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研究生： 鍾曜陽
Yao-Yang Jhong
論文名稱： 螺環原酸酯/壓克力樹脂互穿網狀複合材料之UV光聚合
UV curing of spiro orthoesters/dimethacrylate IPNs system
指導教授： 許應舉
Ying-Gev Hsu
口試委員: 劉興鑑
none
陳耿明
Keng-Ming Chen
學位類別： 碩士
Master
系所名稱： 工程學院 - 材料科學與工程系
Department of Materials Science and Engineering
論文出版年： 2005
畢業學年度： 93
語文別： 中文
論文頁數： 111
中文關鍵詞： 螺環原酸酯 、雙甲基丙烯酸基 、光起始劑 、互穿型網狀結構體
外文關鍵詞： Interpenetrating polymer network., Spiro orthoester, Dimethacrylate, Photoinitiator
相關次數： 點閱：237  下載：0 
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    • 本論文主要是研究含螺環原酸酯(spiro orthoester, SOE)基團之單體與Bis-GMA－TEGDMA等雙甲基丙烯酸基(dimethacrylate)之壓克力樹脂的混合物在光起始劑(photoinitiator)—DAI (diphenyliodonium hexafuorophosphate,λmax = 240-250nm)的存在下於UV波長254nm下照射進行光聚合反應，製備成互穿型網狀結構體之複合材料，並就其反應機制及材料特性作探討。以環氧化合物—烯丙基2,3-環氧丙基醚(allyl glycidyl ether, AGE)及DGEBA分別與己內酯(ε-caprolactone)與丁內酯(γ-butyrolactone)在三氟化硼(BF3•OEt2)的催化下製成SOE—2-allyloxymethyl-1,4,6-trioxaspiro[4,4]undecane (ATU)與2,2-Bis(1,4,6-trioxa-spiro-[4,4]-nonane-2-methyloxyphenyl)-propane (BTP)。SOE單體與壓克力樹脂混合物在DAI的催化下以UV光照射進行光聚合反應製備成semi-IPNs及IPNs的複合材料。在反應進行中，以FT-IR測定各個單體的轉換率，同時利用其他精密儀器－TGA與DSC研究Bis-GMA－TEGDMA－SOEs複合材料之抗收縮及熱效應等性質。

    Polymers with structures of interpenetrating networks (IPNs) have been synthetized by UV-induced polymerization of a mixtures of spiro orthoester (SOE) monomers and diacrylate (Bis-GMA-TEGDMA) , SOEs/diacrylate. The reaction mechanisms of the cationic/free radical polymerization of SOEs/diacrylate initiated by the photoinitiator, diphenyliodonium hexafuorophosphate (DAI, λmax=254nm), and the consumption of each monomer (degree of conversion) during reaction were investigated measured by FT-IR. As the SOE is an expanding monomer, it can be used as a low-profile additives to lower the shrinkage during curing of the diacrylate. Therefore, the volume shrinkage during curing and thermal property of IPNs composites (Bis-GMA-TEGDMA-SOEs) were examined in detail.

    中文摘要………………………………………………………………Ⅰ 英文摘要………………………………………………………………Ⅱ 致謝……………………………………………………………………Ⅲ 目錄……………………………………………………………………Ⅴ 附圖索引………………………………………………………………Ⅷ 附表索引………………………………………………………………XⅢ 一、前言………………………………………………………………1 二、文獻回顧…………………………………………………………3 2.1膨脹性單體的種類與發展………………………………………3 2.2牙科材料的歷史…………………………………………………6 2.3充填用複合材料的演變…………………………………………8 三、基本原理…………………………………………………………11 3.1 雙環單體之開環反應……………………………………………11 3.1.1 螺環原酸酯的反應機制………………………………………11 3.1.2 螺環原酸酯的開環反應………………………………………12 3.2樹脂聚合之作用機構……………………………………………15 3.3 雙甲基丙烯酸甲酯樹脂的聚合程度……………………………20 3.4光起始陽離子型聚合反應………………………………………22 3.5 互穿型高分子網狀結構體………………………………………25 四、實驗內容…………………………………………………………26 4.1 實驗藥品與儀器…………………………………………………26 4.2 儀器及設備………………………………………………………29 4.3 實驗流程…………………………………………………………30 4.4 實驗方法…………………………………………………………31 4.4.1 合成螺環原酸酯………………………………………………31 4.4.2 螺環原酸酯的開環聚合反應…………………………………34 4.4.3 螺環原酸酯聚合前與後的收縮率測試………………………34 4.4.4 製備Bis-GMA－TEGDMA－SOEs之複合樹脂試片………35 4.4.5 Bis-GMA－TEGDMA－SOEs之複合樹脂試片之轉化率…36 4.4.6 Bis-GMA－TEGDMA－SOEs之複合樹脂的收縮率測試…37 4.4.7 Bis-GMA－TEGDMA－SOEs之複合樹脂的熱重量分析測試……………………………………………………………38 4.4.8 Bis-GMA－TEGDMA－SOEs之複合樹脂的熱性質分析測試……………………………………………………………38 五、結果與討論………………………………………………………39 5.1 螺環原酸酯之結構分析…………………………………………39 5.2 螺環原酸酯的開環聚合反應……………………………………51 5.3 Bis-GMA/TEGDMA樹脂與SOEs單體的轉化率………………60 5.4 Bis-GMA/TEGDMA/SOEs之反應機構…………………………65 5.5 螺環原酸酯之收縮效應…………………………………………67 5.6 Bis-GMA/TEGDMA/SOEs之收縮效應…………………………67 5.7 Bis-GMA/TEGDMA/SOEs複合材料之熱性質分析……………77 5.7.1 TGA研討複合材料之熱性質…………………………………77 5.7.2 DSC研討複合材料之熱性質…………………………………83 六、結論……………………………………………………………85 七、參考文獻………………………………………………………88

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