謝國煌臺灣大學：化學工程學研究所陳佳吟Chen, Chia-YinChia-YinChen2007-11-262018-06-282007-11-262018-06-282006http://ntur.lib.ntu.edu.tw//handle/246246/52215本研究利用二異氰酸鹽(diisocyanate)和甲基丙烯酸-2-羥基乙酯(2-hydroxyethyl methacrylate, HEMA)以2:1當量比反應，形成前驅物，以前驅物中剩下一當量的氰酸酯基與環氧丙烯酸酯(epoxy acrylate, EA)側鏈上的氫氧基反應，形成新多官能基壓克力單體。所選用的二異氰酸鹽為2,4-二異氰酸甲苯(toluene 2,4-diisocyanate, TDI)，六亞甲基二異氰酸鹽(1,6-diisocyanatohexane, HDI)和二異氰酸異佛爾酮(isophorone diisocyanate, IPDI)。藉由調整三種EA側鏈上的氫氧基和二異氰酸鹽的氰酸酯基莫耳比例，可得三種不同官能度的新多官能基壓克力單體。此親核反應會使得新單體的分子量變大，且產生較強的分子間氫鍵，因此黏度會增加。利用三丙稀乙二醇雙丙稀酸酯(tripropylene glycol diacrylate, TPGDA)的不同添加量可調整樹脂基質(matrix)的黏度。此新多官能基壓克力單體照光聚合後可形成交聯網狀結構，因此其聚合收縮應變量(polymerization shrinkage)較小。 在無機填料部份，本研究利用溶膠-凝膠法能有效合成均一粒徑二氧化矽膠體，並藉由調整以下之參數可得不同之粒徑大小：(1)反應溫度、(2)氨水濃度、(3)水對四乙氧基矽烷(tetraethoxysilane, TEOS)的莫耳比例(R值)和(4)四乙氧基矽烷的濃度。本研究利用此方法所合成之均一粒徑二氧化矽膠體的平均粒徑介於0.082到 1.16微米(μm)。甲基丙烯酸酯基三甲氧基矽(3-(trimethoxy silyl) propyl methacrylate, MSMA)可成功地對二氧化矽膠體表面進行改質，使其表面帶有壓克力官能基，以增進有機和無機相介面的相容性。傅立葉轉換紅外線光譜儀(FT-IR)、掃描式電子顯微鏡(SEM)和動態雷射光散射粒徑儀(DLS)為此判斷的依據。 以新多官能基壓克力單體、TPGDA、DL-樟腦醌(DL-camphoroquinone, CQ)、三級胺化合物以及市售之燻矽(fumed silica)或改質之二氧化矽膠體組成一可操作之均勻糊狀物，經可見光(λ=400-520nm)照射30秒後，即得產物。測試由新多官能基壓克力單體組成的複合或混成材料之聚合收縮程度(polymerization shrinkage)、硬度(hardness)、膨潤比(swelling ratio)和丙酮溶解度(acetone solubility)，以bis-GMA(bisphenol A glycerolate dimethacrylate)為樹脂基質之材料為對照組，並與已上市產品做一比較，藉此評估新多官能基壓克力單體和改質之二氧化矽膠體應用於牙科填補材料之可行性。在本研究中，燻矽的最大添加量為50wt%，而改質之二氧化矽膠體可添加至70wt%，因此使得材料的硬度大幅提升。改質之二氧化矽膠體和新多官能基壓克力單體所組成的混成材料之最大硬度為61.1Hv，可達商品化產品標準(Estilite的硬度為53.6Hv)，其聚合收縮程度比以bis-GMA為樹脂基質的混成材料減少4倍，且小於已上市產品Estilite 10倍。因此，多官能基壓克力單體和改質之二氧化矽膠體有應用於牙科修復材料之潛力。The novel multifunctional methacrylates were prepared by the reaction between the hydroxyl groups of the epoxy-acrylate resin (EA) and the isocyanate groups of the diisocyanate, such as toluene-2, 4-diisocyanate (TDI), 1,6-Diisocyanatohexane (HDI) or isophorone diisocyanate (IPDI) , which were pre-reacted with 2-hydroxyethyl- methacrylate (HEMA) with 2:1 equivalent ratio, and utilized as the dental monomers. By varying the molar ratios between the hydroxyl groups of EA and the isocyanate groups of diisocyanate, the methacrylaes with three types of different functionalities were obtained. As the reaction proceeded, the reaction underwent the nucleophilic addition and the stronger hydrogen bonding raised, resulted in the increase of molecular weights and viscosity. By adding the different amounts of tripropylene glycol diacrylate (TPGDA), the viscosity of the resin matrix could be reduced and adjusted. The