4D PRINTING OF STIMULI-RESPONSIVE POLYMERS

Abstract

Polymers have gained significant research interest for their versatile applications and the ability to mimic biological instincts. Stimuli-responsive polymers (SRPs), also known as "smart" or "intelligent" polymers, can detect and rapidly adjust their properties in response to various stimuli. These polymers hold immense potential in controlled drug delivery, sensing technology, and tissue engineering. Among smart polymers, shape memory polymers and self-healing materials are particularly intriguing. However, research on smart polymers has focused on mechanisms, neglecting processability. Traditional processing techniques have limitations, while three-dimensional (3D) printing combined with shape memory and self-healing polymers offers a promising solution. This integration enhances product properties, enabling advancements in the field. This thesis provides an overview of stimuli-responsive smart materials and their manufacturing methods, particularly emphasizing shape memory and self-healing materials. A two-way shape memory polyurethane material is designed and fabricated, providing ideas for the design and manufacture of multifunctional smart materials.