Hydrogels based on schiff base formation between an amino-containing polyphosphazene and aldehyde functionalized-dextrans
| Autor: | Jessica L. Nichol, Nicole L. Morozowich, Harry R. Allcock |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Schiff base Polymers and Plastics Organic Chemistry technology industry and agriculture macromolecular substances 02 engineering and technology Polymer Carbon-13 NMR 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Aldehyde 0104 chemical sciences chemistry.chemical_compound chemistry Self-healing hydrogels Polymer chemistry Materials Chemistry Proton NMR Organic chemistry Polyphosphazene 0210 nano-technology Macromolecule |
| Zdroj: | Journal of Polymer Science Part A: Polymer Chemistry. 54:2984-2991 |
| ISSN: | 0887-624X |
| DOI: | 10.1002/pola.28184 |
| Popis: | Hydrogels generated by the interaction of two different water-soluble polymers offer access to a new group of soft materials. A prototype amino-functionalized polyphosphazene with both tyramine and ferulic acid-based side groups was coupled to aldehyde functionalized-dextrans to form hydrogels crosslinked via Schiff base chemistry. Synthesis of the polyphosphazene was accomplished by macromolecular substitution and protection-deprotection chemistry, with characterization by 1H NMR, 31P NMR, solid state 13C NMR, and DSC techniques. Combination of the aqueous polyphosphazene and aldehyde functionalized-dextran solutions at room temperature caused gelation with different gelation times and crosslink densities dependent on the aldehyde content of the dextran. The hydrogel properties were evaluated using rheology, thermal characterization, and cryo-microscopy. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016 |
| Databáze: | OpenAIRE |
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