Deformation and failure of multifuncional self-reinforced composites

J. MARINÉ; L. CIOCCI BRAZZANO; M. MOLLO; M.E. FRERKING; P. CERRUTTI; D. BRENDSTRUP; P.A. SORICHETTI; C. BERNAL

Merseburg

Congreso; PolyMerTech18; 2018

Technical University of Merseburg

here is a current growing interest in both academia and industry in the development of multifunctional materials which simultaneously perform different structural functions or combined structural and non-structural functions, such as electrical or optical response, permeability or biodegradability. In addition, the environmental impact of the growing use of plastics and composites derived from non-renewable sources drives the development of new combinations of materials with better properties but also with lower environmental impact. Currently, there is a great interest in self-reinforced composites (SRCs) due to their easy of recycling and the possibility to obtain light structures and components. In these materials, the reinforcement is made of high strength highly oriented fibres or tapes while the matrix is a polymer of the same chemical nature but with a lower melting or softening temperature. Many papers have been reported regarding several aspects of self-reinforced composites [1-4]. In the present work, nanocomposites based on different thermoplastic polymers (Polypropylene (PP), Polyethylene Terephtalate (PET) or Polylactic acid (PLA)) modified with nanofillers (multi-walled carbon nanotubes or bacterial cellulose nanoribbons) were obtained by twin-screw extrusion or by solvent casting. Processing conditions were optimised in order to obtain nanocomposites with adequate filler dispersion and distribution within the polymeric matrix. These materials were subsequently used as the matrix in multifunctional self-reinforced composites obtained by film-stacking followed by compression moulding. The final morphology and the deformation and failure of the different developed materials were investigated.Literature[1]Matabola K. P., De Vries A. R., Moolman F. S., Luyt A. S.: Single polymer composites: a review. Journal of Material Science 44 (2009) 6213?6222[2]Karger-Kocsis J., Bárány T.: Feature article single-polymer composites (SPCs): Status and future trends. Composites Science and Technology 92 (2014) 77?94 [3]Gao C., Yua L., Liu H., Chen L.: Development of self-reinforced polymer composites, Progress in Polymer Science 37 (2012) 767? 780 [4]Kmetty A., Barany T., Karger-Kocsis J.: Self-reinforced polymeric materials: A review, Progress in Polymer Science 35 (2010) 1288?1310