁基乙烯基醚(IBVE)與馬來酸酐(MA)交替共聚物(PIBVEMA)。研究了溶劑種類、溶劑比、聚合溫度、反應時間、加料方式等因素對共聚產品收率及產品特性黏度的影響。將馬來酸酐和異丁基乙烯基醚混和物溶解在乙酸乙烯酯中，滴加入57℃下的環己烷(含引發劑EHP)中，合成得到異丁基乙烯基醚和馬來酸酐的交替共聚物，產率在90%以上。并通過傅立葉變換紅外色譜儀(FTIR)和超導核磁共振儀(NMR)表征了共聚物的結構。用烏氏黏度計測定了聚合物的黏度。結果表明，實驗所得產品正是異丁基乙烯基醚－馬來酸酐交替共聚物。

關鍵詞：異丁基乙烯基醚；馬來酸酐；交替共聚 ；溶液自由基聚合
 
Synthesis and Characterization of Copolymer of Isobutyl
Vinyl Ether and Maleic Anhydride

Abstract: The alternate copolymer of isobutyl vinyl ether and maleic anhydride (PIBVEMA) was synthesized by using solution radical copolymerization. A series of copolymers of isobutyl vinyl ether (IBVE) and maleic anhydride (MA) were prepared in solvents of vastly different property. The effects of solvent , colymerization temperature and polymerization time on the yield and specific viscosity of the copolymer were investigated .Meleic anhydride and isobutyl vinyl ether are dissolved in vinyl acetate，PIBVEMA was synthesized by dripping this solution into 57℃ cyclohexane and the product’s yield is over 90% .The structure of the copolymer was characterized by FTIR and 13C-NMR and the specific viscosity was determined by viscosimeter . Finally, the experiments results show that the products we’ve  produced is the alternate copolymer of isobutyl vinyl ether and maleic anhydride (PIBVEMA) .

 Key words:   isobutyl vinyl ether;   maleic  anhydride ;   alternating copolymerization ;   solution radical polymerization