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題 名 | The Study on Ultilizing Hydrophilic-Hydrophobic Microseparated Structure Copolymer as Biomedical Latex Membrane=使用具有親水﹣疏水性及微相分離構造的共聚物作為生醫用透析膜之研究 |
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作 者 | 薛敬和; 胡朝景; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷 期 | 16:1 1985.01[民74.01] |
頁 次 | 頁57-66 |
分類號 | 410.01344、410.01344 |
關鍵詞 | 生醫; 共聚物; 疏水性; 透析膜; 微相分離; 構造; 親水; |
語 文 | 英文(English) |
中文摘要 | 歷來用於人工腎臟之血液透析膜材料多以天然纖維素系材料為主,其缺點是機械強度、抗血栓性、以及中分子量毒性物質之透過性欠佳,尚待改進。本研究針對此乃利用硝酸銨鈰為起始劑,將疏水性單體丙烯腈及丙烯酸丁酯接枝於親水性之聚乙烯醇主鏈上,形成親水-疏水性之接枝共聚物,藉由其親水與疏水相間的平衡,而鑄得一兼具相當機械強度及溶質透過性之透析膜。本研究所製得之聚乙烯醇系膜,經與現行廣泛使用之纖維素系商品Cuprophan®比較,發現其溶質透過性相當,而機械強度則優於商品。研究中嘗試使用酸處理、熱處理及溶劑處理等不同製膜條件,以圖提高膜性能,發現處理後之透析膜在若干性能上更優於商品膜數倍。使用酸處理及熱處理雖不利於溶質透過性,却可增加膜強度;而以DMF、DMSO及其混合溶劑處理後,膜之機械強度略微降低,但其溶質透過性則提高二、三倍之多。此外,在血液凝固實驗中發現該聚合物膜之抗血栓性優於Cuprophan®,而由電子顯微鏡對膜所作的觀測中,也進一步說明了微相分離構造與抗血栓性之相關。這些,均足以證明PVA-g-AN-BA系乳膠膜,可期待其成為性能優良之醫用透析膜材料。 |
英文摘要 | Natural cellulosic material has been used extensively in the preparation of hemodialysis membranes for artifical kidneys. However, the mechanical strength of this kind of membranes is usually low and the membrane has low permeability for usea, uric acid, creatinine and toxins of medium molecular weights. Improvements are therefore required. In this study, ceric ammonium nitrate was used as initiator and a polymer membrane was prepared by grafting hydrophobic acrylonitrile and butylacrylate monomers onto a hydrophilic polyvinylalcohol backbone. By controlling the distribution of hydrophobic and hydrophilic phases within the polymer membrane, a membrane with improved solute permeabilities and mechanical strength could be prepared. A comparison was made between the PVA membrane prepared in our laboratory and a commercially available cellulose membrane, Cuprophan®. The PVA membrane showed compatible solute permeability and a mechanical strength better than the commercial product. Various acid treatment, heat treatment and solvent treatment were also carried out during the preparation of the membrane. It was discovered that with proper treatments, a membrane with improved properties could be produced. Acid treatment and heat treatment, for instance, while reducing solute permeability, could improve the mechanical strength of the membrane. Treatment with DMF, DMSO and their mixture, on the other hand, increased solute permeability of the membrane 2-3 times with only a slight reduction of its mechanical strength. Also, it was found through blood clotting experiments that the membrane had a higher degree of antithrombogenecity than Cuprophan®. Observations made on the membrane with electron microscopes further verified the relation between microphase separated structure and antithrombogenecity. In summary, with proper treatments, a PVA-AN-BA graft latex membrane with superior physical properties can be prepared. The membrane is expected to be an outstanding material for dialysis in the medical field. |
本系統中英文摘要資訊取自各篇刊載內容。