Crystallisation of sodium dodecyl sulfate and the corresponding effect of 1-dodecanol addition
作者： Emily Summerton , Georgina Zimbitas , Melanie Britton , Serafim Bakalis
DOI: 10.1016/J.JCRYSGRO.2016.10.005
关键词: Sodium dodecyl sulfate 、 Nucleation 、 Differential scanning calorimetry 、 Crystallization 、 Aqueous solution 、 Pulmonary surfactant 、 Chromatography 、 Chemistry 、 Optical microscope 、 Chemical engineering 、 Crystal structure
摘要: 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 SDS is investigated via differential scanning calorimetry (DSC) at concentrations that are typical those present many industrial liquid detergents. At different the crystal structures analysed with X-ray diffraction (XRD) and it concluded ice formation during surfactant process occurs below 0 °C. The capability alcohol precursor, 1-dodecanol, as seeding material for also through use DSC optical microscopy. These results show 1-dodecanol successfully act seed crystallisation. Upon cooling an aqueous system, peak thermogram shifts higher temperature presence 1-dodecanol. Therefore, any remnant precursor surfactant-based formulations could have negative impact on stability cold climates.
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