Paosawatyanyong B, Kamlangkla K, Hodak S K
Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
J Nanosci Nanotechnol. 2010 Nov;10(11):7050-4. doi: 10.1166/jnn.2010.2849.
Polyethylene terephthalate (PET) fabrics were treated by radio frequency inductively coupled plasma (RF-ICP) to modify their hydrophobic and hydrophilic properties. Types of gases which were SF6, O2, N2 and Ar, treatment time, pressure and RF power were varied systematically. The water droplet contact angle measurements showed that, treating with SF6 plasma would result in the increase of hydrophobicity of PET samples while treating with O2, N2 and Ar plasmas would yield hydrophilic properties. In both hydrophobic and hydrophilic cases, the surface morphology of PET fibers was roughened after exposed to plasma. Hence, it is not obvious that these surface roughness induced by plasma is sufficient to yield the increase in hydrophobicity by the well known lotus effect.
采用射频感应耦合等离子体（RF-ICP）对聚对苯二甲酸乙二酯（PET）织物进行处理，以改变其疏水和亲水性能。系统地改变了气体类型（SF6、O2、N2和Ar）、处理时间、压力和射频功率。水滴接触角测量结果表明，用SF6等离子体处理可使PET样品的疏水性增加，而用O2、N2和Ar等离子体处理则可产生亲水性。在疏水和亲水两种情况下，PET纤维暴露于等离子体后表面形态都会变得粗糙。因此，由等离子体引起的这些表面粗糙度是否足以通过著名的荷叶效应使疏水性增加并不明显。
