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

Emily Summerton, Georgina Zimbitas, Melanie Britton, Serafim Bakalis

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Sodium 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.

LanguageEnglish
Pages111-116
Number of pages6
JournalJournal of Crystal Growth
Volume455
Early online date4 Oct 2016
DOIs
Publication statusPublished - 1 Dec 2016

Fingerprint

Dodecanol
Sodium dodecyl sulfate
Crystallization
sodium sulfates
Sodium Dodecyl Sulfate
crystallization
Differential scanning calorimetry
heat measurement
Surface-Active Agents
scanning
alcohols
Alcohols
Surface active agents
surfactants
ice formation
thermograms
detergents
Detergents
Ice
products

Keywords

  • differential scanning calorimetry
  • nucleation
  • optical microscopy
  • industrial crystallisation
  • 1-dodecanol
  • sodium dodecyl sulfate

Cite this

Summerton, Emily ; Zimbitas, Georgina ; Britton, Melanie ; Bakalis, Serafim. / Crystallisation of sodium dodecyl sulfate and the corresponding effect of 1-dodecanol addition. In: Journal of Crystal Growth. 2016 ; Vol. 455. pp. 111-116.
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abstract = "Sodium 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 sulfate and the corresponding effect of 1-dodecanol addition. / Summerton, Emily; Zimbitas, Georgina; Britton, Melanie; Bakalis, Serafim.

In: Journal of Crystal Growth, Vol. 455, 01.12.2016, p. 111-116.

Research output: Contribution to journalArticle

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