Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Influence of wt. % and Specific Area of HRGO Nanoplatelets Addition on Physical, Thermal, Mechanical Behaviour and Processing Evolution of PMMA Bone Cement for Orthopaedic and Trauma Surgery

Version 1 : Received: 6 May 2021 / Approved: 10 May 2021 / Online: 10 May 2021 (15:27:44 CEST)

A peer-reviewed article of this Preprint also exists.

Orellana, J.; Pastor, Y.Y.; Calle, F.; Pastor, J.Y. Influence of HRGO Nanoplatelets on Behaviour and Processing of PMMA Bone Cement for Surgery. Polymers 2021, 13, 2027. Orellana, J.; Pastor, Y.Y.; Calle, F.; Pastor, J.Y. Influence of HRGO Nanoplatelets on Behaviour and Processing of PMMA Bone Cement for Surgery. Polymers 2021, 13, 2027.

Journal reference: Polymers 2021, 13, 2027
DOI: 10.3390/polym13122027

Abstract

Bone cement, mainly based in PMMA, is commonly used in different arthroplasty surgical proce-dures, and its use is essential for prosthesis fixation. However, its manufacturing process reaches high temperatures that can produce necrosis in the patients' surrounding tissues. In order to con-tribute to avoid this problem, the addition of graphene could delay the polymerisation of the MMA and, simultaneously, contribute to the optimisation of the composite material's properties. This article analysed the effect of the addition of different percentages of Highly Reduced Graphene Oxide (HRGO) with different wt. % (0,10, 0,50 and 1,00) and surface densities (150, 300, 500 and 750 m2/g) on the physical, mechanical, and thermal properties of commercial PMMA-based bone cement and its processing. It was noticed that a lower sintering temperature would be reached with this addition, making it less harmful to use in surgery and as it reduces its adverse effects. In contrast, the materials' density does not show significant changes, which indicates that the addi-tion of HRGO does not significantly increase its porosity. Lastly, the mechanical properties are re-duced by almost 20 %. Nevertheless, these properties are high enough so that these new materials can still fulfil their structural function.

Subject Areas

PMMA: Polymethylmethacrylate; HRGO: Highly Reduced Graphene Oxide; DSC: Differential Scanning Calorimetry; FESEM: Field Emission Scanning Electron Microscopy.

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