Effect of matrix composition on the flowability of spray-dried detergent powders

Amin Farshchi; Ali Hassanpour; Hossam Tantawy; Andrew Bayly

doi:10.1016/j.apt.2022.103433

Effect of matrix composition on the flowability of spray-dried detergent powders

Amin Farshchi, Ali Hassanpour, Hossam Tantawy, Andrew Bayly

SHLS Life Sciences

Research output: Contribution to journal › Article › peer-review

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 SiO ₂:Na ₂O. 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.

Original language	English
Article number	103433
Journal	Advanced Powder Technology
Volume	33
Issue number	3
DOIs	https://doi.org/10.1016/j.apt.2022.103433
Publication status	Published - 1 Mar 2022

Bibliographical note

Funding Information:
The authors would like to thank the Advanced Manufacturing Supply Chain Initiative (AMSCI) [grant number 31587, 233189] for funding the project. AMSCI is a government supply chain fund which is helping to rebuild British manufacturing processes. We also acknowledge the input of Joel Caragay and Paul Gould of Procter and Gamble for production of materials and their support throughout the project.

Publisher Copyright:
© 2022 The Society of Powder Technology Japan

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10.1016/j.apt.2022.103433

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title = "Effect of matrix composition on the flowability of spray-dried detergent powders",

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 SiO 2:Na 2O. 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. ",

author = "Amin Farshchi and Ali Hassanpour and Hossam Tantawy and Andrew Bayly",

note = "Funding Information: The authors would like to thank the Advanced Manufacturing Supply Chain Initiative (AMSCI) [grant number 31587, 233189] for funding the project. AMSCI is a government supply chain fund which is helping to rebuild British manufacturing processes. We also acknowledge the input of Joel Caragay and Paul Gould of Procter and Gamble for production of materials and their support throughout the project. Publisher Copyright: {\textcopyright} 2022 The Society of Powder Technology Japan",

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AU - Farshchi, Amin

AU - Hassanpour, Ali

AU - Tantawy, Hossam

AU - Bayly, Andrew

N1 - Funding Information: The authors would like to thank the Advanced Manufacturing Supply Chain Initiative (AMSCI) [grant number 31587, 233189] for funding the project. AMSCI is a government supply chain fund which is helping to rebuild British manufacturing processes. We also acknowledge the input of Joel Caragay and Paul Gould of Procter and Gamble for production of materials and their support throughout the project. Publisher Copyright: © 2022 The Society of Powder Technology Japan

PY - 2022/3/1

Y1 - 2022/3/1

N2 - 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 SiO 2:Na 2O. 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.

AB - 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 SiO 2:Na 2O. 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.

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DO - 10.1016/j.apt.2022.103433

M3 - Article

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VL - 33

JO - Advanced Powder Technology

JF - Advanced Powder Technology

IS - 3

M1 - 103433

ER -

Effect of matrix composition on the flowability of spray-dried detergent powders

Abstract

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