论文标题
调查冷等离子体治疗对医用级聚氯乙烯的润湿性的影响
Investigation of the Impact of Cold Plasma Treatment on the Wettability of Medical Grade Polyvinylchloride
论文作者
论文摘要
研究了电晕,介电屏障放电和低压射频空气等离子体对医用级聚氯乙烯的润湿性的影响。电晕等离子体处理施加了聚氯乙烯的接亲量的最明显增加。报道了原始和血浆处理的PVC管的特定能量。探索了血浆处理后疏水恢复的动力学。指数拟合令人满意地描述了疏水恢复下明显接触角的时间演变。血浆处理导管的近表面层的化学成分的能量分散X射线光谱揭示了它们的氧化。疏水恢复的作用与聚合物表面的氧化几乎不相关,这是不可逆的。
The impact of the Corona, dielectric barrier discharge and low pressure radiofrequency air plasmas on the wettability of the medical grade polyvinylchloride was investigated. Corona plasma treatment exerted the most pronounced increase in the hydrophilization of polyvinylchloride. The specific energy of adhesion of the pristine and plasma treated PVC tubing is reported. The kinetics of hydrophobic recovery following the plasma treatment was explored. The time evolution of the apparent contact angle under the hydrophobic recovery is satisfactorily described by the exponential fitting. Energy-dispersive X-ray spectroscopy of the chemical composition of the near-surface layers of the plasma treated catheters revealed their oxidation. The effect of the hydrophobic recovery is hardly correlated with oxidation of the polymer surface, which is irreversible.