2026-06-27T22:27:33Zhttps://docta.ucm.es/rest/oai/request
oai:docta.ucm.es:20.500.14352/74112023-07-18T23:30:14Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense author Orellana, Jaime author Pastor, Ynés Yohana author Calle, Fernando author Pastor Caño, Jose Ygnacio 2023-06-17T08:32:47Z 2023-06-17T08:32:47Z 2021-06-21 2073-4360 10.3390/polym13122027 https://hdl.handle.net/20.500.14352/7411 https://doi.org/10.3390/polym13122027 https://www.mdpi.com/2073-4360/13/12/2027 Bone cement, frequently based on poly (methyl methacrylate), is commonly used in different arthroplasty surgical procedures and its use is essential for prosthesis fixation. However, its manufacturing process reaches high temperatures (up to 120 °C), producing necrosis in the patients’ surrounding tissues. To help avoid this problem, the addition of graphene could delay the polymerisation of the methyl methacrylate as it could, simultaneously, favour the optimisation of the composite material’s properties. In this work, we address the effect of different percentages of highly reduced graphene oxide 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 poly (methyl methacrylate)-based bone cement and its processing. It was noted that a lower sintering temperature was achieved with this addition, making it less harmful to use in surgery and reducing its adverse effects. In contrast, the variation of the density of the materials did not introduce significant changes, which indicates that the addition of highly reduced graphene oxide would not significantly increase bone porosity. Lastly, the mechanical properties (strength, elastic modulus, and fracture toughness) were reduced by almost 20%. Nevertheless, their typical values are high enough that these new materials could still fulfil their structural function. In conclusion, this paper presents a way to control the sintering temperature, without significant degradation of the mechanical performance, by adding highly reduced graphene oxide so that local necrosis of bone cement based on poly (methyl methacrylate) used in surgery is avoided eng Atribución 3.0 España Influence of HRGO Nanoplatelets on Behaviour and Processing of PMMA Bone Cement for Surgery journal article URL https://docta.ucm.es/bitstreams/14b82127-d646-4086-8e88-a808cc17e4fe/download File MD5 6d5fb389ca0c317071ba7f39282d3eb4 5643707 application/pdf polymers-13-02027-v2.pdf