Journal
POLYMER CHEMISTRY
Volume 13, Issue 2, Pages 193-200Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1py01216a
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Funding
- Ministry of Small and Medium-sized Enterprises (SMEs) and Startups, Korea, under the Regional Star-Enterprise Development Program (RD) [S2865853]
- Korea Technology & Information Promotion Agency for SMEs (TIPA) [S2865853] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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UV-responsive pressure-sensitive adhesives were successfully achieved by utilizing the ring-opening reactions of N-carbonyl aziridine radicals. The post-modification of carboxylic acid-functionalized acrylic PSAs was characterized by spectroscopic analysis and their adhesion performance under UV light irradiation was evaluated, showing potential for academic research and mass-production industry applications.
UV-responsive pressure-sensitive adhesives (PSAs) were achieved through the ring-opening reactions of N-carbonyl aziridine radicals. By exploiting the variable ring-opening rate (depending on the N-substituent in the aziridine ring) of a suitable monomer (N-methacryloyl-2-methylaziridine), the post-modification of the carboxylic acid-functionalized acrylic PSAs was accomplished under mild conditions. The double-bond-added PSAs were characterized by spectroscopic analysis (i.e., H-1 NMR and FT-IR) and their adhesion performance was evaluated under UV light irradiation (i.e., 180 degrees peel test and loop tack test), which confirmed their switching-off capabilities and real-time viscosity properties and ensured a relatively long pot life. We believe our approach will render the transformation of UV-responsive polymeric materials a feasible task, which will benefit both academic research and mass-production industry.
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