# Bacterial Nanocellulose Effect into Wettability and Thermal Stability of Carbon Fiber via Layer-by-Layer for LED Circuit Application

## TL;DR

This study shows how adding bacterial nanocellulose to carbon fiber composites improves their water resistance and heat stability, making them suitable for LED circuits.

## Contribution

The novel use of bacterial nanocellulose to enhance carbon fiber composites for low-voltage electronics is introduced.

## Key findings

- BNC increased the contact angle from 79.6° to 106.46°, showing improved hydrophobicity.
- Thermal stability improved with higher residual mass and final degradation temperature.
- LED tests confirmed efficient current flow with minimal voltage drop in CF/BNC composites.

## Abstract

This study aimed to investigate how bacterial nanocellulose
(BNC)
affects the wettability and thermal stability in carbon-fiber (CF)
polymer composites. CF/BNC laminates were fabricated through layer-by-layer
hot pressing and evaluated by using contact-angle measurements, thermogravimetric
analysis, and low-voltage electrical testing. The CF/BNC interface
enhanced nanoscale interlocking, increasing the contact angle from
79.6° to 106.46°. Thermal stability improved, as shown by
final degradation temperature and higher residual mass, and electrical
tests using a light-emitting diode (LED) confirmed efficient current
flow with minimal voltage drop. The results demonstrate a pathway
for multifunctional, hydrophobic, and thermally stable composites
for low-voltage electronic applications.