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題 名 | 小分子量聚左乳酸之摻合對結晶行為之影響及其電漿表面改質探討=Effect of Low-molecular Weight Blending and Plasma Treatment on the Crystalline and Surface Behavior of Poly-L-Lactide |
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作 者 | 李勝揚; 陳建中; 陳欽德; 吳仁傑; 趙文軒; 黃天恆; 曾厚; | 書刊名 | 化工資訊月刊 |
卷 期 | 15:6 2001.06[民90.06] |
頁 次 | 頁62-67 |
分類號 | 467 |
關鍵詞 | 小分子量聚左乳酸; 結晶行為; 電漿; |
語 文 | 中文(Chinese) |
中文摘要 | 目前所計畫之研究是希望能明瞭是否可用較低的分子量混合於較高的 分子量中,期能獲得較佳或維持原有大分子量的機械強度。其中本研究亦嘗試於 再於植體表面做電漿處理,鍍上具疏水基薄膜於PLLA材質的表質,利用其疏水 官能機來降低PLLA表面的親水度,期待減少PLLA表面水解速率在特定時間內維 持初期的機械強度。 |
英文摘要 | Polylactide polymers and their copolymers have attracted attentions in maxilla and mandible bone fracture areas, due to their biocompatibility, degradability in vitro and vivo and good mechanical properties. In the past two decades, lactide homo-and copolymers, and their polymer blends have been intensively studied because of their significantly high hydrolyzability in the human body as well as in natural circumstances. In this study, plasma resources such as O��,CF��, TMDS were applied to modify the surface properties of Poly-l- lactide with various molecurlar weights the purposes of reducing their hydrolysis rates as well as increasing adhesions with their bonding substrates. Additionally, the thermal behavior was studied to understand the interconnections of uniforming with thermally stressed materials. The studies of DSC are being focused to further understand their mechanism of crystals kinetic behavior applied in molding processing. The copolymer increased from the range 80 degree to above 90 degree. It suggested that the hydrolysis rate would be reduced. The DSC results also showed that PLLA blend of 50,000 and 170,000 (Molecular weight, Mv, even higher than 170,000) has higher crystallinity and hence better mechanical property. |
本系統中英文摘要資訊取自各篇刊載內容。