Fluoropolymer coated alanine films treated by atmospheric pressure plasmas − In comparison with gamma irradiation

Abstract

Fluoropolymer coated alanine films are treated by a dielectric barrier discharge and a gliding arc at atmospheric pressure as well as with gamma irradiation. The film surfaces and the underlying bulk materials are characterized before and after each treatment. The fluorine content decreases and the oxygen content increases at the fluoropolymer surfaces, while deposition of specific plasma energies in the alanine films is detected by electron paramagnetic resonance spectroscopy, indicating that not only the fluoropolymer surfaces but also the bulk alanine materials are modified. Differences of surface and bulk modification effects between the two plasma treatments are discussed in detail.

High‐speed plasma treatment of polyethylene terephthalate films using ultrasound assisted dielectric barrier discharge

“…It is generally believed that plasma treatment can modify material surfaces while retaining bulk properties 39 . However, the bulk properties may be affected by ultraviolet irradiation from a plasma 13 . There is a potential risk that the bulk properties of polymer films may be deteriorated by the exposure in a plasma.…”

“…39 However, the bulk properties may be affected by ultraviolet irradiation from a plasma. 13 There is a potential risk that the bulk properties of polymer films may be deteriorated by the exposure in a plasma. However, the result of the present work indicates that ultrasonic irradiation during plasma treatment enables significant reduction of the exposure time so as to reduce such a risk.…”

“…Atmospheric pressure low‐temperature plasma treatment is widely studied and applied for polymer surface modification 4,5 . Commonly used atmospheric pressure low‐temperature plasmas include a gliding arc, 6–8 cold plasma torch, 9,10 a corona discharge 11 and a dielectric barrier discharge (DBD) 12–14 . The DBD is a simple and robust plasma that can be generated at atmospheric pressure.…”

“…4,5 Commonly used atmospheric pressure low-temperature plasmas include a gliding arc, [6][7][8] cold plasma torch, 9,10 a corona discharge 11 and a dielectric barrier discharge (DBD). [12][13][14] The DBD is a simple and robust plasma that can be generated at atmospheric pressure. The DBD can be generated in a gap between electrodes covered with dielectrics.…”

Investigation of air plasma generated by surface microdischarge for decellularized porcine aortic valve leaflets modification

“…Cold atmospheric plasmas (CAPs) have been widely used in the biomedical field in recent years. [ 9–15 ] Due to the high‐energy charged particles, active oxides and nitrides, free radicals, electric fields, ultraviolet rays, and others, CAPs have been proved to be beneficial for disinfection, [ 16 ] wound treatment, [ 17 ] cancer treatment, [ 18 ] material modification, [ 19 ] stem cell differentiation, [ 20 ] cytoprotection, [ 21 ] and dentistry applications. [ 22 ] CAPs also have potential in tissue engineering and regenerative medicine.…”