邱文英2006-07-252018-06-282006-07-252018-06-281999http://ntur.lib.ntu.edu.tw//handle/246246/12352本實驗利用硝酸銨鈰起始幾丁質與醋酸乙烯酯之分散相聚合反應。以丙酮純化聚合反應產物後，計算不同反應條件下， 接枝共聚合體的接枝比值及接枝效率，並利用穿透式電子顯微鏡及掃瞄式電子顯微鏡來觀察接枝共聚合物之形態。實驗結果 顯示，反應初期傾向於在幾丁質上進行接枝反應，接枝比值與接枝效率均會上升，當接枝量達到一定值時，反應會開始傾向 於醋酸乙烯酯單體的乳化聚合反應，使得接枝比值只能達到一定值，接枝效率也因而開始下降。Graft polymerization of vinyl acetate onto chitin was carried out with a redox initiator, cerium ammonium nitrate. The grafting ratio and grafting efficiency thus were calculated from the weight balance. Experimental results indicated that at initial stage of reaction, GR and GE both increased with time. After that, GR reached a constant value, yet GE started to decrease.application/pdf251617 bytesapplication/pdfzh-TW國立臺灣大學材料科學與工程學研究所接枝共聚合體幾丁質醋酸乙烯酯硝酸銨鈰分散聚合graft copolymerchitinvinyl acetatecerium ammonium nitratereporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/12352/1/882216E002039.pdf