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研究生: 葉怡杏
Yi-hsing Yeh
論文名稱: 新穎聚矽氧烷水膠材料之開發及其在隱形眼鏡之應用
Novel silicon hydrogel based on PDMS-polyurethane-HEMA for contact lens application
指導教授: 楊銘乾
Ming-chienYan
口試委員: 邱顯堂
none
王大銘
Da-ming Wang
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: 2009
畢業學年度: 97
語文別: 中文
論文頁數: 88
中文關鍵詞: PDMS-PU預聚物HEMA親水性矽水膠隱形眼鏡
外文關鍵詞: PDMS-PU macromer, hydrophilicity silicone hydrogel, ophthalmic application
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本研究利用PDMS-diol為軟鏈段,IPDI為硬鏈段與PEGMA為鏈延長劑來合成聚矽氧烷水膠 (PDMS-PU-PEGMA),最後加入HEMA,利用光聚合(copolymerizaed)的方式合成水膠(PDMS-PU-HEMA),以提高水膠之親水性。由實驗結果可知,其含水率隨著HEMA的增加而上升,而接觸角也因HEMA的加入而降低,因而提高水膠的親水性,然而透氧率(oxygen permeability,Dk )則相對地降低,但降低的量並不大,而透光率也有些微地降低。在機械強力(mechanical strength)及楊氏係數(Young’s modulus)方面會隨著HEMA的增加而有增加的趨勢。而在蛋白質吸附試驗中,我們利用BCA 蛋白質測定方法來探討,結果顯示HEMA上由於親水性的影響吸附些微的lysozyme。在細胞毒性方面,以ISO10993-5的判定上屬於0-1 級,所以其細胞毒性是通過標準的。針對這些特性,未來可以利用此水膠來作為長戴型的隱形眼鏡及眼科材料之運用


A novel hydrogel based on the block copolymer of polydimethylsiloxane-polyurethane (PDMS-PU) and 2-hydroxyethyl methacrylate (HEMA) was synthesized. This novel hydrogel was consisting of soft segment of poly(dimethylsiloxane) dialkanol with hydroxyethyl propoxy end groups and hard segment of isophorone diisocyanate (IPDI). Poly(ethylene glycol) methacrylate (PEGMA) was added as the chain-extender. Finally, by reacting silicone macromer (PDMS-PU) with HEMA under UV-photopolymerization, the copolymer was resulted (PDMS-PU-HEMA). The results showed that the water content of the hydrogel increased with the HEMA content. The Young’s modulus and tensile strength of the dry hydrogel also increased with HEMA content. At a HEMA content of 40%, the oxygen permeability (Dk) would remain 77% of that of the PDMS-PU. The optical transmittance of the PDMS-PU-HEMA hydrogel remained 94% of that of PDMS-PU. Furthermore, these hydrogels were non-cytotoxic through in vitro L929 fibroblasts assay. Overall results demonstrated that the PDMS-PU-HEMA hydrogel exhibited relatively high oxygen permeability, hydrophilicity, and optical transparency, therefore would be applicable as an ophthalmic material.

