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Study of structural morphology of hemp fiber from the micro to the nanoscale
University of Toronto.
University of Toronto.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-4762-2854
2007 (English)In: Applied Composite Materials, ISSN 0929-189X, E-ISSN 1573-4897, Vol. 14, no 2, p. 89-103Article in journal (Refereed) Published
Abstract [en]

The focus of this work has been to study how high pressure fibrillation and chemical purification affect the hemp fiber morphology from micro to nanoscale.Microscopy techniques, chemical analysis and x-ray diffraction were used to study the structure and properties of the prepared micro and nanofibers. Microscopy studies showed that the use ofd individualization processes lead to unique morphology of interconnected web-like structures of hemp fibers. The nanofibers are bundles of cellulose fibers fibersof widths ranging between 30-100 nm and estimated lengths of several micrometers. The chemical analysis showed that selective chemical treatments increased the alfa-cellulose content of hemp nanofibers from 75 to 94%. Fourier transform infrared spectroscopy (FTIR) study showed tha the pectins were partially removed during the individualization treatments. X-ray analysis showed that the relative crystallinity of the studied fibers increased after each stage of chemical and mechanical treatments. It was also observed that the hemp nanofibers had an increased crystallinity of 71 from 57% of untreated hemp fibers.

Place, publisher, year, edition, pages
2007. Vol. 14, no 2, p. 89-103
National Category
Bio Materials
Research subject
Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-6032DOI: 10.1007/s10443-006-9032-9ISI: 000248830200001Scopus ID: 2-s2.0-34347379956Local ID: 43995780-6c3d-11dc-89fb-000ea68e967bOAI: oai:DiVA.org:ltu-6032DiVA, id: diva2:978908
Note
Validerad; 2007; 20070926 (krioks)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Oksman, Kristiina

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