Injection molding is a widely used process for the production of plastic parts, and it has also been explored for plasticized starch-based materials. However, the high viscosity and poor flow properties of these materials make injection molding a challenging process. Researchers have studied the behavior and processing parameters of starch injection to overcome these challenges. This article discusses the main difficulties associated with injection molding of plasticized starch, such as adhesion to the mold, distortion, and shrinkage of parts. It also highlights the drawbacks related to product performance and potential solutions such as the use of natural fibers or blending with polyester in formulations.
