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      • KCI등재

        Bio-mimicking hybrid polymer architectures as adhesion promoters for low and high surface energy substrates

        Monisha Baby,Vijayalakshmi K. Periya,Bhuvaneshwari Soundiraraju,Nisha Balachandran,Suchithra Cheriyan,Santhosh K. Sankaranarayanan,Satheesh Chandran Maniyeri 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.100 No.-

        Thermoplastic materials like High Density Polyethylene (HDPE) and Polytetrafluoroethylene (PTFE) arepromising candidates for specialty industry/aerospace sectors considering their exceptional propertiesand lower densities. However, the low surface energy leading to poor wetting and reduced adhesioncurtails the scope of their wide-spread usage. In this work, we report adhesion promoter primers basedon epoxy–catechol with and withoutfluorinated polymer and investigated their adhesion promotionefficiency on low/high surface energy substrates. The rational design of catechol-fluorine-epoxy hybridnetwork, mimicking mussel chemistry enabled a non-destructive surface activating approach resultingin profound adhesion promotion. Thefluorine containing primer could effectively enhance adhesionbetween homo and hetero interfaces of Aluminium/HDPE/PTFE owing to the good interface interactionand could outperform common etching methods. A series of molecular level characterizations togetherwith computational and AFM studies provided evidences for the high degree of interaction of the primerbetween the substrates and epoxy-based adhesives. Bond integrity endurance test using a weight of 10and 20 kg resulted in ‘no fail’ categorization for the primed substrates during the entire 40 days testduration. The catechol-functionalized primers reported here can be a good overreaching approach tokeep non-polar substrates afloat in advanced sectors.

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