Evaluation of Aging in Air of Poly (Ethylene Terephthalat) in Oxygen Plasma

Abstract

Polyester fabric samples -PET (poly (ethylene terephtalate)), were treated with oxygen plasma, in order to alter the hydrophilicity of such material. The process parameters: working pressure, current, tension and temperature were kept constant, varying only the treatment time. In order to evaluate the change caused on samples hydrophilicity, as well as the influence of the treatment time, the vertical wicking test was used. The samples were stored at standard temperature and pressure conditions, and their wettability were measured one day after the treatment and repeated after 30, 60 and 360 days, in order to check the stability of the effects produced. Scanning electron microscopy (SEM), Raman and ATR (Attenuated total reflection) spectroscopies were used to evaluate physical and chemical alterations on the samples surface. The results have shown a substantial improvement on the hydrophilicity of the treated samples compared to the non-treated sample.

Surface modification of PET fabric by plasma pre‐treatment for long‐lasting permethrin deposition

“…By oxygen plasma treatment, the introduction of polar groups containing oxygen on the surface may be the main reason for an improvement in hydrophilicity and the increased absorption of the permethrin solution and its interaction with the sample. Feitor et al 18 also reported an increase in hydrophilicity of PET hydrophobic fabric after plasma treatment in an oxygen environment, in good agreement with these results. After the permethrin impregnation in PET fabric with or without plasma pre‐treatment, the carbon contents are increased, while oxygen contents are reduced, which is possibly caused by the replacement of oxygen in the PET fabric by carbon presented in the chemical structure of permethrin.…”

Plasma Treatment of Polyamide Fabric Surface by Hybrid Corona-Dielectric Barrier Discharge: Material Characterization and Dyeing/Washing Processes

“…The plasma treatment of the samples was carried out in a commercial hybrid corona-DBD plasma system (PLASMA LABO, Arioli, Italy). Details about the corona inducing dielectric barrier discharge can be found in 18 . Figure 1 shows the schematic diagram of the plasma reactor.…”

Physical, Chemical and Morphological Characterization of Polyamide Fabrics Treated with Plasma Discharge

“…On the thirtieth day after plasma treatment, despite the fact that the sample presented a contact angle that is still much lower than the untreated sample, it is possible to observe a significant decrease in hydrophilicity (80.3º) when compared with treated samples measured in the same day of plasma treatment (23.3º). Hypotheses considered for this so-called hydrophobic recovery are based on subtle phenomena such as the dynamic behaviour of polymers at the surface or on mechanisms such as surface contamination and molecular dissociation 29,30 .…”