利用醋酸電漿處理聚乳酸-聚甘醇酸及不織布增進材料表面之細胞貼附性

Acetic Acid Plasma Treatment of PLGA and Nonwoven Fabric for Improving ES-Cell adhesion

錢瑞龍(Jui-long Chien)

指導教授 ： 陳克紹

大同大學/工程學院/材料工程學系所/碩士(2005年)

摘要

本研究係利用低溫電漿系統聚合薄膜來改善聚乳酸聚甘醇酸及聚丙烯不織布的缺點，使其更具有生醫應用性。首先利用Ar低溫電漿活化材料表面，之後再利用低溫電漿聚合醋酸薄膜於材料表面上，增進聚乳酸聚甘醇酸及聚丙烯不織布這兩樣多孔性材料表面細胞貼附性。由電子顯微鏡的觀察佐證，可以發現醋酸膜成功沉積在材料表面。而由紅外線光譜儀及電子能譜儀的數據可發現，材料表面在經過醋酸電漿膜的沉積後，出現許多官能機，例如，C-C at 1600 cm-1, C-O at 1125 cm-1, C-H at 1424 cm-1, –OH at 3050~3500 cm-1 and C=O at 1700~1720 cm-1.而由胚胎幹細胞培養實驗及組織切片的觀察得知，材料表面經醋酸電漿聚合沉積後，其細胞生長情形都明顯提升。而由親水性變化表示，材料在經醋酸電漿聚合沉積後，其親水性皆獲得明顯改善，在聚對苯二甲酸乙二醇酯(PET)上沉積醋酸膜後，表面水接觸角由67。下降到7。。不織布在經過醋酸電漿處理後也具有吸水性。而由衰退實驗結果發現材料表面親水性在經長時間放置後，仍具有相當的親水性，證明醋酸膜衰退表現並不明顯。而由生物相容性的實驗證明，材料在經過醋酸電漿處理後，會增進胚胎幹細胞在表面貼附及生長的表現，因此可期待利用醋酸電漿聚合處
理來增進材料的生醫特性。

關鍵字

聚乳酸聚甘醇酸 ； 醋酸 ； 電漿 ； 不織布 ； 幹細胞 ； 細胞貼附性

並列摘要

In this study , the polymer film of acetic acid deposited on the substrate such PP-nonwoven、 poly (lactide-co-glycolide)PLGA by plasma polymerization to improve the cell attachment . From the SEM micrographs, it demonstrated that acetic acid plasma film was successfully deposited onto PLGA scaffolds and PPnonwoven. From the FTIR spectrum it could be observed that there were several adsorption peak of acetic acid film appeared or enhanced such as C-C at 1600 cm-1, C-O at 1125 cm-1, C-H at 1424 cm-1, –OH at 3050~3500 cm-1 and C=O at 1700~1720 cm-1 were reduced. From the results of biopsy and cell adhesion, ES-cell adhesion and proliferate on the modification scaffolds is better than control. The results of water contact angle showed that the surface of acetic acid plasma treated materals were more hydrophilic. The water contact angle of PET film after acetic acid plasma treated was reduced (aap：67° to 7°). After long-term aging time, the PET film after acetic acid plasma treated still keep hydrophilic. In addition, the biocompatibility test demonstrated that ES stem cell may attach and proliferate on modified scaffolds, and it further reveals that acetic acid plasma coated is an effective treatment for improvement of
stem cell adhesion on different substrates.

並列關鍵字

acetic acid ； cell adhesion ； nonwoven ； plasma ； PLGA ； stem cell

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