Tailoring of the interfacial properties of polymeric single fibre-reinforced epoxy composites by non-oxidative plasma treatments |
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| Affiliation: | 1. Instituto Nacional del Carbón (INCAR-CSIC), Apartado 73, 33080 Oviedo, Spain;2. Instituto de Quıímica Física “Rocasolano” (IQFR-CSIC), Serrano 119, 28006 Madrid, Spain;1. Faculté des Sciences, Université de Ammar Telidji Laghouat, 03000, Laghouat, Algeria;2. Faculté de Technologie, Université de Djelfa, 17000, Djelfa, Algeria;3. Laboratoire d''étude et développement des matériaux semi-conducteurs et diélectriques Université de Ammar Telidji Laghouat, 03000, Laghouat, Algeria;4. Laboratoire de Physique des Matériaux, Université de Ammar Telidji Laghouat, 03000, Laghouat, Algeria;5. Physics Department, Faculty of Science, University of M''sila, 28000 M''sila, Algeria;6. Laboratory of Materials Physics and Its Applications, University of M''sila, 28000 M''sila, Algeria;1. School of Physics, Gangadhar Meher University, Sambalpur 768001, India;2. Department of Physics, C. V. Raman College of Engineering, Bhubaneswar 752054, India;3. Department of Mechanical Engineering, Institute of Technical and Engineering Research (ITER), Siksha-O-Anusandhan (SOA) University (Deemed to be), Bhubaneswar 751030, India;4. Department of Metallurgical and Materials Engineering, National Institute of Technology, Rourkela 769008, India;1. Federal University of Amazonas – UFAM, Manaus, Brazil;2. School of Food Engineering, State University of Campinas – UNICAMP, Campinas, Brazil;3. School of Chemical Engineering, State University of Campinas – UNICAMP, Campinas, Brazil |
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| Abstract: | The interfacial properties of epoxy composites reinforced with a single, plasma-treated fibre of either poly(p-phenyleneterephthalamide) (PPTA) or poly(p-phenylenebenzobisoxazole) (PBO) have been investigated with a focus on evaluating the effect of two non-oxidative (He and N2) microwave plasma treatments on interfacial adhesion properties. Tensile testing of single filaments revealed that their tensile strength does not diminish with the plasma treatments, despite the fact that their surface properties have been both physically and chemically modified. Interfacial characterisation by Raman spectroscopy indicated that the quality of adhesion was substantially enhanced following exposure of the fibres to microwave plasma treatment in either pure helium or pure nitrogen flows for just one minute. Such improvement was higher than that attained when O2 was used for blowing the plasma, under the same operational conditions. Moreover, no swelling effect was observed by AFM after exposure of the He or N2 plasma-treated fibres to ambient conditions for as much as 24 h. |
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| Keywords: | A. Polymer–matrix composites (PMCs) B. Fibre/matrix bond B. Adhesion E. Surface treatments |
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