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The Effect of Chemical Properties of Comonomer on Adhesion Properties of Acrylic Pressure Sensitive Adhesives  

Choi, Woon-Jin (Department of Polymer Science, Kyungpook National University)
Kim, Ho-Gyum (Department of Polymer Science, Kyungpook National University)
Cho, Kwang-Soo (Department of Polymer Science, Kyungpook National University)
Lee, Dong-Ho (Department of Polymer Science, Kyungpook National University)
Min, Kyung-Eun (Department of Polymer Science, Kyungpook National University)
Publication Information
Polymer(Korea) / v.31, no.5, 2007 , pp. 369-373 More about this Journal
Abstract
In this study, solvent-free pressure sensitive adhesives (PSA) using acrylic copolymer was prepared by UV radiation to investigate the effect of comonomer on the adhesion properties. Adhesive force value of PSA was increased with the amount of comonomer having shorter side chain due to the enhanced intrinsic surface energy. Peel and shear strength were also influenced by chemical properties of comonomer. The addition of comonomer, ethyl and n-butyl acrylate allows PSA sample with high peel and shear strength. This nay be explained in terms of correlation between loss modulus and glass transition temperature of PSA. As the addition of acrylic comonomers with long side chain length decreases the loss modulus of PSA, the deformation of PSA can not be inhibited.
Keywords
acrylic PSA; adhesive force; peel strength; UV cure; copolymer;
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