Print Email Facebook Twitter Flame retardant property of flax fabrics coated by extracellular polymeric substances recovered from both activated sludge and aerobic granular sludge Title Flame retardant property of flax fabrics coated by extracellular polymeric substances recovered from both activated sludge and aerobic granular sludge Author Kim, Nam Kyeun (The University of Auckland) Mao, Ningtao (University of Leeds) Lin, Richard (The University of Auckland) Bhattacharyya, Debes (The University of Auckland) van Loosdrecht, Mark C.M. (TU Delft BT/Environmental Biotechnology) Lin, Y. (TU Delft Environmental Fluid Mechanics) Date 2020 Abstract In this research, extracellular polymeric substances (EPS), such as EPSflocs and EPSgranules, were successfully extracted from activated and aerobic granular sludge, respectively, and tested as bio-based flame retardant materials. Flax fabric was coated by the biopolymeric substances and its flammability was evaluated based on a vertical burning test defined in US Federal Aviation Regulation. Both EPSflocs and EPSgranules coated flax fabrics achieved the self-extinguishment due to effective char formation. In particular, the result of the EPSgranules coated sample met the aviation requirements for the aircraft interior. Moreover, the presence of carbonated hydroxyapatite was identified in EPSgranules char residue by using FTIR and XRD analysis. It can contribute to the self-extinguishing property of the fabric by enhancing char formation. Thermogravimetric analysis also demonstrated that EPSgranules coated flax was able to produce greater amount of char residue and its decomposition rate was significantly reduced. This research indicates that there is a great potential to use this biopolymer as a resource for developing high performance bio-inspired flame retardant materials and contribute to a circular economy. Subject Aerobic granular sludgeExtracellular polymeric substanceFlame retardantFlax fabric To reference this document use: http://resolver.tudelft.nl/uuid:268e5f9a-8a6a-413b-a63c-5279af6645c2 DOI https://doi.org/10.1016/j.watres.2019.115344 ISSN 0043-1354 Source Water Research, 170 Part of collection Institutional Repository Document type journal article Rights © 2020 Nam Kyeun Kim, Ningtao Mao, Richard Lin, Debes Bhattacharyya, Mark C.M. van Loosdrecht, Y. Lin Files PDF 1_s2.0_S0043135419311182_main.pdf 1.85 MB Close viewer /islandora/object/uuid:268e5f9a-8a6a-413b-a63c-5279af6645c2/datastream/OBJ/view