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Oriented Clay Nanopaper from Biobased Components Mechanisms for Superior Fire Protection Properties
Politecn Torino, I-15121 Alessandria, Italy.
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2015 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 7, no 10, 5847-5856 p.Article in journal (Refereed) Published
Abstract [en]

The toxicity of the most efficient fire retardant additives is a major problem for polymeric Materials. Cellulose nanofiber (CNF)/clay nanocomposites, with unique brick-and-mortar structure and prepared by simple filtration, are characterized from the morphological point of view by scanning electron microscopy and X-ray diffraction. These nanocomposites have superior fire protection properties to Other clay nanocomposites and fiber composites. The Corresponding mechanisms are evaluated in terms of flammability (reaction to a flame) and cone calorimetry (exposure to heat flux). These two tests provide a wide spectrum characterization of fire protection properties in CNF/montmorrilonite (MTM) Materials. The morphology of the collected residues after flammability testing is investigated. In addition, thermal and thermo-oxidative stability are evaluated by thermogravimetric analyses performed in inert (nitrogen) and oxidative (air) atmospheres. Physical and chemical mechanisms are identified and related to the unique nanostructure and its low thermal conductivity, high gas barrier properties and CNF/ MTM interactions for char formation.

Place, publisher, year, edition, pages
2015. Vol. 7, no 10, 5847-5856 p.
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Polymer Chemistry
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URN: urn:nbn:se:kth:diva-164441DOI: 10.1021/am509058hISI: 000351420300027PubMedID: 25723913Scopus ID: 2-s2.0-84925358469OAI: oai:DiVA.org:kth-164441DiVA: diva2:810006
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QC 20150506

Available from: 2015-05-06 Created: 2015-04-17 Last updated: 2017-12-04Bibliographically approved

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Berglund, Lars

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