目錄 中文摘要 I 英文摘要 II 誌謝 III 目錄 IV 圖索引 VI 表索引 VII 第一章 緒論 1 1-1 研究背景 1 1-2 研究目的 2 第二章 文獻回顧 4 2-1 水膠的定義 4 2-2 水膠之分類 5 2-3 功能性水膠 7 2-4 隱形眼鏡的介紹 11 2-5 隱形眼鏡的分類 15 2-6 隱形眼鏡材料的特殊性質 20 2-7 隱形眼鏡之蛋白質吸附 25 2-8 反應型矽酮寡聚物 (Hydroxyl-terminated polydimethylsiloxane,PDMS-diol) 28 2-9 異佛爾酮二異氰酸酯(Isophorone diisocyanate,IPDI) 29 2-10 紫外光硬化交聯原理 30 第三章 實驗材料與方法 32 3-1 實驗項目流程圖 32 3-2 實驗原理 33 3-3 實驗材料 34 3-4 實驗設備 36 3-5 實驗步驟 37 3-6 平衡含水量(Equilibrium water content)的測試 39 3-7 UV可見光的測定 39 3-8 熱重分析(Thermogravimetric Analysis) 39 3-9 FTIR之光譜鑑定 40 3-10 透氧係數測定 40 3-11 接觸角測試(Contact angle measurement) 41 3-12 強力試驗 42 3-13 原子力顯微鏡(AFM) 43 3-14 蛋白質吸附實驗 44 3-15 細胞毒性 45 3-16 細胞增生 48 第四章 結果與討論 50 4-1 PDMS-PU-HEMA水膠之合成 50 4-2 FTIR官能基分析 52 4-3 TGA熱重量分析 55 4-4 機械強度 57 4-5 透光率測試 60 4-6 含水率測試 62 4-7 透氧率測試 64 4-8 AFM表面粗糙度 69 4-9 接觸角測試 72 4-10 蛋白質吸附 74 4-11 細胞毒性 76 4-12 細胞增生性 78 第五章 結論 80 第六章 參考文獻 83 作者簡介 88 圖索引 Figure 2-1 水膠交鏈方式 5 Figure 2-2 pH敏感性水膠於不同pH 下之變化 8 Figure 2-3 溫度敏感型高分子poly( NIPAAM )於高低溫下之結構變化 9 Figure 2-4 光敏感性高分子之結構 10 Figure 2-5 典型隱形眼鏡結構和名稱 14 Figure 2-6 聚甲基丙烯酸甲酯結構 16 Figure 2-7 矽氧烷甲基丙烯酸酯共聚物 16 Figure 2-8 PHEMA之結構 17 Figure 2-9 水膠之水合作用 20 Figure 2-10 淚液沉澱物與鏡片之作用 21 Figure 2-11 淚液膜之位置 25 Figure 2-12 IPDI結構式 30 Figure 2-13 PDMS-diol結構式 30 Figure 2-14 光起始劑衍生物 31 Figure 3-1 接觸角之原理圖 41 Figure 3-2 BCA 測試方法之步驟 44 Figure 4-1 PDMS-PU-HEMA水膠合成之FTIR分析圖 53 Figure 4-2 不同HEMA比例之水膠之FTIR分析圖 54 Figure 4-3 PDMS-PU-HEMA水膠之TGA熱分析圖 56 Figure 4-4 PDMS-PU-HEMA水膠之應力應變圖 58 Figure 4-5 PDMS-PU-HEMA水膠之最大應力及楊氏係數 59 Figure 4-6 PDMS-PU-HEMA水膠之透光度 61 Figure 4-7 PDMS-PU-HEMA水膠之含水率 63 Figure 4-8 PDMS-PU-HEMA之透氧率(Dk) 65 Figure 4-9 AFM表面結構圖(A)P12H1(B)P12H2(C)P12H6(D)P12H8 70 Figure 4-10 PDMS-PU-HEMA水膠之表面粗糙度值 71 Figure 4-11 PDMS-PU-HEMA之接觸角測試 73 Figure 4-12 PDMS-PU-HEMA水膠之蛋白質吸附 75 Figure 4-13 細胞毒性測試:(A)試劑對照組(Blank)、(B) P12H1、(C) P12H4、(D) P12H8 77 Figure 4-14 PDMS-PU-HEMA水膠之細胞增生性 79 表索引 Table 2-1 隱形眼鏡常用的材料單體與其特徵 14 Table 2-2 淚液膜(tear film)之組成與濃度 27 Table 3-1 主要的官能基吸收峰位置表 40 Table 4-1 PDMS-PU-HEMA水膠之組成比例與產率 51 Table 4-2 PDMS-PU-HEMA水膠與市面上隱形眼鏡之比較 68

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