为了改善硬组织修复用三维编织碳纤维增强聚醚醚酮(3D C/PEEK)复合材料的生物活性,采用空气等离子体处理技术对其进行表面预处理,随后浸入1.5倍模拟体液(SBF)中进行仿生沉积,研究了等离子体处理时间对表面形貌、亲水性、表面化学态以及仿生沉积效果的影响.结果表明,随着等离子体处理时间的延长,3DC/PEEK复合材料表面粗糙度增加,表面亲水性得到明显改善,同时表面极性官能团数量增加.经过等离子处理后的3D C/PEEK复合材料试样浸入1.5倍SBF中7天后,两种处理时间的复合材料表面均有沉积层生成,且经过120 s处理的复合材料表面沉积层更加致密均匀,EDS分析证实沉积层为钙磷化合物.
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