Farshchi, A, Hassanpour, A orcid.org/0000-0002-7756-1506, Tantawy, H et al. (1 more author) (2022) Effect of matrix composition on the flowability of spray-dried detergent powders. Advanced Powder Technology, 33 (3). 103433. ISSN 0921-8831
Abstract
The flowability of spray-dried laundry detergent is important for manufacturing process performance and reliability, and product quality; it is strongly dependent on formulation. In this work, a detailed study of four model formulations provides fundamental understanding of the role of particle composition, and micro-structure, on spray-dried detergent powder flow behaviour. All spray-dried powders studied contained the sodium salt of linear alkylbenzene sulphonate (NaLAS) and sodium sulphate. However, their formulation varied depending on either the initial water content (30.0 or 63.0 wt%) of the slurry or the addition of sodium silicate with molar-ratios of 1.6 and 2.35 SiO2:Na2O. The nil-silicate powder, made from low water content slurry, had the poorest flow characteristics. The addition of the silicate binder, significantly improved flowability, 2.35 ratio silicate, providing better flowability than 1.6 ratio. Remarkably, increasing the water content of the slurry also improved flowability significantly. Detail analysis showed that this was due to changes in composition and micro-structure of the composite matrix formed on drying the liquid components of the slurry, and that the improved flowability was due to improvements in mechanical strength of this matrix. These changes in mechanical robustness were significantly more important to the flowability than the powder shape.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 The Society of Powder Technology Japan. Published by Elsevier BV and The Society of Powder Technology Japan. All rights reserved. This is an author produced version of an article published in Advanced Powder Technology. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Detergent powder; Surface composition; Spray drying; Raman microscopy |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Funding Information: | Funder Grant number Innovate UK fka Technology Strategy Board (TSB) 31587-233189 |
Depositing User: | Symplectic Publications |
Date Deposited: | 17 Feb 2022 15:55 |
Last Modified: | 08 Feb 2023 01:13 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.apt.2022.103433 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:183642 |
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