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Cellulose nanowhiskers separated from a bio-residue from wood bioethanol production
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.ORCID-id: 0000-0003-4762-2854
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
2011 (Engelska)Ingår i: Biomass and Bioenergy, ISSN 0961-9534, E-ISSN 1873-2909, Vol. 35, nr 1, s. 146-152Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The aim of this study was to explore the utilization of industrial bio-residues as a source of raw material for the industrial production of cellulose nanowhiskers. The used residue, obtained from a bioethanol pilot plant, was first purified using chemical extraction and bleaching, and then separated to nanowhiskers by mechanical treatments such as ultrasonication, high-pressure homogenization as well as chemical acid hydrolysis.The chemical compositions and characteristics of the bio-residue were studied before and after purification using a TAPPI standard, Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). The morphology of the isolated nanowhiskers was characterized using atomic force microscope (AFM). The chemical composition of the used bio-residue was found to be 49.5 wt% cellulose, 42.1 wt% lignin and 8.4 wt% extractives. The crystallinity of the bio-residue was 14.5% and it increased to more than 73% after the purification process. The nanowhiskers isolated using ultrasonication or high-pressure homogenization had better thermal stability than nanowhiskers isolated with acid hydrolysis. The AFM study showed that a simple ultrasonication and homogenization processes resulted in nanosize whiskers with diameters in the 10-20 nm range.

Ort, förlag, år, upplaga, sidor
2011. Vol. 35, nr 1, s. 146-152
Nationell ämneskategori
Biomaterial
Forskningsämne
Trä och bionanokompositer
Identifikatorer
URN: urn:nbn:se:ltu:diva-14127DOI: 10.1016/j.biombioe.2010.08.021ISI: 000286905300016Scopus ID: 2-s2.0-78650527850Lokalt ID: d769ede0-a465-11df-a707-000ea68e967bOAI: oai:DiVA.org:ltu-14127DiVA, id: diva2:987081
Anmärkning
Validerad; 2011; 20100810 (krioks)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2018-07-10Bibliografiskt granskad

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Oksman, KristiinaJackson-Etang, AyukMathew, Aji P.Jonoobi, Mehdi

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