Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 410, Issue -, Pages 18-22Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2012.06.008
Keywords
Acetates; beta-Cyclodextrin; Transformation; Reversible organogel; Stable gel
Categories
Funding
- NSFC [20625307]
- National Basic Research Program of China (973 Program) [2009CB930103]
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This paper describes the first example of controllable transformation from sensitive and reversible heat-set organogel to stable gel induced by sodium acetate. Upon the addition of proper amount of acetate sodium into the reversible heat-set organogel system composed of beta-CD, phenolphthalein (PP) and lithium chloride in N,N-dimethylformamide, the reversible gel could transform to stable gel as the temperature decreased. Further studies showed that other analogous acetates with K+ and Mg2+ do not possess this property. The gel was characterized by SEM, XRD and FT-IR. This work may pave the way for the design of smart materials with multi-responsiveness. (C) 2012 Elsevier B.V. All rights reserved.
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