Enhancement of Polytetrafluoroethylene-Polyvinyl Alcohol Nanofibers Triboelectric Effect With Carboxylic Functionalized Multiwalled Carbon Nanotubes Coating

Author

Fernando Viesca, The University of Texas Rio Grande Valley

Date of Award

7-1-2024

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Mechanical Engineering

First Advisor

M Jasim Uddin

Second Advisor

Karen Lozano

Third Advisor

Horacio Vasquez

Abstract

In this study, we fabricated a TENG using Forcespinning® (FS) Polytetrafluoroethylene microfibers (FS-PTFE-MFs) and Electrospun (ES) Polyvinyl alcohol nanofibers (ES-PVA-NFs). The FS-PTFE-MFs were physically linked with functionalized carboxylic multiwall carbon nanotubes (MWCNTs-COOH) employing water dispersions. MWCNTs-COOH were dispersed using three different surfactants: Sodium Dodecyl Sulfate (SDS), Sodium dodecylbenzenesulfonate (SDBS), and Triton X-100 (TX-100). Coated FS-PTFE-MFs were then characterized using a field emission scanning electron microscope (FESEM) with an energy dispersive X-ray spectroscopy (EDS) attachment and Fourier-transform infrared spectroscopy (FTIR). While no significant difference in performance was observed with different surfactants, electrical results of the TENG recorded a notable enhancement of 240% with the addition of MWCNTs-COOH. The open circuit voltage and close circuit current increased from 105.6 V and 0.90 µA to 253.25 V and 2.17 µA, respectively. The TENG device was further tested for its sensory applications in multiple bio-mechanical motions. These results indicated the TENG potential use for long term and cost-effective self-powered body motion sensor.

Comments

Copyright 2024 Fernando Viesca. https://proquest.com/docview/3115725615

Recommended Citation

Viesca, Fernando, "Enhancement of Polytetrafluoroethylene-Polyvinyl Alcohol Nanofibers Triboelectric Effect With Carboxylic Functionalized Multiwalled Carbon Nanotubes Coating" (2024). Theses and Dissertations. 1595.
https://scholarworks.utrgv.edu/etd/1595