Novel, injection molded all-polyethylene composites for potential biomedical implant applications

This study aimed to create a self-reinforced composite material that can be processed by injection molding and other standard thermoplastic processing techniques potentionally used as implant material. Self-reinforcement in biomaterials is desirable because it does not compromise biocompatibility improves biofunctionality through improved mechanical performance. Self-reinforced composites currently specialized, expensive unproductive methods; hence we simpler alternative works with biocompatible materials. We combined high-density polyethylene matrix high-performance (Dyneema®) fibers. Before making the structure, fibers were cross-linked gamma irradiation prevent their melting maintain structural integrity. The withstood compounding twin-screw extrusion subsequent molding. effect of dose on processability, crystallinity, morphology, performance cytotoxicity was investigated. found adding 20 m% 200 kGy irradiated Dyneema® increased tensile modulus 22.0%, strength 71.1%, while both its constituents all biocompatible. 41.1 MPa strength, 1.62 GPa modulus, 64 Shore D hardness quite similar those ultra-high molecular weight polyethylene, which widely implants. Still, introduced this paper shows no issues melt flow characteristics. These achievements are self-reinforcing methods, but manufacturing method presented here economically realized available technologies machines.