mono-dispersed silica spheres were synthesized by the sol-gel process. By varying the reaction temperature, the concentration of ammonium hydroxide, the molar ratio of water to TEOS (R value), and the concentration of tetraethoxysilane (TEOS), the size of mono-dispersed silica spheres could be controlled. In this study, the size of silica spheres ranged from 0.082 to 1.16μm. The silica spheres were successfully modified by 3-(trimethoxy silyl) propyl methacrylate (MSMA), and the acrylate functional groups were chemically bonded to the surface of silica spheres, in order to enhance the compatibility of organic and inorganic interface. FT-IR, DLS and SEM were employed to characterize the modification of the silica spheres. The pastes were composed of the novel multifunctional methacrylate resin, TPGDA, DL-camphoroquinone (CQ), the compound of tertiary amine, and the modified silica spheres or fumed silica (digussa®202). After visible light curing (400-520nm) in 30sec, the hybrids or composites were formed. The shrinkage, hardness, swelling ratio and the acetone solubility of the hybrids or composites obtained from the multimethacrylate resins were analyzed. Those data obtained from the analysis of multimethacrylate-containing materials were compared with the control 2,2-bis[4-(2’-hydroxy-3’-methacryloyloxypropoxy)phenyl] propane (bis-GMA) based materials and the commercialized products in order to evaluate the application of the multimethacrylates as the dental resins and the modified mono-dispersed silica spheres as dental fillers. In this study, the maximum loading of fumed silica was 50wt%, but the modified mono-dispersed silica could reach 70wt%. Hence, the materials composed of modified mono-dispersed silica others than fumed silica could obtain the higher hardness. The maximum hardness of the hybrids composed of the modified mono-dispersed silica spheres and the multifunctional methacrylates was 61.1Hv which was higher than the Estilite (53.6Hv). And its shrinkage was much lower in comparison with the bis-GMA hybrids (lowered by about 4 times) and the commercialized products (lowered by about 10 times). Therefore, it is the potential dental restorative material.