Reinforced Polymers

Project 01: Development of a Flexible Resonator via Additive Manufacturing for Intelligent Energy Harvesting Applications

This research project leverages additive manufacturing techniques, particularly FDM 3D printing, to develop innovative polymer composites reinforced with piezoelectric fillers like BaTiO3 or PZT in matrices such as PVDF or PLA, specifically for piezoelectric energy harvesters (PEH). It addresses key challenges including homogeneous filler dispersion and optimization of printing parameters to enhance piezoelectric properties, with a focus on how filler concentration and printed structure geometry influence performance. The design features a novel network with a negative Poisson's ratio, enabling multidirectional and multimodal functionality: a single excitation in the x-direction triggers bi-axial displacement in x and y (activating d31 and d32 modes), while z-direction excitation activates the d33 mode. Comprehensive characterizations will evaluate mechanical and piezoelectric properties, alongside real-world performance tests for resonators. The project explores complex geometries and multilayer structures unique to additive manufacturing, supported by simulation models to predict and optimize device performance prior to fabrication. Finally, it assesses long-term durability, reliability, and integration potential into alarm systems for commercial, industrial, and residential applications—embedding PEH under floor slabs to convert compressive footsteps into electrical signals for triggering integrated alerts

Project 2: Development of a natural fiber polymer composite filament for FDM

Current sustainable development policies regarding plastics are based on three core principles: respecting the environment and human health, reducing waste and pollutants, and replacing petroleum-derived materials with readily available renewable resources. The incorporation of natural fibers allows for the modification of polymer properties compared to the neat polymer, opening up broad prospects for various applications of these fiber-reinforced composites. Integrating these natural fibers into a polymer matrix represents a highly promising research area for economic, environmental, and marketing reasons.

This research project aims to develop a new type of composite yarn that is more durable and efficient by incorporating polymers with natural fibers, such as plant and kernel fibers (e.g., olive, date). The goal is to obtain a composite with high mechanical strength, appropriate stiffness, and excellent deformation resistance, enabling its use in diverse applications while minimizing environmental impact. The use of these natural fibers is driven by their superior properties, such as low density and biodegradability, which enhance both mechanical and thermal performance while simultaneously reducing the environmental footprint of polymer matrices like polylactic acid (PLA) and acrylonitrile butadiene styrene (ABS).

These composite materials offer a dual advantage: besides reducing the carbon footprint through the recycling of agricultural waste, they enable the development of lightweight, biodegradable, and cost-effective materials with enhanced mechanical and thermal properties. Such materials can be applied across various sectors, including the automotive, aerospace, and construction industries, replacing traditional composites that are less sustainable and less environmentally friendly.