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Temperature stability of nanocellulose dispersions
RISE - Research Institutes of Sweden, Bioeconomy, PFI.ORCID iD: 0000-0001-8876-8898
RISE - Research Institutes of Sweden, Bioeconomy, PFI.ORCID iD: 0000-0002-6183-2017
RISE - Research Institutes of Sweden, Bioeconomy, PFI. Norwegian University of Science and Technology (NTNU), Norway.ORCID iD: 0000-0003-2271-3637
2017 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 157, p. 114-121Article in journal (Refereed) Published
Abstract [en]

Cellulose nanofibrils (CNF) have potential as rheology modifiers of water based fluids, e.g. drilling fluids for use in oil wells or as additives in injection water for enhanced oil recovery (EOR). The temperature in oil wells can be high (>100 °C), and the retention time long; days for drilling fluids and months for EOR fluids. Hence, it is important to assess the temperature stability over time of nanocellulose dispersions to clarify their suitability as rheology modifiers of water based fluids at such harsh conditions. Dispersions of CNF produced mechanically, by using TEMPO mediated oxidation and by using carboxymethylation as pretreatment, in addition to cellulose nanocrystals (CNC), have been subjected to heat aging. Temperature stability was best for CNC and for mechanically produced CNF that were stable after heating to 140 °C for three days. The effect of additives was evaluated; cesium formate and sodium formate increased the temperature stability of the dispersions, while there was no effect of using phosphate buffer.

Place, publisher, year, edition, pages
2017. Vol. 157, p. 114-121
Keywords [en]
Cellulose nanocrystals, Cellulose nanofibrils, Drilling fluids, Enhanced oil recovery, Rheology, Temperature stability, Cellulose, Cellulose derivatives, Dispersions, Elasticity, Enhanced recovery, Injection (oil wells), Molecular biology, Nanocrystals, Nanofibers, Oil well drilling, Oil well flooding, Oil wells, Stability, Suspensions (fluids), Water injection, Well drilling, Cellulose nano-crystals, Cellulose nanocrystal (CNC), Rheology modifiers, TEMPO-mediated oxidation, Water-based fluids, Carboxymethylation, Pretreatment
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Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-33154DOI: 10.1016/j.carbpol.2016.09.077Scopus ID: 2-s2.0-84988953906OAI: oai:DiVA.org:ri-33154DiVA, id: diva2:1178918
Note

Funding details: Cabot Corporation; Funding details: 244615/E30; Funding details: 217212; Funding details: Statoil

Available from: 2018-01-31 Created: 2018-01-31 Last updated: 2018-08-14Bibliographically approved

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Heggset, Ellinor BChinga-Carrasco, GarySyverud, Kristin

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