Carbon Nanotubes (CNTs) and Graphene Oxide (GO) hybrid Enhanced Canola Protein Isolate (CPI) Bioadhesive for Interior Wood Applications.
Research Poster Engineering 2025 Graduate ExhibitionPresentation by Michael Enemuo
Exhibition Number 29
Abstract
Growing concerns over the use of carcinogenic formaldehyde-based wood adhesives drive the need for sustainable alternatives. This study explores a novel nanocomposite adhesive made from canola protein isolate (CPI), reinforced with carbon nanotubes (CNTs) and graphene oxide (GO), to enhance bio-based adhesive performance. CNTs contribute mechanical strength, electrical conductivity, and thermal stability, while GO provides a large surface area, good dispersibility, and enhanced adhesion. The synergistic interaction between these nanomaterials significantly improves the adhesive properties of CPI. The study examined the impact of varying CNT-GO ratios on CPI's adhesive strength under dry, wet, and soaked conditions. Results showed a positive correlation between increasing CNT-GO concentrations and adhesive performance. The adhesive strength markedly increased at a 0.5/0.5 (CNT/GO) ratio, especially in dry conditions. The optimal shear strength, however, was observed at a 0.3/0.7 ratio across all conditions. The thermogravimetric analysis confirmed that higher CNT-GO ratios enhanced the thermal stability of the nanocomposite, as indicated by increased weight loss percentages. This reflects improved resistance of the CPI matrix to thermal degradation. These findings highlight the importance of optimizing CNT-GO ratios for superior performance under diverse conditions. Overall, this study demonstrates the potential of CPI-CNT-GO nanocomposites as more sustainable alternatives to traditional formaldehyde-based adhesives, offering a promising solution to reduce the environmental and health risks associated with conventional wood adhesives.
Importance
This study is significant as it introduces a sustainable, high-performance alternative to conventional formaldehyde-based wood adhesives, which pose health and environmental risks. By utilizing canola protein isolate (CPI), a renewable byproduct, and reinforcing it with carbon nanotubes (CNTs) and graphene oxide (GO), the adhesive achieves superior bonding strength, durability, and thermal stability. The nanomaterials enhance moisture resistance, addressing a key limitation of bio-based adhesives. This innovation supports eco-friendly manufacturing, reduces toxic emissions, and aligns with global sustainability goals. Additionally, it provides a cost-effective, renewable solution for wood applications. The study bridges nanotechnology and green chemistry, paving the way for safer, high-performance adhesives in construction, furniture, and industrial applications while promoting healthier indoor environments.