Dielectric dynamics of some nylon 6/CaCO3 composites using broadband dielectric spectroscopy

• Published in: Journal of applied polymer science Vol. 122; no. 3; pp. 2039 - 2046
• Main Authors: Turky, G. M., Ghoneim, A. M., Kyritsis, A., Raftopoulos, K., Moussa, M. A.
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 05-11-2011; Wiley; Wiley Subscription Services, Inc
• Subjects: Applied sciences; Broadband; Calcium carbonate; charge transport; Composites; dielectric properties; Dielectrics; Electrical resistivity; Exact sciences and technology; Forms of application and semi-finished materials; Glass transition; heterogeneous polymers; Materials science; molecular dynamics; Polyamide resins; Polymer industry, paints, wood; Polymer matrix composites; Polymers; Spectroscopy; Technology of polymers; Ionic conduction; Particle size; Alpha relaxation; Dielectric properties; Temperature effect; Experimental study; molecular dynamics; Composite material; charge transport; Thermostimulated depolarization; composites; Amide 6 polymer; Aliphatic polymer; heterogeneous polymers; Calcium carbonate; Concentration effect
• ISSN: 0021-8995; 1097-4628; 1097-4628
• DOI: 10.1002/app.34166

Broadband dielectric spectroscopy (10−1 to 106 Hz) in combination with TSDC were employed to study the relaxations and the conductivity phenomena in polyamide 6/CaCO3 composites loaded with different contents and particle sizes of treated and untreated CaCO3. In addition to the primary α‐relaxation associated with the glass transition, significant interfacial relaxation and ionic conduction processes have been revealed. The temperature dependence of the relaxation rates of α‐relaxation and Maxwell–Wagner–Siller‐process as well as that of the hopping rate of the conduction mechanism were found to follow the Vogel–Fulcher–Tammann‐model. This may support the idea that the three mechanisms are not completely independent. The modification of the filler does not add any effect on the resistivity values. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011.