Crystallization of Sodium Dodecyl Sulfate-Water Micellar Solutions under Linear Cooling
File(s)
Accepted version
Author(s)
Miller, RM
Ces, O
Brooks, NJ
Robles, ESJ
Cabral, JT
Type
Journal Article
Abstract
The crystallization kinetics of sodium dodecyl sulfate (SDS)-water micellar solutions, under linear cooling conditions, were experimentally investigated using optical microscopy, differential scanning calorimetry, and infrared spectroscopy. Cooling rates were systematically varied, from 0.1 to 50 °C min–1, encompassing environmental to near-“isothermal” temperature changes, between 22 and −5 °C, for a reference concentration of 20% SDS-H2O. The cooling rate was shown to determine the dominant crystal morphologies, with platelets and needles predominating at the lowest and highest rates, respectively. The results were rationalized in terms of isothermal crystallization data and the time–temperature cooling profile. Rates 0.1, 5.0, and 10 °C min–1 yield morphologies and kinetics analogous to those of isothermal quenches at the corresponding crystallization temperature window. Nontrivial deviations were observed for intermediate rates (0.5, 1.0 °C min–1), due to commensurate changes in temperature and crystallization mechanism, accompanied by solute depletion. The polythermal metastable zone width was estimated, and the non-isothermal nucleation described by the Nývlt equation, while the Avrami and Kissinger models described overall crystallization kinetics. Our measurements quantify the impact of temperature gradients in the crystallization of ubiquitous SDS micellar solutions, for a range of practically relevant profiles incurred during manufacturing and storage.
Date Issued
2017-03-24
Date Acceptance
2017-03-23
Citation
CRYSTAL GROWTH & DESIGN, 2017, 17 (5), pp.2428-2437
ISSN
1528-7483
Publisher
American Chemical Society
Start Page
2428
End Page
2437
Journal / Book Title
CRYSTAL GROWTH & DESIGN
Volume
17
Issue
5
Copyright Statement
© 2017 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Crystal Growth and Design, after peer review and technical editing by the publisher. To access the final edited and published work see: https://dx.doi.org/10.1021/acs.cgd.6b01841
Sponsor
Procter & Gamble Technical Centres Ltd
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000400802500016&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
G4P-4502554341 'Robles'
Subjects
Science & Technology
Physical Sciences
Technology
Chemistry, Multidisciplinary
Crystallography
Materials Science, Multidisciplinary
Chemistry
Materials Science
METASTABLE ZONE WIDTHS
NONISOTHERMAL CRYSTALLIZATION
CRYSTAL MORPHOLOGY
AQUEOUS-SOLUTION
12-HYDROXYSTEARIC ACID
NUCLEATION KINETICS
PHASE-DIAGRAM
BEHAVIOR
PARAMETERS
POTASSIUM
Inorganic & Nuclear Chemistry
0306 Physical Chemistry (Incl. Structural)
0912 Materials Engineering
0302 Inorganic Chemistry
Publication Status
Published