铝合金表面微波等离子体类聚乙二醇涂层的亲水性研究  

Synthesis of PEG- Like Coatings on Aluminum Alloys by MW-Plasma and Its Hydrophilicity

作　　者：杨隽 汪建华[2] 

机构地区：[1]中国科学院等离子体物理研究所,安徽合肥230031 [2]武汉化工学院材料科学与工程学院,湖北武汉430073

出　　处：《材料保护》2004年第6期1-3,共3页Materials Protection

基　　金：国家自然科学基金资助 (5 0 2 740 65 )

摘　　要：通过对铝合金低温微波等离子体表面改性 ,增强其亲水性 ,减少铝离子扩散 ,降低生物学毒性 ,可提高铝合金的生物相容性。采用三乙二醇二甲醚有机试剂 ,于电子回旋共振低温微波等离子体条件下 ,在铝合金表面进行沉积对其改性 ,对所得涂层用X射线光电子能谱、衰减全反射红外光谱和水接触角进行分析表征 ,以判断表面沉积物的组成及亲水性变化 ,评价低温微波等离子体处理对提高铝合金亲水性的机理及作用。结果表明 ,铝合金经三乙二醇二甲醚低温微波等离子体改性后 ,表面得到一层均匀、致密的涂层 ,其化学组成为类聚乙二醇结构 ,表面主要聚集有大量的碳氢和碳氧极性键 ;与改性前相比 ,等离子体涂装的铝合金表面接触角大大下降。低温微波等离子体表面改性能显著提高铝合金表面的亲水性。Aluminum alloys were modified by microwave cold-plasma surface technique to enhance its hydrophilicity and reduce Al^(3+) dissolution resulted in toxicity, so as to improve its biocompatibility. A coating was deposited on aluminum alloy surface under the condition of electron cyclotron resonance microwave cold- plasma with triethylene glycol dimethyl ether. The coatings were investigated by XPS, ATR-FrlR and water contact characterize analysis to evaluate the deposition constitutes and the varieties of hydrophilicity, as well as the mechanism. Results demonstrate that the modified coating on the aluminum alloy is uniform and closed, which composed of PEG- like structures with carbon-hydrogen and carbon-oxygen polarity linkages on the surface mainly. The contact angle of plasma- treated surface is significantly reduced and the hydrophilicity is better than the unmodified surfaces.

关 键 词：表面处理 等离子体涂层 铝合金 类聚乙二醇 亲水性 

分 类 号：TG174[金属学及工艺—金属表面处理]