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The use of a pilot-scale continuous paper process for fire retardant cellulose-kaolinite nanocomposites
RISE - Research Institutes of Sweden. KTH Royal Institute of Technology, Sweden. (MoRe Research Örnsköldsvik AB)
RISE - Research Institutes of Sweden. KTH Royal Institute of Technology, Sweden. (MoRe Research Örnsköldsvik AB)
KTH Royal Institute of Technology, Sweden.
RISE - Research Institutes of Sweden. (MoRe Research Örnsköldsvik AB)
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2018 (English)In: Composites Science And Technology, ISSN 0266-3538, E-ISSN 1879-1050, Vol. 162, p. 215-224Article in journal (Refereed) Published
Abstract [en]

Nanostructured materials are difficult to prepare rapidly and at large scale. Melt-processed polymer-clay nanocomposites are an exception, but the clay content is typically below 5 wt%. An approach for manufacturing of microfibrillated cellulose (MFC)/kaolinite nanocomposites is here demonstrated in pilot-scale by continuous production of hybrid nanopaper structures with thickness of around 100 μm. The colloidal nature of MFC suspensions disintegrated from chemical wood fiber pulp offers the possibility to add kaolinite clay platelet particles of nanoscale thickness. For initial lab scale optimization purposes, nanocomposite processing (dewatering, small particle retention etc) and characterization (mechanical properties, density etc) were investigated using a sheet former (Rapid Köthen). This was followed by a continuous fabrication of composite paper structures using a pilot-scale web former. Nanocomposite morphology was assessed by scanning electron microscopy (SEM). Mechanical properties were measured in uniaxial tension. The fire retardancy was evaluated by cone calorimetry. Inorganic hybrid composites with high content of in-plane oriented nanocellulose, nanoclay and wood fibers were successfully produced at pilot scale. Potential applications include fire retardant paperboard for semi structural applications and as reinforcement mats in molded thermoset biocomposites. 

Place, publisher, year, edition, pages
Elsevier Ltd , 2018. Vol. 162, p. 215-224
Keywords [en]
Biocomposite, Hybrid, Mechanical properties, Microfibrillated cellulose, Nanocellulose, Cellulose, Composite materials, Density (specific gravity), Kaolinite, Scanning electron microscopy, Suspensions (fluids), Wood products, Bio-composites, Continuous production, Inorganic hybrid composites, Microfibrillated cellulose (MFC), Nanocomposite morphology, Polymer-clay nanocomposites, Structural applications, Nanocomposites
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Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-42467DOI: 10.1016/j.compscitech.2018.04.032Scopus ID: 2-s2.0-85046634249OAI: oai:DiVA.org:ri-42467DiVA, id: diva2:1384095
Note

Funding details: Wallenberg Wood Science Center; Funding details: Kempestiftelserna; Funding details: Stiftelsen för Strategisk Forskning, RMA11-0065; Funding text 1: The Kempe foundation is gratefully acknowledged for financial support. In addition, the authors would like to acknowledge the FireFoam project funded by SSF ( RMA11-0065 ) in Sweden, also the financial support from the Wallenberg Wood Science Center and to Qiliang Fu for the support with the schematic representation of the structure of the nanocomposite.

Available from: 2020-01-09 Created: 2020-01-09 Last updated: 2020-01-09Bibliographically approved

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