Effect of atmospheric plasma treatment on the wettability of UHMWPE
Por:
Dominguez-Lopez, I, Dominguez-Diaz, M., Garcia-Garcia, A. L., Barceinas-Sanchez, J. D. O., Martinez, H.
Publicada:
15 feb 2021
Resumen:
The wettability of ultra-high molecular weight polyethylene surfaces was
modified by atmospheric plasma treatment controlling exposure time and
distance. The two-factor experimental design included treating samples
for 0.5 and 1.5 s, placed at 2.0 and 4.0 cm from the plasma. The
behavior of wettability was monitored for 90 days via the sessile drop
method. Right after treatment, contact angle decreased from 85 to nearly
40 degrees. These changes coincided with an increase in the proportion
of the orthorhombic crystalline phase and a reduction in the amorphous
phase of the material. Later on, these structural changes were reversed.
After 90 days of the plasma treatment, the contact angle was 66 and 73
degrees in samples located 2 and 4 cm away from the plasma,
respectively. Although the plasma treatment increased the roughness of
the polyethylene surface by 6 nm, it basically retained its mirror
finish, except for a few blemishes here and there. (c) 2020 Elsevier
B.V. All rights reserved.
Filiaciones:
Dominguez-Lopez, I:
Inst Politecn Nacl, Ctr Invest Ciencia Aplicada & Tecnol Avanzada, Unidad Queretaro, Cerro Blanco 141, Queretaro 76090, Qro, Mexico
Dominguez-Diaz, M.:
(Corresponding Author), Inst Politecn Nacl, CINVESTAV Saltillo, Av Ind Met 1062,Parque Ind Saltillo Ramos Arizpe, Ramos Arizpe, Coah, Mexico
Inst Politecn Nacl, CINVESTAV Saltillo, Av Ind Met 1062,Parque Ind Saltillo Ramos Arizpe, Ramos Arizpe, Coah, Mexico
Garcia-Garcia, A. L.:
Inst Politecn Nacl, Ctr Invest Ciencia Aplicada & Tecnol Avanzada, Unidad Queretaro, Cerro Blanco 141, Queretaro 76090, Qro, Mexico
Barceinas-Sanchez, J. D. O.:
Inst Politecn Nacl, Ctr Invest Ciencia Aplicada & Tecnol Avanzada, Unidad Queretaro, Cerro Blanco 141, Queretaro 76090, Qro, Mexico
Martinez, H.:
Univ Nacl Autonoma Mexico, Inst Ciencias Fis, Av Univ S-N, Cuernavaca 62210, Morelos, Mexico
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