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Szczecin, Poland

Singh A.K.,University of Delhi | Mehra D.S.,University of Delhi | Niyogi U.K.,University of Delhi | Sabharwal S.,International Atomic Energy Agency | And 3 more authors.
International Journal of Adhesion and Adhesives | Year: 2013

Polyurethane (PU) based pressure-sensitive adhesive (PSA) using monofunctional urethane acrylate (MFUA) and difunctional urethane acrylate (DFUA) has been cured using electron beam (e-beam) irradiation. The effect of varying e-beam doses on the adhesion properties viz. peel adhesion, shear adhesion and initial tack of PSA has been studied. Effect of various crosslinkers viz. methylene diphenyl di-isocynate (MDI), isophorone di-isocynate (IPDI) and triallyl isocynurate (TAIC) on adhesion properties as well as on moisture vapor transmission rate (MVTR) and gel content of the PSA has also been studied. It was observed that with increasing dose and concentration of crosslinkers all the adhesion properties viz. peel adhesion, shear adhesion strength and initial tack were increased and reached a plateau, and then a decline was observed with further increasing of the dose and crosslinkers concentration. Similarly, MVTR decreased and the gel content increased with increasing dose of electron beam. © 2012 Elsevier Ltd. All rights reserved. Source


Czech Z.,West Pomeranian University of Technology | Kowalczyk A.,West Pomeranian University of Technology | Kabatc J.,University of Technology and Life Sciences in Bydgoszcz | Shao L.,Harbin Institute of Technology | And 2 more authors.
Polymer Bulletin | Year: 2013

UV-initiated crosslinking technology is well established in the market and allows the production of a wide range of ultraviolet (UV)-crosslinkable pressure-sensitive adhesives (PSA) with interesting features. The balance between such properties as adhesive and cohesive strengths within the crosslinked self-adhesive coatings is critical for their performance. The UV crosslinking of acrylic PSA, especially for following properties: tack, peel adhesion, and shear strength of self-adhesive polymer layers, has been investigated using UV excimer-laser and UV lamp as UV sources. It was observed that after UV crosslinking of acrylic PSA using excimer-laser in comparison with typical UV lamp, high-quality PSA products with excellent properties, such as tack, peel adhesion, shear strength, and shrinkage were received. © 2012 The Author(s). Source


Czech Z.,West Pomeranian University of Technology | Kowalczyk A.,West Pomeranian University of Technology | Pelech R.,West Pomeranian University of Technology | Wrobel R.J.,West Pomeranian University of Technology | And 3 more authors.
International Journal of Adhesion and Adhesives | Year: 2012

Electrical conductive pressure-sensitive adhesives (PSAs) are not commercially available on the market. The development of these PSAs requires special suitable self-adhesive polymers and their modification through adding of electrical conductive fillers. From the evaluated PSAs the best performances were achieved using acrylic PSAs. Common fillers for electrical conductivity are carbon nano-fillers, metallic powders like copper, aluminum, nickel, silver or gold. Acrylic PSA containing electrical conductivity fillers are applied for the manufacturing of diverse technical self-adhesive products, such as broadest line of electrically conductive sensitive double-sided, one-sided and carrier-free tapes. After addition of electrical conductive fillers the main typical properties for pressure-sensitive adhesives like tack and peel adhesion are deteriorated. In the last time the research and development on the area of nano carbon black or nanotubes as electrical conductive fillers is observed. © 2012 Elsevier Ltd. Source


Czech Z.,West Pomeranian University of Technology | Kowalczyk A.,West Pomeranian University of Technology | Kabatc J.,University of Technology and Life Sciences in Bydgoszcz | Swiderska J.,Non public Health Center | And 2 more authors.
Polymer Bulletin | Year: 2012

This article describes the photoreactive UV-crosslinkable solvent-borne acrylic pressure-sensitive adhesives (PSA) containing unsaturated copolymerizable photoinitiators and their synthesis. The solvent-borne acrylic PSA were synthesized in ethyl acetate as a solvent, and the copolymerizable photoinitiators type II, known as hydrogen abstractors, were incorporated into acrylic polymer chain during conducted radical polymerization process. The synthesized solvent-borne acrylic PSA containing different unsaturated photoinitiators were investigated to evaluate their relevant and significant properties such as tack, peel adhesion, and shear strength after UV exposure. © Springer-Verlag 2011. Source


Czech Z.,West Pomeranian University of Technology | Kowalczyk A.,West Pomeranian University of Technology | Kabatc J.,University of Technology and Life Sciences in Bydgoszcz | Swiderska J.,Non public Health Center
Polymer Bulletin | Year: 2013

This article discusses thermal analysis of different molecular weight poly(2-ethylhexyl acrylates) synthesized by radical polymerization of 2-ethylhexyl acrylate. The main aim of this work was to investigate the thermal properties and degradation process of synthesized acrylic homopolymers and forming of thermal degradation products during their pyrolysis. As investigated method pyrolysis combined with gas chromatography was used. Poly(2-ethylhexyl acrylates) are used as plasticizers for pressure-sensitive adhesives applied in medical area. © Springer-Verlag Berlin Heidelberg 2013. Source

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