Improve Flexural Strength of PMMA/SR Polymer Blend by Reinforcement with Carbon Fibers as Prosthetic Foot Polymer Material

Prosthetic Foots or artificial limbs, are fabricated devices that provide amputees with a replacement for their missing limb, restoring some function , The development of polymer blend materials has, in recent years, led to technological advances across a wide range of applications in modern orthopedic medicine and prosthetic devices , In this study poly methyl methacrylate (PMMA) / silicone rubber ( SR ) reinforcement by carbon fiber ( CF ) blends has been developed as prosthetic foot materialby improved flexural properties as suitable polymer blend material for this application. Polymer blends (PMMA:SR) 90:10 ; 80:20 ; 70:30 ; 60:40 ; 50:50 were prepared reinforcements each one by carbon fibers from 5-15% ( CF ) the reinforcement material was short length and randomly , then flexural test was carried out for prepared specimens , and effect of reinforcement by carbon fibers on flexural strength of polymer blends were determined . From the results showed that the flexural strength, flexural modulus of five polymer blends was increased as reinforcement material increased and improved as best comparative prosthetic foot material.