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Boron/nitrogen flame retardant additives cross-linked cellulose nanofibril/montmorillonite aerogels towards super low flammability and improved mechanical properties
dc.contributor.author | Wang, Liang |
dc.contributor.author | Sánchez Soto, Miguel |
dc.contributor.author | Fang, Jie |
dc.contributor.author | Xia, Zhao-Peng |
dc.contributor.author | Liu, Yong |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica |
dc.date.accessioned | 2019-06-26T12:45:42Z |
dc.date.available | 2020-04-07T00:26:14Z |
dc.date.issued | 2019-04-07 |
dc.identifier.citation | Wang, L. [et al.]. Boron/nitrogen flame retardant additives cross-linked cellulose nanofibril/montmorillonite aerogels towards super low flammability and improved mechanical properties. "Polymers for advanced technologies", 7 Abril 2019, vol. 30, núm. 7, p. 1807-1817. |
dc.identifier.issn | 1042-7147 |
dc.identifier.uri | http://hdl.handle.net/2117/143187 |
dc.description.abstract | Low-flammability freeze-dried cellulose nanofibril (CNF)/sodium montmorillonite (MMT) aerogels with improved mechanical properties were fabricated via a facile cross-linking of boric acid (BA) and melamine-formaldehyde (MF) resins. Scanning electron microscopy analysis showed that BA cross-linking reduced the interspacing of layered CNF/MMT aerogels whereas introduction of MF formed polymeric fibrils that connected the layers. These changes on microstructures resulted in the improvement on compressive mechanical properties of the cross-linked aerogels. Moreover, the boron (B)/nitrogen (N) containing flame retardant cross-linkers greatly increased the limiting oxygen index values that could reach 85% and leveled the UL-94 rating from no rating to V-0. Cone calorimetric results suggested that BA and MF induced a synergistic effect on the flame retardant properties of the CNF/MMT aerogels. However, the thermal conductivity was little affected because pore structure and size was not substantially modified. This simple approach fabricated highly flame-resistant and mechanically strong CNF-based aerogels that could be used in various engineering fields |
dc.format.extent | 11 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Enginyeria dels materials |
dc.subject.lcsh | Nanofibers |
dc.subject.lcsh | Foamed materials |
dc.subject.other | Cellulose nanofibril |
dc.subject.other | Flame retardancy |
dc.subject.other | Foams |
dc.subject.other | Mechanical testing |
dc.title | Boron/nitrogen flame retardant additives cross-linked cellulose nanofibril/montmorillonite aerogels towards super low flammability and improved mechanical properties |
dc.type | Article |
dc.subject.lemac | Nanofibres |
dc.subject.lemac | Materials escumosos |
dc.contributor.group | Universitat Politècnica de Catalunya. e-PLASCOM - Plàstics i Compòsits Ecològics |
dc.identifier.doi | 10.1002/pat.4613 |
dc.relation.publisherversion | https://onlinelibrary.wiley.com/doi/abs/10.1002/pat.4613 |
dc.rights.access | Open Access |
local.identifier.drac | 24249856 |
dc.description.version | Postprint (author's final draft) |
local.citation.author | Wang, L.; Sanchez-Soto, M.; Fang, J.; Xia, Z.; Liu, Y. |
local.citation.publicationName | Polymers for advanced technologies |
local.citation.volume | 30 |
local.citation.number | 7 |
local.citation.startingPage | 1807 |
local.citation.endingPage | 1817 |
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