Thanks to textile research at WSU, the development of smart fabrics that could one day monitor heart rates or blood pressure may be closer than we think. (Composite featuring images by Maridav, Khayrul, and Lagunov on Adobe Stock)

Researchers have demonstrated a 3D ink printing method for so-called smart fabrics that continues to perform well after repeated washings and abrasion tests. The research represents a breakthrough in smart fabric comfort and durability, as well as using a process that is more environmentally friendly.

They used direct ink writing 3D printing technology to print solutions of polybutylene succinate — a biodegradable polyester that is compatible with natural fibers — containing carbon nanotubes onto two types of fabric. The printed fabrics showed excellent electrical conductivity, mechanical strength, gauge factor and stability under repeated strains, and the solution’s ability to penetrate and bond with fibers gave the fabrics an enhanced washability and resistance to abrasion.

They tested printed fabrics for tensile strength, electrical conductivity, their ability to function as motion sensors, and other qualities. They found that the fabrics continued to perform well after 20 cycles of washing and drying, and the surfaces did not scratch or crack after 200 cycles of abrasion testing or 500 cycles of tensile cyclic testing.

The team also used a biodegradable, nontoxic solvent, Cyrene, for processing, which is more environmentally friendly than commonly used toxic solvents.

Source 

Topics:
3D Printing & Additive Manufacturing Health Monitors and Activity Trackers Materials Medical Polymers Wearables

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