Synthesis of anhydrous manganese hypophosphite microtubes for simultaneous flame retardant and mechanical enhancement on poly(lactic acid)

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Wei Yang
  • Wen-Jie Yang
  • Benjamin Tawiah
  • Yang Zhang
  • Li-Li Wang
  • San-E Zhu
  • Timothy Bo Yuan Chen
  • Anthony Chun Yin Yuen
  • Yun-Feng Liu
  • Jing-Yu Si
  • En-Zhu Hu
  • Hong-Dian Lu
  • Kun-Hong Hu
  • Qing Nian Chan
  • Guan Heng Yeoh

Detail(s)

Original languageEnglish
Pages (from-to)44-50
Journal / PublicationComposites Science and Technology
Volume164
Early online date16 May 2018
Publication statusPublished - 18 Aug 2018

Abstract

In this study, a facile solvothermal approach for preparing anhydrous manganese hypophosphite (A-MnHP) microtubes was demonstrated for the first time by using manganese chloride and hypophosphorous acid in mixed solvents, followed by fabricating A-MnHP-based poly(lactic acid) (PLA) composites via a melt-blending method. Owing to the unique morphology of A-MnHP, the tensile strengths of the PLA composites with 1 wt%, 5 wt% and 10 wt% A-MnHP are approximately 17%, 7% and 3% higher than those of neat PLA, respectively. Compared to neat PLA, PLA composite containing 15 wt% A-MnHP (PLA/A-MnHP15) exhibited lower peak heat release rate (50% reduction), total heat release (13% reduction), peak CO2 and CO productions (50% and 53% reductions), which also passed UL 94 V-2 rating test with high limiting oxygen index (27.5%). The combustion temperature change during the cone calorimeter tests showed that PLA/A-MnHP15 showed the lowest combustion temperature, achieving the best fire safety performance. Residue analysis indicated that the presence of A-MnHP resulted in the formation of continuous and compact char residues composed of aromatic structure and phosphorous-rich inorganic structure, retarding the permeation of heat, oxygen transfer and escape of volatile degradation products.

Research Area(s)

  • Flame retardant properties, Manganese hypophosphite, Mechanical properties, Poly(lactic acid), Polymer-matrix composites (PMCs)

Citation Format(s)

Synthesis of anhydrous manganese hypophosphite microtubes for simultaneous flame retardant and mechanical enhancement on poly(lactic acid). / Yang, Wei; Yang, Wen-Jie; Tawiah, Benjamin; Zhang, Yang; Wang, Li-Li; Zhu, San-E; Chen, Timothy Bo Yuan; Yuen, Anthony Chun Yin; Yu, Bin; Liu, Yun-Feng; Si, Jing-Yu; Hu, En-Zhu; Lu, Hong-Dian; Hu, Kun-Hong; Chan, Qing Nian; Yeoh, Guan Heng.

In: Composites Science and Technology, Vol. 164, 18.08.2018, p. 44-50.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review