Synergistic Effect of Layer-by-Layer Assembled Thin Films Based on Clay and Carbon Nanotubes To Reduce the Flammability of Flexible Polyurethane Foam

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

30 Scopus Citations
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Author(s)

  • Haifeng Pan
  • Ying Pan
  • Wei Wang
  • Lei Song
  • Yuan Hu

Detail(s)

Original languageEnglish
Pages (from-to)14315 - 14321
Journal / PublicationIndustrial & Engineering Chemistry Research
Volume53
Issue number37
Online published8 Sep 2014
Publication statusPublished - 17 Sep 2014

Abstract

A flame retardant hybrid coating based on montmorillonite (MMT) and carbon nanotubes (CNT) was deposited on the surface of flexible polyurethane (PU) foam by a layer-by-layer assembly method. First, chitosan-wrapped carbon nanotubes (CH-CNT) were prepared via simple mixing and ultrasound of CNT (2 mg mL(-1)) and chitosan (5 mg mL(-1)) in 1% acetic acid aqueous solution. Then, coated flexible PU foams were prepared by alternatively submerging the foam into CH-CNT suspension, MMT suspension, and alginate solution. ATR-FTIR results showed that MMT/CNT based coatings have been successfully deposited on the surface of flexible PU foam. SEM images indicated the formation of the percolated network structure between MMT and CNT. Cone calorimeter results showed that all coated flexible PU foams have lower peak heat release rates, an at least 43% reduction. This dramatically reduced fire hazard was ascribed to the MMT/CNT based network structure, which showed an excellent physical barrier effect.

Citation Format(s)

Synergistic Effect of Layer-by-Layer Assembled Thin Films Based on Clay and Carbon Nanotubes To Reduce the Flammability of Flexible Polyurethane Foam. / Pan, Haifeng; Pan, Ying; Wang, Wei; Song, Lei; Hu, Yuan; Liew, Kim Meow.

In: Industrial & Engineering Chemistry Research, Vol. 53, No. 37, 17.09.2014, p. 14315 - 14321.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal