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Gels 2017, 3(2), 12; doi:10.3390/gels3020012

Ultrasound- and Temperature-Induced Gelation of Gluconosemicarbazide Gelator in DMSO and Water Mixtures

Polymers and Functional Materials Division, Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, Telangana 500007, India
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Author to whom correspondence should be addressed.
Academic Editor: Xian Jun Loh
Received: 10 February 2017 / Revised: 31 March 2017 / Accepted: 12 April 2017 / Published: 18 April 2017
(This article belongs to the Special Issue Organogels for Biomedical Applications)
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Abstract

We have developed amphiphilic supramolecular gelators carrying glucose moiety that could gel a mixture of dimethyl sulfoxide (DMSO) and water upon heating as well as ultrasound treatment. When the suspension of gluconosemicarbazide was subjected to ultrasound treatment, gelation took place at much lower concentrations compared to thermal treatment, and the gels transformed into a solution state at higher temperatures compared to temperature-induced gels. The morphology was found to be influenced by the nature of the stimulus and presence of salts such as KCl, NaCl, CaCl2 and surfactant (sodium dodecyl sulphate) at a concentration of 0.05 M. The gel exhibited impressive tolerance to these additives, revealing the stability and strength of the gels. Fourier transform infrared spectroscopy (FTIR) revealed the presence of the intermolecular hydrogen bonding interactions while differential scanning calorimetry (DSC) and rheological studies supported better mechanical strength of ultrasound-induced (UI) gels over thermally-induced (TI) gels. View Full-Text
Keywords: amphiphilic gelators; ultrasound; thermoreversible; hydrogen bonding; gluconohydrazide amphiphilic gelators; ultrasound; thermoreversible; hydrogen bonding; gluconohydrazide
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Himabindu, M.; Palanisamy, A. Ultrasound- and Temperature-Induced Gelation of Gluconosemicarbazide Gelator in DMSO and Water Mixtures. Gels 2017, 3, 12.

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