中文摘要I AbstractIII 目錄V 表索引X 圖索引XIII 代號解釋XX 第一章 緒論1 1-1 前言1 1-2 牙科材料發展之簡要歷史1 1-3 牙科修復材料所需具備條件3 1-4 研究目的4 第二章 文獻回顧與理論基礎6 2-1 牙科修復材料的分類與介紹6 2-2 光可硬化樹脂之聚合機制11 2-2-1 自由基鏈鎖反應機制11 2-2-2 光聚合反應14 2-2-3 減少聚合收縮之光可硬化樹脂16 2-3 溶膠-凝膠法19 2-3-1 溶膠-凝膠法簡介19 2-3-2 水解反應21 2-3-3 縮合反應22 2-3-4 均一粒徑二氧化矽粒子23 2-4 有機/無機混成(hybrid)材料25 2-4-1 以溶膠-凝膠法製備有機/無機混成(hybrid)材料之方26 2-4-2 溶膠-凝膠法製備有機/無機混成(hybrid)材料的優缺點27 第三章 實驗方法與原理28 3-1 實驗藥品28 3-2 實驗儀器32 3-3 實驗流程與步驟35 3-3-1 樹脂之製備35 3-3-1-1 TDI系統樹脂(TDI/HEMA/EA)之合成35 3-3-1-2 HDI系統樹脂(HDI/HEMA/EA)之合成36 3-3-1-3 IPDI系統樹脂(IPDI/HEMA/EA)之合成37 3-3-2 二氧化矽膠體粒子之製備37 3-3-3 牙科修復材料之製備38 3-4 材料之分析與測試38 3-4-1 傅立葉紅外線光譜(FT-IR)分析測試38 3-4-2 凝膠滲透色層分析儀(GPC)分析測試40 3-4-3 黏度(viscosity)分析測試40 3-4-4 聚合收縮(polymerization shrinkage)分析測試41 3-4-5 維克氏硬度(Vickers hardness tester)分析測試41 3-4-6 膨潤比(swelling ratio)與丙酮溶解度(acetone solubility)分析測試42 3-4-7 熱重損失分析儀( TGA )分析測試42 3-4-8 動態光散射雷射粒徑儀（DLS）分析測試43 3-4-9 掃瞄式電子顯微鏡(SEM)分析測試43 第四章 結果與討論44 4-1 TDI 系統樹脂(TDI/HEMA/EA)之合成探討及其與燻矽(fumed silica)混鍊後之複合樹脂性質討論44 4-1-1 傅立葉紅外線光譜(FT-IR)分析44 4-1-2 凝膠滲透色層分析(GPC)44 4-1-3 黏度(viscosity)分析45 4-1-4 光起始劑與聚合程度評估分析46 4-1-5 硬度(hardness)測試分析47 4-1-6 聚合收縮(polymerization shrinkage)測試分析48 4-2 均一粒徑二氧化矽小球之合成與討論49 4-3 TDI系統樹脂(TDI/HEMA/EA)與自行合成之二氧化矽小球之混成材料性質討論51 4-3-1 NtH2-80與不同粒徑之二氧化矽小球之混成材料性質討論51 4-3-1-1 外觀分析52 4-3-1-2 熱重損失(TGA)分析53 4-3-1-3 膨潤比(swelling ratio)及丙酮溶解度(acetone solubility)測試分析54 4-3-1-4 硬度(hardness)測試分析55 4-3-1-5 聚合收縮(polymerization shrinkage)測試分析56 4-3-2 NtH2-80與不同改質程度二氧化矽小球混成材料性質討論57 4-3-2-1 熱重損失(TGA)分析57 4-3-2-2 膨潤比(swelling ratio)及丙酮溶解度(acetone solubility)測試分析57 4-3-2-3 硬度(hardness)測試分析58 4-3-2-4 聚合收縮(polymerization shrinkage)測試分析58 4-3-3 TDI系統樹脂(TDI/HEMA/EA)與S3-1/4之混成材料性質討論58 4-3-3-1 膨潤比(swelling ratio)及丙酮溶解度(acetone solubility)測試分析58 4-3-3-2 硬度(hardness)測試分析59 4-3-3-3 聚合收縮(polymerization shrinkage)測試分析61 4-4 HDI系統樹脂(HDI/HEMA/EA)之合成探討及其與S3-1/4之混成材料性質討論62 4-4-1 傅立葉紅外線光譜(FT-IR)分析62 4-4-2 凝膠滲透色層分析(GPC)63 4-4-3 黏度(viscosity)分析64 4-4-4 硬度(hardness)測試分析64 4-4-5 膨潤比(swelling ratio)及丙酮溶解度(acetone solubility)測試分析65 4-4-6 聚合收縮(polymerization shrinkage)測試分析66 4-5 IPDI系統樹脂(IPDI/HEMA/EA)之合成探討及其與S3-1/4之混成材料性質討論69 4-5-1 傅立葉紅外線光譜(FT-IR)分析69 4-5-2 凝膠滲透色層分析(GPC) 70 4-5-3 黏度(viscosity)分析70 4-5-4 硬度(hardness)測試分析70 4-5-5 膨潤比(swelling ratio)及丙酮溶解度(acetone solubility)測試分析72 4-5-6 聚合收縮(polymerization shrinkage)測試分析73 4-6 三大系統之綜合討論74 4-6-1 樹脂黏度(viscosity)分析75 4-6-2 膨潤比(swelling ratio)及丙酮溶解度(acetone solubility)測試分析75 4-6-3 熱重損失(TGA)分析76 4-6-4 硬度(hardness)測試分析76 4-6-5 聚合收縮(polymerization shrinkage)測試分析77 第五章 結論78 第六章 參考文獻81 附錄873028858 bytesapplication/pdfen-US多官能基壓克力光聚合均一粒徑二氧化矽混成牙科修復聚合收縮multifunctionalacrylatephotocurablemono-dispersed silicahybridrestorativedentalshrinkage.thesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/52215/1/ntu-95-R93524011-1.pdf