Paximada, P orcid.org/0000-0002-8948-1677, Dimitrakopoulou, EA, Tsouko, E et al. (3 more authors) (2016) Structural modification of bacterial cellulose fibrils under ultrasonic irradiation. Carbohydrate Polymers, 150. pp. 5-12. ISSN 0144-8617
Abstract
Ιn the present study we investigated ultrasounds as a pretreatment process for bacterial cellulose (BC) aqueous suspensions. BC suspensions (0.1–1% wt) subjected to an ultrasonic treatment for different time intervals. Untreated BC presented an extensively entangled fibril network. When a sonication time of 1 min was applied BC fibrils appeared less bundled and dropped in width from 110 nm to 60 nm. For a longer treatment (3–5 min) the width of the fibrils increased again to 100 nm attributed to an entanglement of their structure. The water holding capacity (WHC) and ζ-potnential of the suspensions was proportional to the sonication time. Their viscosity and stability were also affected; an increase could be seen at short treatments, while a decrease was obvious at longer ones. Concluding, a long ultrasonic irradiation led to similar BC characteristics as the untreated, but a short treatment may be a pre-handling method for improving BC properties.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 Elsevier Ltd. All rights reserved. This is an author produced version of an article published in Carbohydrate Polymers. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Bacterial; Cellulose; Suspension; Ultrasounds; Fibrils; Rheology |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Food Science and Nutrition (Leeds) > FSN Chemistry and Biochemistry (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 13 Sep 2021 12:17 |
Last Modified: | 13 Sep 2021 12:17 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.carbpol.2016.04.125 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:178084 |
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