Photochemical Surface Modification of Polyethylene Films by New Azidobenzenesulfonamides

Abstract

New azidobenzenesulfonamides are synthesized. Their photophysical and photochemical properties have been investigated. The photophysical properties of these compounds were investigated by ¹H NMR, IR, and UV spectroscopy. The surface photomodification of polyethylene (PE) films by using new azidobenzenesulfonamides is carried out. The wetting angles for three liquids of different polarities (water, formamide, and diiodomethane) have been studied to estimate the surface modification performed. The obtained wetting angles are used for the determination of the surface free energy γ_S (γ), as well as its polar , dispersive Owens–Wendt , Lifshits–van der Waals γ^LW, and acid-base γ^AB components, by applying the Lifshits–van der Waals/acid-base methods.

Keywords:

• sulfonamides
• surface energy
• surface photomodification

Acknowledgments

The authors would like to thank Dr. K. Golec for the fruitful discussion. This work is financially supported by the Ukrainian Ministry of Research No. 0101U002162.