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 |
相關次數: | 點閱:359 下載:14 |
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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.
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