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Layer-by-layer modified low density cellulose fiber networks: A sustainable and fireproof alternative to petroleum based foams
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fibre Technology.ORCID iD: 0000-0001-9856-6536
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fibre Technology. KTH, School of Engineering Sciences (SCI), Centres, VinnExcellence Center BiMaC Innovation.ORCID iD: 0000-0002-5286-333X
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fibre Technology. KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center.ORCID iD: 0000-0001-8622-0386
2020 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 230, article id 115616Article in journal (Refereed) Published
Abstract [en]

Wood-based cellulose fibers were used to prepare porous, low density and wet-stable fiber networks (FN). Multilayer coatings consisting of chitosan (CH), sodium hexametaphosphate (SHMP) and inorganic nanoparticles comprising of either sodium montmorillonite (MMT), sepiolite (SEP) or colloidal silica (SNP) were deposited by the layer-by-layer (LbL) technique onto FNs in an effort to impart flame-retardancy. A simulated fire scenario measured by cone calorimetry showed that five quadlayers (QL) of CH/SHMP/CH/MMT, CH/SHMP/CH/SEP and CH/SHMP/CH/SNP can produce significant reduction in peak heat release rate (pkHRR). In detail, the coating containing SEP showed the largest reduction of the pkHRR by 47% relative to the uncoated FN. MMT and SEP coated FNs were also able to self-extinguish fire and to retain their shapes after direct exposure to a methane flame. This study hence shows that the LbL assembly is a highly effective way to impart flame-retardant properties to this new type of porous FN.

Place, publisher, year, edition, pages
Elsevier Ltd , 2020. Vol. 230, article id 115616
Keywords [en]
Cellulose fiber, Flame-retardant, Layer-by-layer assembly, Thermal stability, Cellulose, Fireproofing, Flame retardants, Inorganic coatings, Multilayers, Nanoparticles, Silica, Sodium compounds, Textile fibers, Thermodynamic stability, Flame retardant properties, Inorganic nanoparticle, Layer-by-layer assemblies, Layer-by-layer techniques, Peak heat release rates, Sodium hexametaphosphate, Sodium montmorillonite, Wood
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-267955DOI: 10.1016/j.carbpol.2019.115616ISI: 000504402300056PubMedID: 31887896Scopus ID: 2-s2.0-85075903424OAI: oai:DiVA.org:kth-267955DiVA, id: diva2:1420995
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Available from: 2020-04-01 Created: 2020-04-01 Last updated: 2020-04-01Bibliographically approved

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Köklükaya, OruçLópez Durán, VeronicaWågberg, Lars
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Fibre TechnologyVinnExcellence Center BiMaC InnovationWallenberg Wood Science Center
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