The mechanical and physical properties of microcrystalline cellulose (MCC)/sisal/PMMA hybrid composites for dental applications

Abstract

The study on polymethyl methacrylate (PMMA)-based composites in dental applications have gained much interest in recent years, resulting in many interesting studies worldwide. In those research, various filler types of reinforcing PMMA have been studied extensively. This study combines the microcrystalline cellulose (MCC) particles (0, 1, 2, 3, 5 vol.%) and sisal fiber to strengthen PMMA. We investigate their effects on the flexural, impact, hardness, compressive strength, water absorption, and thermal properties of (MCC)/sisal/PMMA hybrid composites. XRD, SEM, universal testing machine (UTM), hardness Vickers, TGA, and ANSYS Workbench 2022 R1 software are utilized to characterize the properties of the composite. Adding MCC to alkali-treated sisal/PMMA decreases the flexural and impact strengths but increases the hardness. Adding 1 and 2 vol.% MCC produces maximum flexural and impact strength and hardness values. Simulation on a composite added with 1% MCC by applying a full force load of 14.4 N yields compressive strength of 42.56 MPa. Thermal stability of all composites with and without MCC shows similarity until 250°C but gradually degrades at over 250°C, particularly for composites with MCC. Besides, as the addition of MCC increases, the water absorption also increases, with the lowest value of 37.54 µg/mm3 obtained by the composite added with 1 vol.% MCC, which is within the range of the standard dental materials.

Influence of Novel SrTiO3/MnO2 Hybrid Nanoparticles on Poly(methyl methacrylate) Thermal and Mechanical Behavior

“…One of the approaches to enhance the mechanical performance of PMMA is by introducing fillers that can tune both, mechanical and functional properties. Numerous studies have presented improvements in targeted PMMA properties materials by incorporating fibers or nanoparticles [ 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. Among the versatile selection of nanoparticles, silica (SiO 2 ), alumina (Al 2 O 3 ), titania (TiO 2 ), and zirconia (ZrO 2 ) are the most investigated as reinforcements for PMMA, due to their mechanical and antibacterial potential [ 17 , 18 , 19 , 20 , 21 , 22 ].…”

Effect of chemical treatment on physico-chemical properties of a novel extracted cellulosic Cryptostegia grandiflora fiber ∗

“…There are many natural fibers extracted from different parts of plants and transformed into low-density polymer composites for various applications [14][15][16][17][18]. Most importantly, the performance of the composites is based on the functional properties of the reinforcement element, interfacial bonding between fiber and polymer, and the type of polymer matrix used for the composite fabrication.…”