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Process scale up and characterization of wood cellulose nanocrystals hydrolysed using bioethanol pilot plant
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-8909-3554
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-4762-2854
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
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2014 (English)In: Industrial crops and products (Print), ISSN 0926-6690, E-ISSN 1872-633X, Vol. 58, p. 212-219Article in journal (Refereed) Published
Abstract [en]

The paper discusses the isolation of cellulose nanocrystals (CNCBE) from wood resources by integrating the processing with pilot-scale bioethanol processing unit. The nanocrystals were isolated from cellulose obtained by acid pretreatment of wood chips in a bioethanol pilot-scale facility, followed by a series of chemical processes and subsequent homogenization using a lab-scale homogenizer. The isolated nanocrystals had diameters of 5-15 nm, cellulose I crystalline structure and formed a thick semi-transparent gel at low concentration (2 wt%). XPS data showed that these nanocrystals had predominantly O=C-O surface groups which also contributed to its high negative zeta potential. Casted CNCBE films showed excellent mechanical performance (200 MPa of strength, 16 GPa of modulus) and transparency and were also found to be cytocompatible. The developed process route resulted in high-quality nanocellulose crystals with a yield of 600 g/day.

Place, publisher, year, edition, pages
2014. Vol. 58, p. 212-219
National Category
Bio Materials
Research subject
Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-7508DOI: 10.1016/j.indcrop.2014.04.035ISI: 000337984700027Scopus ID: 2-s2.0-84899899619Local ID: 5e73d483-f5c5-4e72-a778-a3130204583fOAI: oai:DiVA.org:ltu-7508DiVA, id: diva2:980398
Note

Validerad; 2014; 20140413 (ajimat)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Mathew, Aji P.Oksman, KristiinaKarim, ZohebLiu, PengKhan, Saad AhmadNaseri, Narges

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