Formulating liquid detergents with naturally derived surfactants—Phase behaviour, crystallisation and rheo-stability of primary alkyl sulphates based on coconut oil

Richards, Claire; Mohammadi, Mansur S.; Tiddy, G. J. T.

doi:10.1016/j.colsurfa.2008.04.051

Cited by 10 publications

(4 citation statements)

References 11 publications

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“…number of coexisting lamellar polymorphs, indicating the silicate ratio has no effect on the self-assembled surfactant structure. The occurrence of coexisting lamellar phases of NaLAS in liquid detergent systems has been previously reported by Richards et al (2009) and Stewart et al (2009), which, according to the authors, was attributed to the natural heterogeneity of the chemical structure of NaLAS. It was suggested that NaLAS isomers possessing a benzene ring substituted in the middle of hydrocarbon chain, i.e.…”

Section: Accepted Manuscriptmentioning

confidence: 65%

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The structure of spray-dried detergent powders

2019

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The complex multi-scale structure of spray-dried detergent granules has been characterized using a range of techniques including microscopy, wide-angle and small-angle X-ray scattering and X-ray microtomography. Four simple model formulations based on linear alkyl benzene sulphonate (NaLAS) and sodium sulphate were used to probe the influence of initial slurry water content and sodium silicate on the structure. The structure can be viewed as a porous matrix consisting of liquid crystalline NaLAS, sodium sulphate and binder in which large crystals of sodium sulphate are embedded. These large crystals were initially undissolved in the slurry and are consequently reduced in number in the product made from higher water content slurry. The both slurry water content and sodium silicate changed the polymorphs, and the d-spacing of the lamellae. The surface micro-structure and particle morphology can also be significantly affected with the high initial water content; particles having a distinct agglomerated and blistered structure.

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Section: Accepted Manuscriptmentioning

confidence: 65%

“…Aqueous NaLAS systems show this typical phase behaviour, though typically no hexagonal phase is observe in the phase diagram e.g. Liaw et al (2003); Richards et al (2009) and Stewart et al (2009). The addition of electrolytes to low concentration aqueous surfactant solutions is known to 'salt out' the surfactant.…”

Section: Accepted Manuscriptmentioning

confidence: 98%

The structure of spray-dried detergent powders

2019

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“…The most effective removal of iron-bearing minerals occurs when the mixing ratio of NaOL: BHA: A CO is 3:1:0.05, and further increases in the proportion of each reagent worsen the removal effect. Coconut oil amine (A CO), a primary amine compound commonly used as an emulsifier, can cause pulp flocculation if overdosed, thereby affecting flotation effectiveness [33]. Additionally, benzohydroxamic acid is expensive, so the optimal ratio of the mixed collector is NaOL: BHA: A CO = 3:1:0.05.…”

Section: Flotation Testmentioning

confidence: 99%

Efficient Recovery of Feldspar, Quartz, and Kaolin from Weathered Granite

Huang,

Li,

Gou

et al. 2024

Minerals

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Weathered granite contains a high concentration of feldspar, quartz, and kaolin. However, while it becomes rich in clay due to strong physical weathering, the granite minerals that are not fully weathered are still very hard, which makes the grinding process more difficult and limits its use. This study proposes a multi-step process involving grinding, desliming, and flotation to address this issue. The study determines the appropriate grinding time and power index for the original ore, as well as the optimal desliming method using a hydrocyclone. To remove iron-containing impurities like mica, a combination of NaOL/BHA/A CO collectors is used for the reverse rough flotation of quartz. Additionally, a combination of DDA/SDS collectors is employed to separate quartz and feldspar through flotation, resulting in a quartz product with a silicon dioxide content of 99.51%. The objective of efficiently recycling feldspar, quartz, and kaolin from weathered granite is accomplished. Additionally, the inclusion of intermediate mineral components as by-products of feldspar and raw materials for aerated bricks is introduced, resulting in the complete utilization of all components. This innovative approach ensures a clean and environmentally friendly process, eliminating the need for solid waste disposal.

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“…Coconut oil based on primary alkyl sulfate (cocoPAS) surfactant is SDS derivatives that has a wide, linear chain length distribution between C8 and C18 where C12 and C14 chains comprise ca. 66 wt.% [14]. Based on this approach, in this study, synthesis of TiO2-MWCNT composites was carried out with cocoPAS surfactant as MWCNT dispersing agent.…”

Section: Introductionmentioning

confidence: 99%

Determination of photocatalytic process parameters on phenol degradation using TiO2-MWCNT (cocoPAS) composite

Heltina¹,

Putri²,

Utama³

et al. 2021

Int. J. Sci. Res. Arch.

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Multi-walled carbon nanotubes (MWCNT) were prepared by treatment of cocoPas and titanium dioxide nanocomposites TiO2 – MWCNT (cocoPAS) prepared by stirring and mixing method was used as a photocatalyst for the degradation of phenol in water under light irradiation. The morphology and microstructure of the composites were characterized with SEM, FT-IR, BET, XRD and UV-visible spectrophotometer. The purpose of this study were synthesize TiO2-MWCNT (cocoPAS) composite and evaluate its performance for photodegradation phenol. It was found that the degree of photodegradation of phenol under UV light was highly dependent on the concentration of phenol and the degradation temperature. The presence of MWCNT worked as the adsorbent and electron acceptor to efficiently enhance the phenol photodegradation. The as-prepared nanotubes, with surfactant contents, showed high- photocatalytic activities with increase degradation. These results indicate that TiO2 – MWCNT (cocoPAS)composites using cocoPAS can be used to enhance degradation and can expand potential applications for the degradation of organic pollutants.

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Formulating liquid detergents with naturally derived surfactants—Phase behaviour, crystallisation and rheo-stability of primary alkyl sulphates based on coconut oil

Cited by 10 publications

References 11 publications

The structure of spray-dried detergent powders

The structure of spray-dried detergent powders

Efficient Recovery of Feldspar, Quartz, and Kaolin from Weathered Granite

Determination of photocatalytic process parameters on phenol degradation using TiO2-MWCNT (cocoPAS) composite

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