Microwave Assisted Synthesis of Thiol Modified Polymethacrylic acid and Its Cross-Linking with Allyl Modified Polymethacrylic acid via Thiol-ene “Click” Reaction
✍ Scribed by Mareike Bardts; Helmut Ritter
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 265 KB
- Volume
- 211
- Category
- Article
- ISSN
- 1022-1352
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✦ Synopsis
Abstract
In this paper, we describe the thiol‐ene “click” reaction with modified poly methacrylic acid in water. The thiol group was implemented by a polymer analogous condensation reaction of polymethacrylic acid (1) and cysteamine (2), which was carried out in bulk by use of microwave. The allyl modified polymethacrylic acid (5) was obtained by DCC‐coupling of the allyl amine onto the polymethacrylic acid backbone. By combination of cysteamine (3) and allyl modified polymethacrylic acid (5) the thiol‐ene click reaction could be started with a redox initiator in aqueous solution at room temperature. The kinetics of this reaction were determined by ^1^H NMR spectroscopy and the resulting hydrogels were analyzed by rheological measurements and differential scanning calorimetry (DSC).
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