Advanced Intelligent Systems, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

4D printing with carbon nanotube (CNT)‐reinforced polymers enables advanced shape‐changing materials but faces challenges in CNT dispersion and performance. This study addresses these limitations by functionalizing CNTs polyethylene glycol (PEG), significantly enhancing interfacial bonding within biocompatible polyvinyl chloride (PVC)‐polycaprolactone (PCL) composites. The composites, tailored for biomedical applications a glass transition temperature (T g ) of 37–41 °C, exhibit enhanced mechanical, thermal, shape‐memory properties. At 0.5 wt% CNT, the composite achieves 25% increase tensile strength, 95.78% shape fixity, 5‐s recovery time, offering an optimal balance flexibility, rapid recovery. Higher concentrations (5 wt%) further improve thermal stability, increasing decomposition 20 °C storage modulus 670 MPa, although ductility is reduced. PEG grafting prevents agglomeration, enabling high filler loading without compromising printability, as confirmed through uniform nanoparticle defect‐free fused deposition modeling (FDM)‐printed structures. These intelligent composites combine biocompatibility, durability, excellent performance, making them suitable diverse structural applications, such adaptive medical devices, ergonomic shoe soles, wearable biosensors. novel material provides versatile platform high‐performance, 4D‐printed systems that address current polymer nanocomposites advance engineering innovations.

Язык: Английский