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研究生: 林宛韻
Wan-Yun Lin
論文名稱: 雙馬來醯亞胺/巴比妥酸之反應動力學研究
Reaction Kinetics for Bismaleimide and Barbituric Acid
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 Shu
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: 2013
畢業學年度: 101
語文別: 中文
論文頁數: 111
中文關鍵詞: 雙馬來醯亞胺巴比妥酸溶劑效應麥克加成反應
外文關鍵詞: Bismaleimide, Barbituric Acid, Solvent effect, Michael addition reaction
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  •   本研究主要研究在不同鹼性溶劑下,使用雙馬來醯亞胺(N,N’-bismaleimide-4,4-diphenylmethane, BMI)與巴比妥酸(Barbituric acid, BTA)進行聚合反應之反應動力學,此反應同時存在麥克加成反應(Michael addition)以及自由基加成反應(Free radical addition)兩種反應機制,由文獻得知足量之對苯二酚(Hydroquinone, HQ)將可有效抑制自由基加成反應。利用此系統再針對不同非質子極性溶劑,令BMI/BTA莫爾比為2:1(固含量:20.46%),使麥克加成反應作為主反應,進行反應動學之研究。
      使用微分式掃描熱量分析儀(DSC)與核磁共振儀(NMR),在383K∼423K得到此麥克加成反應之反應動力學數據,將實驗所得數據利用Matlab數學軟體分析麥克加成之推倒公式,模擬出之kM再利用Arrhenius方程式計算BMI/BTA麥克加成反應之活化能Ea,不同溶劑Ea大小順序為NMP (46.12 kJ mole-1)<DMAC (49.51 kJ mole-1)<DMF (56.96 kJ mole-1)。
      另外使用1,3–二甲基巴比妥酸(1,3-BTA)與BTA在DMAC溶劑反應做比較,最後實驗所得之kM數據,在383K∼423K 之kM為1,3-BTA是BTA的兩倍,也就是麥克加成反應速率可以表示為RM = 2 RM,CH。


      This work studird the effect of solvent basicity on the kinetics of N,N’-bismaleimide-4,4-diphenylmethane (BMI) polymerization with Barbituric acid (BTA). This reaction was governed by the competitive Michael addition reaction and free radical addition. Addition of sufficient Hydroquinone (HQ) was used to completely inhibit the free radical polymerization. The system of BMI/BTA = 2/1 (mol/mol) (solid content : 20.46%) was chosen to study the kinetics of Michael addition polymerizations in different aprotic polar solvents.
      Using DSC and NMR at 383K~423K to obtain the Michael addition reaction kinetic data, then analyzed the data in combinatiob with Michael addition reaction model by Matlab. The activation energy thus obtained in increasing order is NMP (46.12 kJ mole-1)<DMAC (49.51 kJ mole-1)<DMF (56.96 kJ mole-1).
      In addition, kM values determined for 1,3-BTA and BTA at 383K~ 423K in the DMAC show that the value of kM for 1,3-BTA was twice that of BTA, indicating RM = 2 RM,CH.

    摘要.................................................................I 目錄.................................................................IV 圖目錄.....................................................................VIII 表目錄.................................................................XII 符號說明.................................................................XIV 第一章 緒論.................................................................1 1.1 雙醯亞胺高分子(Bismaleimide)................................1 1.2 巴比妥酸(Barbituric acid)..........................................2 1.3 溶劑效應.................................................................3 1.4 研究動機.................................................................4 第二章 文獻回顧..............................................................6 2.1 雙馬來醯亞胺加成反應類.......................................6 2.1.1 麥克加成反應(Michael addition)...........................6 2.1.1.1 麥克加成反應介紹…..................................6 2.1.1.2 反應機制…...............................................7 2.1.2 自由基加成反應(Free radical addition)..................10 2.1.1.1 麥克加成反應介紹….................................10 2.1.1.2 反應機制….............................................10 2.2 巴比妥酸及其衍生物.......................................12 2.2.1 巴比妥酸........................................................12 2.2.2 巴比妥酸互變異構與氫鍵..................................13 2.2.3 巴比妥酸衍生物..............................................15 2.3 對苯二酚(Hydroquinone, HQ)....................................16 2.4 溶劑效應對有機反應影響....................................18 2.4.1 介電常數........................................................19 2.4.2 質子親和力.....................................................20 第三章 實驗藥品、儀器與步驟...............................................22 3.1 實驗藥品...............................................................22 3.2 使用儀器...............................................................27 3.3 實驗內容...............................................................28 3.3.1 DSC樣品配置.................................................28 3.3.1.1  BMI/BTA/HQ/Solvent樣品配置...............28 3.3.1.1  BTA/HQ/Solvent樣品配置.......................28 3.3.2 抑制自由基反應實驗設置.................................29 3.3.3 麥克加成反應.................................................29 3.3.3.1  BTA活性氫消耗之反應動力學分析...........29 3.3.3.2 BTA活性氫消耗之反應後剩餘量測定.......30 3.3.3.3 反應轉化率之動力學計算..........................31 3.3.4  BMI/BTA聚合反應之動力學模式建立...............32 第四章 結果與討論...................................................38 4.1 Sample體積莫爾濃度..............................................38 4.2 抑制BMI/BTA聚合反應之自由基加成反應..................40 4.3 麥克加成(Michael addition)反應:BMI羰基雙鍵與BTA活性氫消耗之反應過程.....41 4.4 麥克加成(Michael addition)反應:轉化率反應動力學.......................47 4.5 麥克加成(Michael addition)反應:BTA活性氫濃度消耗過程................50 4.6 麥克加成(Michael addition)反應:反應動力學推導公式模擬建立與分析.......58 4.7 麥克加成(Michael addition)反應:反應動力學反應速率常數及活化能探討.....73 4.8 活化能與質子親和力關係..........................................82 4.9 麥克加成(Michael addition)反應:Block BTA在DMAC溶劑系統反應關係......83 4.9.1 Sample體積莫爾濃度.................................83 4.9.2 BMI羰基雙鍵與Block BTA活性氫消耗之反應過程與轉化率................84 4.9.3 1,3-BTA活性氫濃度消耗過程......................88 4.9.4 反應動力學推導公式模擬建立與分析.............92 4.9.5 反應動力學反應速率常數及活化能探討..........98 第五章 結論....................................................105 參考文獻.....................................................107

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