MXene/chitosan nanocoating for flexible polyurethane foam towards remarkable fire hazards reductions

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

19 Scopus Citations
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Author(s)

  • Bo Lin
  • Anthony Chun Yin Yuen
  • Ao Li
  • Yang Zhang
  • Timothy Bo Yuan Chen
  • Shuhua Peng
  • Wei Yang
  • Hong-Dian Lu
  • Qing Nian Chan
  • Guan Heng Yeoh
  • Chun H. Wang

Detail(s)

Original languageEnglish
Article number120952
Journal / PublicationJournal of Hazardous Materials
Volume381
Online published31 Jul 2019
Publication statusPublished - 5 Jan 2020

Abstract

MXene/chitosan nanocoating for flexible polyurethane foam (PUF) was prepared via layer-by-layer (LbL) approach. MXene (Ti3C2) ultra-thin nanosheets were obtained through etching process of Ti3AlC2 followed by exfoliation. The deposition of MXene/chitosan nanocoating was conducted by alternatingly immersing the PUF into a chitosan solution and a Ti3C2 aqueous dispersion, which resulted in different number of bilayers (BL) ranging from 2, 5 and 8. Owing to the utilization of ultra-thin Ti3C2 nanosheets, the weight gain was only 6.9% for 8 BL coating of PUF, which minimised the unfavourable impact on the intrinsic properties of PUF. The Ti3C2/chitosan coating significantly reduced the flammability and smoke releases of PUF. Compared with unmodified PUF, the 8 BL coating reduced the peak heat release rate by 57.2%, alongside with a 65.5% reduction in the total heat release. The 8 BL coating also showed outstanding smoke suppression ability with total smoke release decreased by 71.1% and peak smoke production rate reduced by 60.3%, respectively. The peak production of CO and CO2 gases also decreased by 70.8% and 68.6%, respectively. Furthermore, an outstanding char formation performance of 37.2 wt.% residue was obtained for 8 BL coated PUF, indicating the excellent barrier and carbonization property of the hybrid coating.

Research Area(s)

  • Chitosan, Fire safety, Layer-by-layer deposition, MXene, Nanocoating

Citation Format(s)

MXene/chitosan nanocoating for flexible polyurethane foam towards remarkable fire hazards reductions. / Lin, Bo; Yuen, Anthony Chun Yin; Li, Ao; Zhang, Yang; Chen, Timothy Bo Yuan; Yu, Bin; Lee, Eric Wai Ming; Peng, Shuhua; Yang, Wei; Lu, Hong-Dian; Chan, Qing Nian; Yeoh, Guan Heng; Wang, Chun H.

In: Journal of Hazardous Materials, Vol. 381, 120952, 05.01.2020.

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