SYNTHESIS OF POLYMETHYLMETHACRYLATE (PMMA) WITH MINIEMULSION POLYMERIZATION AND ADDITION OF GRAPHENE TO REDUCE EXOTHERM TEMPERATURE FOR BONE CEMENT APPLICATION

• Main Author: Putra N Simorangkir, Adil
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/67868
• Institution: Institut Teknologi Bandung

-There are still many cases of fractures that still occur, causing the need for bone implants to be higher. PMMA bone cement is a bone implant material used in bone replacement procedures because the polymerization process is fast, easy to apply, good mechanical strength, and acceptable to the body. However, the polymerization reaction of PMMA bone cement produces heat with a temperature of 80°C-100°C which can cause bone tissue damage. Therefore, it is necessary to make modifications to PMMA to solve the problem. In this study, PMMA synthesis was carried out with miniemulsion polymerization with variations in SDS surfactants and virgin coconut oil costabilizers. The resulting PMMA will be used in bone cement applications. In this study, graphene was also added to PMMA bone cement to reduce exotherm temperature. Graphene, which acts as a radical scavenger, can reduce the temperature of PMMA bone cement. The addition of graphene 1 wt% has the lowest temperature of 43.13 °C. This temperature is 46% lower than the temperature of commercial PMMA bone cement. The addition of graphene also provides reinforcement to PMMA bone cement. The addition of graphene of 0.25 wt% has the highest tensile strength of 39.79 MPa (59% higher than commercial PMMA bone cement).