High Flame Retardancy of Carbon Nanotubes Reinforced Polyelectrolyte Multilayered Nanocomposites DOI Open Access
Inyoung Lee, Seojin Kim, Jae‐Oh Shim

et al.

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 7, 2025

ABSTRACT In pursuit of multifunctional flame‐retardant coatings, a layer‐by‐layer (LbL) assembly was used to create hybrid nanocoatings by alternating the deposition positively charged chitosan (CH) and negatively sodium lignosulfonate (Lg). Carbon nanotubes (CNT), dispersed in an Lg solution, were incorporated as robust reinforcements polymer nanocomposites. Their high aspect ratio dense network within CH/CNT‐Lg layers resulted coatings that notably thicker heavier compared those constructed without CNT. horizontal flame tests, presence CNT led superior fire resistance. Cone calorimetry further demonstrated incorporating into single coating completely suppressed second peak heat release for polyurethane foam (PUF). Additionally, total smoke release, production, maximum average rate emission, effective combustion reduced 68.9%, 72.7%, 47.7%, 57.3%, respectively, uncoated PUF. These improvements retardancy are attributed enhanced thermal stability char yields provided Overall, given ease applying LbL assembly, this strategy offers promising halogen‐free approach improving safety both natural synthetic fibers.

Language: Английский

High Flame Retardancy of Carbon Nanotubes Reinforced Polyelectrolyte Multilayered Nanocomposites DOI Open Access
Inyoung Lee, Seojin Kim, Jae‐Oh Shim

et al.

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 7, 2025

ABSTRACT In pursuit of multifunctional flame‐retardant coatings, a layer‐by‐layer (LbL) assembly was used to create hybrid nanocoatings by alternating the deposition positively charged chitosan (CH) and negatively sodium lignosulfonate (Lg). Carbon nanotubes (CNT), dispersed in an Lg solution, were incorporated as robust reinforcements polymer nanocomposites. Their high aspect ratio dense network within CH/CNT‐Lg layers resulted coatings that notably thicker heavier compared those constructed without CNT. horizontal flame tests, presence CNT led superior fire resistance. Cone calorimetry further demonstrated incorporating into single coating completely suppressed second peak heat release for polyurethane foam (PUF). Additionally, total smoke release, production, maximum average rate emission, effective combustion reduced 68.9%, 72.7%, 47.7%, 57.3%, respectively, uncoated PUF. These improvements retardancy are attributed enhanced thermal stability char yields provided Overall, given ease applying LbL assembly, this strategy offers promising halogen‐free approach improving safety both natural synthetic fibers.

Language: Английский

Citations

0