Facile preparation of uniform polydopamine particles and its application as an environmentally friendly flame retardant for biodegradable polylactic acid

Benjamin Tawiah, Bin Yu, Anthony Chun Yin Yuen, Bin Fei

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

The demand for environmentally benign flame retardants for biodegradable polymers has become particularly necessary due to their inherently “green” nature. This work reports intrinsically non-toxic polydopamine (PDA) particles as an efficient and environmentally friendly flame retardant for polylactic acid (PLA). 5 wt% PDA loading resulted in a 22% reduction in the peak heat release rate, 34.7% increase in the fire performance index, and lower CO2 production compared to neat PLA. A limiting oxygen index (LOI) value of 27.5% and a V-2 rating was achieved in the UL-94 vertical burning test. Highly aggregated amorphous particulate char was formed with the increasing content of PDA, and a significant reduction in evolved pyrolysis gaseous products was achieved for the PLA/PDA composites as compared with control PLA. This work provides important insight into the potential commercial application of PDA alone as an efficiently green, environmentally benign flame retardant for bioplastic PLA.

Original languageEnglish
Pages (from-to)485-503
Number of pages19
JournalJournal of Fire Sciences
Volume38
Issue number6
DOIs
Publication statusPublished - Nov 2020

Keywords

  • environmentally friendly
  • flame retardant
  • Polydopamine
  • polylactic acid
  • thermal properties

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Mechanics of Materials
  • Mechanical Engineering

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