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K. Gziut, A. Kowalczyk

Influence of radical photoinitiators on features of polyacrylate syrups and self-adhesives (in English)

Polimery 2020, No 4, 268


DOI: dx.doi.org/10.14314/polimery.2020.4.2

Summary

Pressure-sensitive adhesives (PSAs) were prepared via UV-irradiaton of an acrylic syrups with reactive diluent (functional diacrylate) and photoinitiator. The acrylic syrups were received via free radical bulk polymerization process (FRBP) and influence of radical photoinitiator (α-hydroxyketones, acylphosphine oxides or mixtures thereof) was investigated. It was revealed that the mixture of bisacyl­phosphine oxide (Omnirad 819) and α-hydroxyketone (Omnirad 184) was the most effective in FRBP (the highest monomer conversion), but preferable features of acrylic syrups (viscosity and molecular weight of copolymers) and self-adhesive properties of PSAs (especially cohesion) was achieved due to α-hydroxyketones using.


Keywords: bulk photopolymerization, acrylic syrup, radical photoinitiators, pressure-sensitive adhesives
e-mail: apawlak@cbmm.lodz.pl
K. Gziut, A. Kowalczyk
Influence of radical photoinitiators on features of polyacrylate syrups and self-adhesives (in English)