Poly(vinyl acetal)s from poly(vinyl alcohol) and 4-dimethylaminobenzaldehyde
| Autor: | R. S. Velichkova, V.D. Toncheva, S.D. Ivanova |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Vinyl alcohol
Polymers and Plastics Ion exchange Organic Chemistry Acetal technology industry and agriculture General Physics and Astronomy macromolecular substances chemistry.chemical_compound chemistry Reagent Polymer chemistry Self-healing hydrogels Water uptake Materials Chemistry medicine Organic chemistry Thermal stability Swelling medicine.symptom |
| Zdroj: | European Polymer Journal. 30:741-747 |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/0014-3057(94)90125-2 |
| Popis: | Poly(vinyl acetal)s with different degree of acetalization have been synthesized from poly(vinyl alcohol) and 4-dimethylaminobenzaldehyde. After quaternization and crosslinking they have been converted in ion exchange hydrogels. As quaternizing reagents ethylbromide, benzylchloride and p,p'-dichloroxylene have been used. The last has also proved to be a good crosslinking agent. Swelling, water uptake, ion-exchange capacity, electric conductivity of the films have been measured as a function of the degree of acetalization, quaternization and crosslinking. Thermal stability and mechanical properties have been also investigated. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|