Fabrication of PMMA nanocomposite biomaterials reinforced by cellulose nanocrystals extracted from rice husk for dental applications Articles uri icon

publication date

  • August 2024

start page

  • 2808

end page

  • 2825

issue

  • December 2024

volume

  • 12

International Standard Serial Number (ISSN)

  • 2223-7690

Electronic International Standard Serial Number (EISSN)

  • 2223-7704

abstract

  • The primary objective of global studies is to develop the properties and durability of polymers for
    various applications. When it comes to dental disability, denture base materials must have sufficient mechanical
    and tribological performance in order to withstand the forces experienced in the mouth. This work aims to
    investigate the effects of the addition of low content of cellulose nanocrystals (CNC) on the mechanical and
    tribological performance of the polymethyl methacrylate (PMMA) nanocomposites. Different weight percent
    of CNC (0, 0.2, 0.4, 0.6, and 0.8 wt%) were added to the PMMA matrix followed by ball milling to evenly
    distribute the nanoparticles reinforced phase in the matrix phase. The findings emphasize the significant
    impact of CNC integration on the performance of PMMA nanocomposites. By increasing the content of the
    CNC nanoparticles, the mechanical properties of PMMA were improved. In addition, the tribological outcomes
    demonstrated a significant reduction in the friction coefficient besides an enhancement in the wear resistance
    as the weight percentage of nanoparticles increased. The surface of the worn samples was investigated by
    utilizing SEM to identify the wear mechanisms corresponding to the different compositions. In addition, a finite
    elment model (FEM) was developed to ascertain the thickness of the worn layer and the generated stressed
    on the surfaces of the nanocomposite throughout the friction process.

subjects

  • Industrial Engineering

keywords

  • polymethyl methacrylate nanocomposite; cellulose nanocrystals; denture materials; rice husk; polymethyl methacrylate (pmma); wear resistance