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Gels 2016, 2(1), 3; doi:10.3390/gels2010003

Synthesis and Characterization of New Functional Photo Cross-Linkable Smart Polymers Containing Vanillin Derivatives

1
Chemistry Department, University of Paderborn, Warburger Straße 100, D-33098 Paderborn, Germany
2
Polymer Lap, Chemistry Department, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
*
Author to whom correspondence should be addressed.
Academic Editor: David Díaz Díaz
Received: 2 October 2015 / Revised: 2 December 2015 / Accepted: 18 December 2015 / Published: 14 January 2016
(This article belongs to the Special Issue Stimuli-Responsive Gels)
View Full-Text   |   Download PDF [2424 KB, uploaded 14 January 2016]   |  

Abstract

The synthesis of new functional monomers based on vanillin is reported. The monomers further were used in the synthesis of different temperature-responsive photo cross-linkable polymers via free radical polymerization with N-isopropyl acrylamide and a maleimide photo cross-linker. These polymers were characterized by NMR, FTIR and UV spectroscopy, as well as gel permeation chromatography (GPC) and differential scanning calorimetry (DSC). Critical solution temperatures were determined by UV spectroscopy. Hydrogel thin films were formed by spin coating of a polymer solution over gold with adhesion promotor followed by cross-linking by UV irradiation. The swelling properties were determined by surface plasmon resonance coupled with optical waveguide spectroscopy. The swelling behavior of the hydrogel films was determined as a function of temperature. The incorporation of a dialkyl amino group compensated the hydrophobic effect of the vanillin monomer. Transition temperatures in the physiological range could be obtained. View Full-Text
Keywords: vanillin; N-isopropyl acrylamide; photo cross-linking; hydrogel films; temperature responsive; swelling; lower critical solution temperature; surface plasmon resonance vanillin; N-isopropyl acrylamide; photo cross-linking; hydrogel films; temperature responsive; swelling; lower critical solution temperature; surface plasmon resonance
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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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Abdelaty, M.S.; Kuckling, D. Synthesis and Characterization of New Functional Photo Cross-Linkable Smart Polymers Containing Vanillin Derivatives. Gels 2016, 2, 3.

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