Hybrid denture acrylic composites with nanozirconia and electrospun polystyrene fibers

Autoři: A. A. Elmadani aff001;  I. Radović aff002;  N. Z. Tomić aff003;  M. Petrović aff001;  D. B. Stojanović aff001;  R. Jančić Heinemann aff001;  V. Radojević aff001
Působiště autorů: University of Belgrade, Faculty of Technology and Metallurgy, Belgrade, Serbia aff001;  University of Belgrade, Laboratory for Materials Sciences, Institute of Nuclear Sciences ‘‘Vinča”, Belgrade, Serbia aff002;  Innovation Center of Faculty of Technology and Metallurgy in Belgrade, Belgrade, Serbia aff003
Vyšlo v časopise: PLoS ONE 14(12)
Kategorie: Research Article
doi: 10.1371/journal.pone.0226528


The processing and characterization of hybrid PMMA resin composites with nano-zirconia (ZrO2) and electrospun polystyrene (PS) polymer fibers were presented in this study. Reinforcement was selected with the intention to tune the physical and mechanical properties of the hybrid composite. Surface modification of inorganic particles was performed in order to improve the adhesion of reinforcement to the matrix. Fourier transform infrared spectroscopy (FTIR) provided successful modification of zirconia nanoparticles with 3-Methacryloxypropyltrimethoxysilane (MEMO) and bonding improvement between incompatible inorganic nanoparticles and PMMA matrix. Considerable deagglomeration of nanoparticles in the matrix occurred after the modification has been revealed by scanning electron microscopy (SEM). Microhardness increased with the concentration of modified nanoparticles, while the fibers were the modifier that lowers hardness and promotes toughness of hybrid composites. Impact test displayed increased absorbed energy after the PS electrospun fibers had been embedded. The optimized composition of the hybrid was determined and a good balance of thermal and mechanical properties was achieved.

Klíčová slova:

Acrylics – Composite materials – Mechanical properties – Nanomaterials – Nanoparticles – Polymers – Scanning electron microscopy – Fibers


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