Synthesis of zinc porphyrin complex for improving mechanical, UV-resistance, thermal stability and fire safety properties of polystyrene

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

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Author(s)

  • San-E Zhu
  • Yu Zhou
  • Wei-Hao Pan
  • Chun-Xiang Wei
  • Anthony Chun Yin Yuen
  • Timothy Bo Yuan Chen
  • Guan Heng Yeoh
  • Hong-Dian Lu
  • Wei Yang

Detail(s)

Original languageEnglish
Article number136367
Journal / PublicationChemical Engineering Journal
Volume442
Issue numberPart 2
Online published13 Apr 2022
Publication statusPublished - 15 Aug 2022

Abstract

Polystyrene (PS) is one of the most commonly used general plastics. Nonetheless, PS is greatly limited by its inherent disadvantages such as high flammability, low stability and brittleness. To address these issues, 5,10,15,20-tetrakis(4-bromophenyl) porphyrin (TBPP) and zinc 5,10,15,20-tetrakis(4-bromophenyl) porphyrin (Zn-TBPP) were synthesized as multifunctional additives for fabricating high-performance PS composites. Both TBPP and Zn-TBPP showed high thermal stability and excellent UV-absorption, which significantly enhanced the UV-resistance of PS without sacrificing mechanical property after 100 h UV-aging. The addition of 5 wt% Zn-TBPP led to the remarkable improvement of thermal stability of PS (41 °C and 79 °C increases in the thermal decomposition temperature at 5 wt% mass loss under N2 and air, respectively). Moreover, contributed from the strong π-π interaction between porphyrins and PS chains, the mechanical properties of PS were enhanced when 5 wt% Zn-TBPP was added into PS (11.1% increase in tensile strength and 96.6% increase in elongation at break). Furthermore, compared to TBPP/PS, Zn-TBPP/PS exhibited an improved flame retardant performance with 26.0%, 14.4% and 31.5% reduction of peak heat release rate, peak CO and CO2 production respectively, indicating the catalytic flame retardant effect from zinc element.

Research Area(s)

  • Flame retardant, Polystyrene, Porphyrin, Thermal stability, UV-resistance

Citation Format(s)

Synthesis of zinc porphyrin complex for improving mechanical, UV-resistance, thermal stability and fire safety properties of polystyrene. / Zhu, San-E; Yang, Wen-Jie; Zhou, Yu; Pan, Wei-Hao; Wei, Chun-Xiang; Yuen, Anthony Chun Yin; Chen, Timothy Bo Yuan; Yeoh, Guan Heng; Lu, Hong-Dian; Yang, Wei.

In: Chemical Engineering Journal, Vol. 442, No. Part 2, 136367, 15.08.2022.

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