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Light scattering in cellulose nanofibre suspensions: Model and experiments
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0002-2388-3358
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0002-6247-5963
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0002-4254-5020
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2016 (English)In: Computers in Chemistry Proceeding from ACS National Meeting San Diego: Proceeding from ACS National Meeting San Diego, American Chemical Society (ACS), 2016, p. 122-, article id CELL 235Conference paper, Meeting abstract (Other academic)
Abstract [en]

Here light scattering theory is used to assess the size distribution in a suspension of cellulose as it is fibrillated from micro-scaled to nano-scaled fibres. A model based on Monte carlo simulations of the scattering of photons by different sizes of cellulose fibres was used to predict the UV-IF spectrum of the suspensions. Bleached cellulose hardwood pulp was tested and compared to the visually transparent tempo-oxidised hardwood cellulose nanofibres (CNF) suspension. The theoretical results show that different diameter size classes exhibit very different scattering patterns. These classes could be identified in the experimental results and used to establish the size class dominating the suspension. A comparison to AFM/microscope size distribution was made and the results indicated that using the UV-IF light scattering spectrum maybe more reliable that size distribution measurement using AFM and microscopy on dried CNF samples. The UV-IF spectrum measurement combined with the theoretical prediction can be used even at this initial stage of development of this model to assess the degree of fibrillation when processing CNF.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2016. p. 122-, article id CELL 235
National Category
Bio Materials Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Wood and Bionanocomposites; Industrial Electronics
Identifiers
URN: urn:nbn:se:ltu:diva-27433Local ID: 0e1f8cb1-032d-4e71-956c-b2aca7925036OAI: oai:DiVA.org:ltu-27433DiVA, id: diva2:1000617
Conference
American Chemical Society (ACS) National Meeting & Exposition : 13/03/2016 - 17/03/2016
Note
Godkänd; 2016; 20160418 (aitomaki)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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http://sandiego2016.acs.org/i/651144-computers-in-chemistry/50

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Aitomäki, YvonneBerglund, LinnNoël, MaximeLinder, TomasLöfqvist, TorbjörnOksman, Kristiina

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