Flexural Strength of E-glass-reinforced PMMA

Abstract

Background Poly (methyl 2-methylpropenoate) (PMMA) is one of the most widely accepted biomaterials due to its acceptable advantageous but the limitations associated with these materials make them far from being ideal. So, the present study is to achieve desirable flexural strength by reinforcing PMMA with E-glass fiber. Aim Determination of flexural strength of PMMA by varying the weight percentage of glass fiber (2.5 wt%, 5 wt%, 10 wt%), and by varying the aspect ratio (3 mm/20 µm, 6 mm/20 µm, 12 mm/20 µm) of glass fiber. Materials and methods Specimens prepared using a standard rectangular mold of 62 mm length, 10 mm breadth and 2.5 mm thickness. A total of 60 samples prepared (6 samples in each group) polymer—monomer ratio 2.4:1 by weight used to prepare samples. Flexural strength is tested using universal testing machine Instron. The microstructural analysis using scanning electron microscopy performed in order to understand the fiber matrix bonding. Detailed statistical analysis done by one-way ANOVA. Results Highest flexural strength is observed for the PMMA reinforced with 6 mm/20 µm fiber 2.5 wt%. How to cite this article Mathew M, Shenoy K, Ravishankar KS. Flexural Strength of E-glass-reinforced PMMA. Int J Experiment Dent Sci 2014;3(1):24-28.

The effect of incorporating various reinforcement materials on flexural strength and impact strength of polymethylmethacrylate: A meta-analysis

“…E-glass fiber is the most commonly used fiber for acrylic reinforcement due to its higher mechanical properties, low susceptibility to moisture absorption and hence relatively good long-term stability against water, resistance to chemicals, thermal stability and high melting point, and easy manipulation. [ 32 ] They have better potential despite the difficulty of achieving adequate impregnation of the fibers. [ 41 ] The study showed better FS when compared to unreinforced PMMA.…”

The Influence of Graphene in Improvement of Physico-Mechanical Properties in PMMA Denture Base Resins

“…The modulus of rupture also known as flexural strength represents the highest stress experienced within the material at the moment of its rupture and describes the material’s ability to resist deformation under a certain load [34]. Shakeri et al reported a 32% improvement in flexural strength when loading 0.05% Ag nanoparticles to PMMA denture bases [13], but without the graphene addition.…”

Flexural strength of hydrogen plasma-treated polypropylene fiber-reinforced polymethyl methacrylate denture base material

“…The pattern (rectangular shape 62 mm × 10 mm × 2.5 mm) had the profile of the standard specimens [Figure 1] under consideration. [8]…”