A Novel Class of Cost Effective and High Performance Composites Based on Terephthalate Salts Reinforced Polyether Ether Ketone
by
Franco Dominici 1,*
, Debora Puglia 1, Francesca Luzi 1, Fabrizio Sarasini 2, Marco Rallini 1 and Luigi Torre 1
Franco Dominici 1,*, Debora Puglia 1, Francesca Luzi 1, Fabrizio Sarasini 2, Marco Rallini 1 and Luigi Torre 1
1
Civil and Environmental Engineering Department, University of Perugia, Strada di Pentima 4, 05100 Terni, Italy
2
Department of Chemical Engineering Materials Environment, Sapienza-Università di Roma and UdR INSTM, Via Eudossiana 18, 00184 Roma, Italy
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(12), 2097; https://doi.org/10.3390/polym11122097
Received: 27 November 2019 / Revised: 10 December 2019 / Accepted: 12 December 2019 / Published: 14 December 2019
(This article belongs to the Section Polymer Analysis)
Poly(ether ether ketone) (PEEK)-based nanocomposites have been realized with incorporation (0–30 wt %) of anhydrous calcium terephthalate salts (CATAS), synthetized by reaction of terephtalic acid with the metal (Ca) oxide, by means of a melt processing. Their structure, morphology, thermal, and mechanical properties have been investigated. Scanning electron microscopy observations confirmed homogeneous dispersion of nanometer-sized fillers and a toughened fracture morphology even at the higher content, while thermal characterization confirmed an unvaried thermal stability and unmodified crystalline structure of the reference PEEK matrix. A negligible nucleating effect was evidenced, while a blocking effect of the amorphous phase fraction provide composites with increased stiffness, confirmed by enhanced values of G’ and shifts of glass transition peak to higher temperatures, for restriction in chain mobility imposed by CATAS. The proposed solutions aimed to enlarge the application range of high performance costly PEEK-based composites, by using thermally stable nanofillers with limited costs and easily controllable synthesis phase.
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Keywords:
poly(ether ether ketone), PEEK; calcium terephthalate salts; high performance nanocomposites
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MDPI and ACS Style
Dominici, F.; Puglia, D.; Luzi, F.; Sarasini, F.; Rallini, M.; Torre, L. A Novel Class of Cost Effective and High Performance Composites Based on Terephthalate Salts Reinforced Polyether Ether Ketone. Polymers 2019, 11, 2097.
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