Published : 2024-05-22

Effect of low-temperature plasma treatment on rubber properties

Abstract

The effect of the distance (0.5 and 5 mm) and exposure time (10 and 30 s) of the atmospheric plasma on the structure and surface properties (contact angle, adhesion) of unvulcanized rubber was examined. FT-IR and SEM were used to assess the structure. After plasma treatment, a higher intensity of the OH and COO- bands was observed, while the intensity of the bands from  methylene groups decreased. SEM showed that plasma significantly reduces the size and number of  agglomerates, resulting in a more uniform structure. The plasma distance has a significant effect on the surface properties of the rubber, with a better effect achieved at a smaller distance (0.5 mm). In this case, the rubber character changed from hydrophobic to hydrophilic, which is related to the introduction of oxygen species.
A greater plasma distance (5 mm), regardless of the exposure time, resulted in a lower adhesion force.
The exposure time had no significant effect on the tested rubber properties.



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Ďurišová, S. ., Pajtášová, M. ., Ondrušová, D. ., Janík, R. ., Mičicová, Z. ., Dubec, A. ., … Klepka, T. . (2024). Effect of low-temperature plasma treatment on rubber properties. Polimery, 69(4), 245–253. https://doi.org/10.14314/polimery.2024.4.5