The use of a pilot-scale continuous paper process for fire retardant cellulose-kaolinite nanocompositesShow others and affiliations
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.
Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 162, p. 215-224
Keywords [en]
Biocomposite, Hybrid, Mechanical properties, Microfibrillated cellulose, Nanocellulose
National Category
Composite Science and Engineering
Identifiers
URN: urn:nbn:se:kth:diva-228719DOI: 10.1016/j.compscitech.2018.04.032Scopus ID: 2-s2.0-85046634249OAI: oai:DiVA.org:kth-228719DiVA, id: diva2:1210944
Note
QC 20180530
2018-05-302018-05-302018-05-30Bibliographically approved