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Property modification of a silicone acrylic pressure-sensitive adhesive with oligomeric silicone urethane methacrylate

Authors
Park, Hee-WoongPark, Ji-WonLee, Jung HyunKim, Hyun-JoongShin, Seunghan
Issue Date
3월-2019
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Keywords
Pressure-sensitive adhesive; Silicone macro-azo-initiator; Silicone urethane methacrylate; Low surface energy substrate; Peel strength
Citation
EUROPEAN POLYMER JOURNAL, v.112, pp.320 - 327
Indexed
SCIE
SCOPUS
Journal Title
EUROPEAN POLYMER JOURNAL
Volume
112
Start Page
320
End Page
327
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/67068
DOI
10.1016/j.eurpolymj.2019.01.021
ISSN
0014-3057
Abstract
A silicone acrylic pressure-sensitive adhesive (SPSA) was synthesized using a silicone macro-azo-initiator as an adhesive for low surface energy substrates. The SPSA had a high peel strength value on an SUS (steel use stainless) substrate due to its low surface energy; however, it had very low peel strength values on low surface energy substrates such as PP and PE. In this study, a silicone urethane dimethacrylate (SiUDMA) oligomer was synthesized as a modifier for the SPSA. The SiUDMA had a much lower viscosity and a slightly higher surface energy than the SPSA. The addition of SiUDMA increased the peel strength of the SPSA regardless of the substrate. In the case of the PP and PE substrates, the increase of peel strength with SiUDMA addition was remarkably large when compared to the SUS substrate because SiUDMA significantly reduced SPSA viscosity and improved its fluidity, consequently facilitating the wetting of the rough surfaces of PP and PE. The rough surfaces of PP and PE could also aid the spreading of SiUDMA-modified SPSA and enlarge the interfacial area. On the other hand, UV curing of SiUDMA and the SiUDMA-modified SPSA resulted in a serious decrease in the peel strength on the PP and PE substrates due to the decrease in the fluidity of the SPSA material, but the SAFT of SPSA increased with UV irradiation.
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공과대학 (화공생명공학과)
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