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研究生:吳鎮安
研究生(外文):C. A. Wu
論文名稱:Co或Zn之Sb2O3共觸媒合成PET之性質測試
論文名稱(外文):Property Analysis of PET Sythesized by Co- or Zn- Sb2O3 Co-catalyst
指導教授:萬本儒
指導教授(外文):B. Z. Wan
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:化學工程學研究所
學門:工程學門
學類:化學工程學類
論文種類:學術論文
論文出版年:1999
畢業學年度:87
語文別:中文
論文頁數:62
中文關鍵詞:聚對苯二甲酸二乙酯
外文關鍵詞:PETPolyethylene terephthalateKineticsThermal stabilityDEGCarboxylic acid
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本研究是以PTA法,由對苯二甲酸及乙二醇為原料,經酯化及聚合兩反應合成PET的性質測定。研究目標是探討銻鈷或銻鋅共觸媒合成PET聚合反應動力參數的估計、熱穩定性、羧酸末端基含量檢測、及二甘醇含量檢測。實驗結果,由極限黏度當基準時,二階聚合反應動力模式可以適切的描述PET聚合反應行為;400℃熱處理之銻鈷觸媒系統與300℃熱處理之銻鋅觸媒系統,二階聚合反應速率常數分別為傳統Sb2O3的1.5及3倍;不同熱處理程序之銻鋅或銻鈷共觸媒系統之聚合反應3小時樣品之熱穩定性與羧酸基含量與Sb2O3相差不大;在不同的觸媒統中,樣品DEG含量與熱穩性關聯性,銻鈷共觸媒系列其關聯性不大;而銻鋅共觸媒系列,除了Sb2O3外DEG含量越低熱穩定性越佳。

Poly(ethylene terephthalate) was synthesized from ethylene glycol、terephthalic acid through esterification and polycondensation reactions. Catalyst systems studied in this research included different heat-treated Sb/Zn or Sb/Co co-catalysts, and Sb2O3 catalyst.
The main objectives of this research are to estimate polycondensation reaction rate constant, and to determine the thermal stability of PET samples, and the side product concentrations in the samples. The result shows that the second order reaction kinetics can fit PET polycondensation reaction rate well. Polycondensation rate constant of PET in catalyst systems of Sb/Co calcined at 400℃ and Sb/Zn calcined at 300℃ are higher than that of Sb2O3 catalyst system by 1.5 and 3 times respectively. The thermal stability and caboxylic acid concentration in PET from different heat-treated co-catalyst system were about the same as those from Sb2O3 catalyst. Moreover, it is found that the relationship of thermal stability with DEG concentration in PET does not correlate well for Sb/Co co-catalyst system;for Sb/Zn co-catalyst system, the less the DEG concentration, the better the thermal stability.

第一章 緒論 1
1.1研究動機 1
1.2文獻回顧 3
1.2-1合成PET之製程 3
1.2-2合成PET之觸媒系統和反應機構5
1.2-3合成PET之副反應 10
1.3研究目標 13
第二章 實驗方法與原理 14
2.1樣品說明 14
2.2 PET黏度測試 15
2.3 PET熱穩定性分析 17
2.4 二甘醇(DEG)濃度的量測 17
2.5 羧酸末端基測定 19
第三章 結果與討論 21
3.1 PET聚合反應動力參數估計 21
3.1-1 黏度量測誤差分析 21
3.1-2 極限黏度量測 26
3.1-3 聚縮合反應動力參數估計 37
3.2 PET熱穩定分析 45
3.3羧酸末端基含量 49
3.4 DEG濃度的量測 51
第四章 結論 58
參考文獻 60

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