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Mechanical and thermal behavior of pHEMA and pHEMA nanocomposites targeting for dental materials

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Abstract

In the last two decades, polymer matrix nanocomposites have been drawing great attention among research communities owing to their superior properties, such as being lightweight, stiffness, and having better specific strength in comparison to base polymer and traditional materials. However, limited work was targeted for biomedical applications. Thus, the development of biocompatible polymer composites is most promising research topic in the field of material science. Poly(2-hydroxyethylmethacrylate) (pHEMA) is one of the favorable biomaterial due to high water content, nontoxicity, and tissue compatibility. This article encompasses the synthesis of pHEMA nanocomposites and their characterization targeting for dental material. The pHEMA nanocomposites were fabricated through blending and an extrusion dispersion technique. In this process, a twin-screw extruder machine was used. The appropriate amounts of nanoclay and TiO2 nanoparticles were dispersed in pHEMA and the machine was operated at a shear rotation of 10 rpm for 10 min to ensure the homogeneous dispersion of nanoparticles in the matrix. The thermal analyses were performed by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and field emission scanning electron microscopy (FESEM) analyses were performed for studying the structural, morphological, and microstructural behavior of the nanocomposites. A multi-cycle indentation test and micro-scratch analysis was performed. A considerable transformation in the microstructural behavior with improved thermo-mechanical properties was observed in pHEMA/1 wt% nanoclay and pHEMA/2 wt% nanoclay nanocomposites.

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Acknowledgements

The authors are grateful to DST, Govt. of India and TQUIP-2 to carry out this work. This work has been carried out under the R&D project entitled Synthesis and Characterization of Dental Polymeric Nanocomposite Materials vide sanction order no. SB/EMEQ-020/2013 dated 04.11.2013 supported by SERB, DST, Govt. of India.

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Correspondence to Ashis Mallick.

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Alamgir, M., Mallick, A. & Nayak, G.C. Mechanical and thermal behavior of pHEMA and pHEMA nanocomposites targeting for dental materials. Appl Nanosci 11, 1257–1265 (2021). https://doi.org/10.1007/s13204-021-01767-x

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  • DOI: https://doi.org/10.1007/s13204-021-01767-x

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