Wetting properties of polystyrene ionomers treated with plasma source ion implantation

Abstract

ABSTRACT:The wetting properties of polystyrene-based ionomers treated with plasma source ion implantation (PSII) were investigated by the measurement of water contact angles. When sulfonated ionomers were aged for a few days, the hydrophobic recovery for the ionomers became much slower than that for the nonionic polymers. However, when the samples were aged over 20 days, the water contact angle of the ionomers converged with that of the nonionic polymer. Thus, it was concluded that the ionic interaction between the ionic groups and the presence of ionic groups together resulted in the slow hydrophobic recovery and that the aging effect was significant for the ionomers. For the methacrylate ionomer of low ion content, on the other hand, it was found that the PSII treatment produced only a small change in hydrophobic recovery behavior. Thus, it was suggested that the low ionic content coupled with the small size of the ionic unit might cause changes only of a very insignificant degree in hydrophobic recovery behavior.

Plasma-based ion implantation and deposition: a review of physics, technology, and applications

“…Since the invention of the PBII technique, about 20 articles have been published on PBII processing of polymers [48,124,[144][145][146][147][148][149][150][151][152][153][154][155][156][157][158][159].…”

“…The main topics concern surface modifications [144,[155][156][157][158], and in particular mechanical properties [48,145,147,148,154], wetting properties [124, 146, 151-153, 155, 157] and PBII processing of insulating materials [150,151,158]. One publication deals with protective treatments against oxidative environments, and a recent one demonstrates its interest for the fabrication of micro-electrical mechanical systems, or MEMS [159].…”

Some Applications of Cathodic Arc Coatings

“…Exposure to low-temperature plasma and processing by immersing the whole object into plasma for ion treatment has become a rather widely used approach to modify wettability and reduce adhesion of bacterial cells [193,194,195,196,197,198,199,200].…”

Surface properties of ionomers based on styrene-b-acrylic acid copolymers obtained by copolymerization in emulsion

“…Surface properties of ionomers after plasma or plasma source ion implantation (PSII) treatment were studied by few scientist [5][6][7][8][9], who investigated hydrophobic recovery of styrene-based ionomers [5][6][7][8], methyl methacrylate-based and ethyl acrylatebased ionomers [9] after modification. Their studies indicated that the hydrophobic recovery of ionomers treated with plasma or PSII was slower than that of acid-form copolymers or non-ionic polymer due to the interactions between new oxidized groups and ionic groups which came out towards the ionomer surface.…”