Szczecin, Poland
Szczecin, Poland

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Lee S.-W.,Seoul National University | Park J.-W.,Seoul National University | Kwon Y.-E.,Seoul National University | Kim S.,Seoul National University | And 4 more authors.
International Journal of Adhesion and Adhesives | Year: 2012

Acrylic pressure-sensitive adhesives (PSAs) with different side-chain lengths in the co-monomer were synthesized. This study employed semi-interpenetrated structured polymer networks using UV-curing with a hexafunctional monomer, dipentaerythritol hexacrylate (DPHA). The optical properties of the acrylic PSAs were examined by UV-visible spectroscopy and a prism coupler. ARES was used to characterize the viscoelastic properties of the acrylic PSAs. Adhesion performance was conducted by the peel strength and probe tack tests. Also UV-curing behavior of the acrylic PSAs was investigated by FTIR. © 2012 Published by Elsevier Ltd. All rights reserved.


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).


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.


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
European Polymer Journal | Year: 2012

The design and development of new, tailor-made, novel photoreactive acrylic pressure-sensitive adhesives, which can cope with both the technical and ecological demands, is therefore a continuing challenge for industrial research and development. Progress in the coating technology and the development of improved photoreactive acrylic adhesive will open the door for new applications and an extended market penetration of UV-crosslinkable acrylic adhesive raw materials containing unsaturated copolymerizable photoinitiators incorporated into the polymer backbone. They are characterized by good tack, good adhesion, excellent cohesion and very high shrinkage resistance. In this paper it is shown the application of H-abstractor such as 4-acryloyloxy benzophenone to obtain of the UV-crosslinked acrylic PSA. The presented novel UV-crosslinkable acrylic hotmelt PSA combines the economic advantages of the hotmelt coating technology with the high performance characteristics of the acrylic chemistry, including an excellent aging resistance, optical transparency and heat resistance. © 2012 Elsevier Ltd. All rights reserved.


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.


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: 2012

The focus of the development of UV-crosslinkable self-adhesive medical products is on one hand directed toward customer-oriented requirements such as tack, adhesion, cohesion, biocompatibility, and permeability for water vapor or air. The customer wants highly tolerable, breathable products, which are also characterized by very good skin and optimal release. On the other hand, the economic targets of medical products manufactures must be considered. Development in the area of UV-crosslinkable acrylic pressure-sensitive adhesives (PSA) for medical application describes the variety of acrylic composition, residue monomers content, quality control of peel adhesion level and repeating during the time, biocompatibility of the acrylic self-adhesive layers and their practical medical application. The new class of unsaturable copolymerizable photoinitiator, such as 4-acryloyloxy benzophenone was used for the synthesis of photoreactive UV-crosslinkable solvent-borne acrylic PSA. The properties of acrylic PSA were determined as well. © The Author(s) 2012.


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.


Czech Z.,West Pomeranian University of Technology | Kowalczyk A.,West Pomeranian University of Technology | Ortyl J.,Cracow University of Technology | Swiderska J.,Non Public Health Center
Polish Journal of Chemical Technology | Year: 2013

The use of acrylic pressure-sensitive adhesives (PSAs) is increasing in a variety of industrial fields. They have been applied in the manufacture of mounting tapes, self-adhesive labels, protective films, masking tapes, splicing tapes, carrier-free tapes, sign and marking films, and in diverse medical products, such as pads or self-adhesive bioelectrodes. In this study, the application of SiO2 nanoparticles in acrylic PSA was investigated. The properties of the newly synthesized and modified PSA were evaluated via the tack, peel adhesion, shear-strength and shrinkage. It has been found that the nanotechnologically-reinforced systems consisting of monodisperse non-agglomerated SiO2 nanoparticles and self-crosslinked acrylic PSAs showed a great enhancement in tack, peel adhesion, shear resistance and shrinkage, without showing the disadvantages known to result from the use of other inorganic additives. In this paper we evaluate the performance of SiO 2 nanoparticles with a size of about 30 nm as inorganic filler into the synthesized solvent-borne acrylic PSA.


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.


Czech Z.,West Pomeranian University of Technology | Peech R.,West Pomeranian University of Technology | Zych K.,West Pomeranian University of Technology | Swiderska J.,Non Public Health Center
Journal of Thermal Analysis and Calorimetry | Year: 2012

The thermal stability and thermal degradation of copolymers based on selected alkyl methacrylates at temperatures between 250 and 40°C have been studied using pyrolysis-gas chromatography. The type and composition of thermal degradation products gave useful information about the mechanism of pyrolysis of copolymers synthesized by using typical commercially available alkyl methacrylates. It was observed that the main thermal degradation products from alkyl methacrylate copolymers are monomers of alkyl methacrylates using by synthesis. Other pyrolysis by-products formed during thermal degradation were carbon dioxide, carbon monoxide, methane, ethane, methanol, ethanol, and propanol-1. © Akadémiai Kiadó, Budapest, Hungary 2011.

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