Crystallisation of sodium dodecyl sulphate from aqueous solution: phase identification, crystal morphology, surface chemistry and kinetic interface roughening

Smith, Lorna; Duncan, Andrew J.; Thomson, Gillian Barnes; Roberts, Kevin J.; Machin, D.; McLeod, G.

doi:10.1016/j.jcrysgro.2003.11.025

Cited by 55 publications

(62 citation statements)

References 20 publications

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“…12 In addition, several non-equilibrium forms have been observed, specifically the ⅛, mono-and hemihydrates, depending on the cooling rate and temperature. 45,46 23…”

Section: Morphology and Other Analysismentioning

confidence: 99%

“…40 The ⅛ hydrate has a monoclinic C2/c structure; 37 46,48 Although the crystallization of SDS from solution has been examined for several decades, 12,13,[37][38][39][40][41][42][43][44][45][46][47][48] an unequivocal correspondence between crystallization kinetics, morphology and polymorphs under isothermal conditions is lacking. This paper seeks to understand and quantify the rates of nucleation, overall crystallization kinetics and morphologies of SDS-H 2 O micellar solutions (rapidly) quenched and held isothermally below the crystallization phase boundary.…”

Section: Introductionmentioning

confidence: 99%

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Isothermal Crystallization Kinetics of Sodium Dodecyl Sulfate–Water Micellar Solutions

Miller¹,

Poulos²,

Robles

et al. 2016

Crystal Growth & Design

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KingdomThe crystallization mechanisms and kinetics of micellar sodium dodecyl sulfate (SDS) solutions in water, under isothermal conditions, were investigated experimentally by a combination of reflection optical microscopy (OM), differential scanning calorimetry (DSC) and attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR). The rates of nucleation and growth were estimated from OM and DSC across temperatures ranging from 20 to -6 °C for 20% SDS-H 2 O, as well as for 10 and 30% SDS-H 2 O at representative temperatures of 6, 2 and -2 °C. A decrease in temperature increased both nucleation and growth rates, and the combined effect of the two processes on the morphology was quantified via both OM and ATR-FTIR. Needles, corresponding to the hemihydrate polymorph, become the dominant crystal form at ≤-2 °C, while platelets, the monohydrate, predominate at higher temperatures. Above 8 °C, crystallization was only observed if seeded from crystals generated at lower temperatures. Our results provide quantitative and morphological insight into the crystallization of ubiquitous micellar SDS solutions and its phase stability below room temperature. ABSTRACT:The crystallization mechanisms and kinetics of micellar sodium dodecyl sulfate (SDS) solutions in water, under isothermal conditions, were investigated experimentally by a combination of reflection optical microscopy (OM), differential scanning calorimetry (DSC) and attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR). The rates of nucleation and growth were estimated from OM and DSC across temperatures ranging from 20 to -6 °C for 20% SDS-H 2 O, as well as for 10 and 30% SDS-H 2 O at representative temperatures of 6, 2 and -2 °C. A decrease in temperature increased both nucleation and growth rates, and the combined effect of the two processes on the morphology was quantified via both OM and ATR-FTIR. Needles, corresponding to the hemihydrate polymorph, become the dominant crystal form at ≤-2 °C, while platelets, the monohydrate, predominate at higher temperatures. Above 8 °C, crystallization was only observed if seeded from crystals generated at lower temperatures. Our results 3 provide quantitative and morphological insight into the crystallization of ubiquitous micellar SDS solutions and its phase stability below room temperature.

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“…12 In addition, several non-equilibrium forms have been observed, specifically the ⅛, mono-and hemihydrates, depending on the cooling rate and temperature. 45,46 23…”

Section: Morphology and Other Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Isothermal Crystallization Kinetics of Sodium Dodecyl Sulfate–Water Micellar Solutions

Miller¹,

Poulos²,

Robles

et al. 2016

Crystal Growth & Design

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“…With the increase of M crystals begin to grow. In accordance with Wolf principle chain-like structure of SDS molecule predetermines that crystals are formed either as thin elongated plates for SDS anhydrite or monohydrite, or as octahedral-like plates for C 12 H 25 OSO 3 Na·1/8H 2 O [35]. After aging of colloid for dozens hours the images show crystals in the shape of long sticks (Fig.…”

Section: Morphology Of Synthesized Productsmentioning

confidence: 56%

Structural, Morphological and Optical Properties of Nanoproducts of Zirconium Target Laser Ablation in Water and Aqueous SDS Solutions

Karpukhin¹,

Malikov²,

Бородина³

et al. 2017

ChChT

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Abstract.1 Structural, morphological and optical properties of nanoproducts of laser ablation of zirconium target in water and aqueous SDS solutions were investigated. Depending on experiment conditions the indicated products can appear as different crystalline phases of zirconia and organic-inorganic composites, which include SDS alkyl chains intercalated between layers of zirconium oxides or hydroxides. The formation of zirconium dioxide-based hollow nano and microstructures is demonstrated. It is suggested that ablation formed gas-vapor bubbles can serve as templets for generation of hollow structures.

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“…A S-shaped rate profile is typical for such systems [12]. [13,14]. Their work also considered the morphology of the SDS crystals.…”

Section: Introductionmentioning

confidence: 99%

Crystallisation of sodium dodecyl sulfate and the corresponding effect of 1-dodecanol addition

Summerton

Zimbitas

Britton

et al. 2016

Journal of Crystal Growth

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This version is available at https://strathprints.strath.ac.uk/62777/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. AbstractSodium dodecyl sulfate (SDS) exhibits crystallisation upon exposure to low temperatures, which can pose a problem in terms of product stability. In this study, non-isothermal crystallisation of SDS is investigated via differential scanning calorimetry (DSC) at concentrations that are typical of those present in many industrial liquid detergents. At different low temperatures, the crystal structures are analysed with X-ray diffraction (XRD) and it is concluded that ice formation during the surfactant crystallisation process occurs below 0 °C.The capability of the alcohol precursor, 1-dodecanol, as a seeding material for SDS crystallisation is also investigated through the use of DSC and optical microscopy. These results show that 1-dodecanol can successfully act as a seed for SDS crystallisation. Upon cooling an SDS aqueous system, the crystallisation peak in the DSC thermogram shifts to a higher temperature in the presence of 1-dodecanol. Therefore, any remnant alcohol precursor in surfactant-based formulations could have a negative impact on the product stability upon exposure to cold climates.

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Crystallisation of sodium dodecyl sulphate from aqueous solution: phase identification, crystal morphology, surface chemistry and kinetic interface roughening

Cited by 55 publications

References 20 publications

Isothermal Crystallization Kinetics of Sodium Dodecyl Sulfate–Water Micellar Solutions

Isothermal Crystallization Kinetics of Sodium Dodecyl Sulfate–Water Micellar Solutions

Structural, Morphological and Optical Properties of Nanoproducts of Zirconium Target Laser Ablation in Water and Aqueous SDS Solutions

Crystallisation of sodium dodecyl sulfate and the corresponding effect of 1-dodecanol addition

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