研究生: |
許銘晉 Ming-Chin Hsu |
---|---|
論文名稱: |
以1,6-己二醇二丙烯酸酯/偶氮二異丁腈製備微凝膠之自由基聚合動力學 Free Radical polymerization kinetics of 1,6-hexanediol diacrylate / Azobisisobutyronitrile based microgel particles |
指導教授: |
陳崇賢
Chorng-Shyan Chern |
口試委員: |
黃延吉
Yan-Jyi Huang 許榮木 Jung-Mu Hsu |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 化學工程系 Department of Chemical Engineering |
論文出版年: | 2015 |
畢業學年度: | 103 |
語文別: | 中文 |
論文頁數: | 92 |
中文關鍵詞: | 迷你乳化 、高分子 、微凝膠 、自由基聚合 、動力學 |
外文關鍵詞: | miniemulsion, polymer, microgel, free radical polymerization, kinetics |
相關次數: | 點閱:219 下載:2 |
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本研究利用示差掃瞄熱分析儀DSC探討1,6-己二醇二丙烯酸酯(1,6-hexanediol diacrylate ,HDDA) /偶氮二異丁腈(Azobisisobutyronitrile, AIBN)之恆溫自由基聚合動力學。利用迷你乳化聚合法以及溶劑如N-甲基咯烷酮(1-Methyl-2-pyrrolidone , NMP)及甲苯(Toluene)之溶液聚合法進行反應。
由DSC之恆溫動力學數據可得知迷你乳化聚合之活化能大於溶液聚合(NMP、甲苯),且成核模型(Avrami–Erofeyev)最適合描述迷你乳化聚合以及溶液聚合反應。微凝膠的成核及核成長主要發生在成長反應階段。
研究迷你乳化反應及溶液聚合(NMP)所製備之高分子,進行非恆溫之熱裂解實驗,由兩種方式所製備之高分子熱穩定性相似。並利用模型自由法(Model-free method)來求出熱裂解程序之活化能。
Isothermal radical polymerization kinetics of 1,6-hexanediol (HDDA)/azobisisobutyronitrile (AIBN) were investigated by using a differential scanning calorimeter (DSC). Miniemulsion polymerization and polymerization in the presence of solvent such as N-methyl-2-pyrrolidone (NMP) and toluene were carried out.
The DSC data showed that the activation energy of the miniemulsion polymerization is much higher than that of polymerization in NMP (or toluene). The reaction mechanisms for miniemulsion polymerization and solution polymerization involving nucleation (Avrami–Erofeyev) were proposed.The nucleation and subsequent growth of microgel nuclei were primarily governed by the propagation reaction.
Non-isothermal degradation of resulting polymers obtained from miniemulsion polymerization and polymerization in NMP were studied. The thermal stability of the resulting polymers is similar. Model-free method (isoconversional) was used to determine the activation energy of thermal degradation.
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20. Kinetic and structural studies of the polymerization of N,N-bismaleimide-4,4-diphenylmethane with barbituric acid Heng-Lei Su1, Jung-Mu Hsu2, Jing-Pin Pan2, Tsung-Hsiung Wang2, Fu-En Yu1 andChorng-Shyan Chern1,*
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