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題 名 | 聚偏二氯乙烯初期熱脫氯化氫反應之動力研究 |
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作 者 | 何宗漢; | 書刊名 | 技術學刊 |
卷 期 | 6:1 1991.03[民80.03] |
頁 次 | 頁83-88 |
分類號 | 467.42 |
關鍵詞 | 二氯乙烯; 反應; 動力; 氯化氫; 聚偏; 熱脫; |
語 文 | 中文(Chinese) |
中文摘要 | 本文主要是以恒溫的熱重法,研究乳化聚合的聚偏二氯乙烯(PVDC)在不同氧含量之環境氣體下,熱脫氯化氫反應至轉化率為2%之動力學。實驗結果顯示:PVDC初期脫氯化氫反應速率與黏度平均分子量、環境氣體的含氧量及溫度有關。不同氧含量環境氣體下的脫氯化氫產物,由IR光譜分析顯示不同的結構變化。初期脫氯化氫反應在不同氧含量環境氣體下均為視零階反應,且遵守Arrhenius關係式,得到在氮氣、空氣及氧氣下之視活化能約為33.3Kcal/mol。 |
英文摘要 | The kinetics on the early stage of thermal dehydrochlorination of emulsion-polymerized poly (vinylidene chloride) (PVDC) up to a conversion of 2% were studied by means of thermogravimetric analysis at different oxygen contents of atmosphere. The results showed that the rate of thermal dehydrochlorination depends on intrinsic viscosity-molecular weight, oxygen contents of atmosphere and thermal degradation temperature. (The IR spectra for PVDC and its dehydrochlorination products at different oxygen contents of atmosphere confirmed the differences in the structures.) Ap-parent zero-order kinetics were observed in the thermal dehydrochlorina-tion of PVDC at different oxygen contents of atmosphere. The apparent activation energy of thermal dehydrochlorination of PVDC at different oxygen contents of atmosphere obtained by Arrhenius plots were about 33.3 kcal/mol. |
本系統中英文摘要資訊取自各篇刊載內容。