Adhesion improvement via surface functionalization of epoxy-resin base post by low temperature plasma

• Main Authors: Waleepan Rakitikul, Vannajan Sanghiran Lee, Piriya Yavirach, Dheerawan Boonyawan, Piyarat Nimmanpipug
• Format: Journal
• Published: 2018
• Subjects: Chemistry; Materials Science; Physics and Astronomy
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84940121413&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/54306
• Institution: Chiang Mai University

© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. The adhesion between dental materials could be improved by an increase of interfacial polarity. In this study, low temperature plasma was used to treat an epoxy-based post. The surface modifications after treatment were characterized by X-ray photoelectron spectroscopy (XPS) which showed the existence of N, O- containing groups in the epoxy-based post. Furthermore, functionalization positions were proposed by Quantum Mechanic (QM) calculation. It could confirm the position that such a functional group was formed at hydroxyl group and alpha-carbon with an energy level around 93-97 kcal/mol through hydrogen abstraction reaction. Both experiments and calculations show consistent results indicating polar group formation on the surface after plasma treatments.