Semi-interpenetrating polymer networks based on crosslinked poly(N -isopropyl acrylamide) and methylcellulose prepared by frontal polymerization
| Autor: | Davide Sanna, Giulio Malucelli, Valeria Alzari, Luca Nuvoli, Alberto Mariani, Mariella Rassu, Daniele Nuvoli |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Polymers and Plastics
differential scanning calorimetry (DSC) polysaccharides 02 engineering and technology mechanical properties 010402 general chemistry 01 natural sciences hydrogels interpenetrating networks (IPN) chemistry.chemical_compound Polymer chemistry Materials Chemistry chemistry.chemical_classification Dimethyl sulfoxide Organic Chemistry technology industry and agriculture Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences Solvent chemistry Polymerization Acrylamide Self-healing hydrogels Radical initiator 0210 nano-technology Glass transition |
| Zdroj: | Journal of Polymer Science Part A: Polymer Chemistry. 56:437-443 |
| ISSN: | 0887-624X |
| DOI: | 10.1002/pola.28914 |
| Popis: | In this work, semi-interpenetrating gels of poly(N-isopropyl acrylamide) and methylcellulose were successfully synthesized by using the Frontal Polymerization (FP) technique. The gels were obtained in the presence of dimethyl sulfoxide and trihexyltetradecylphosphonium persulfate, as polymerization solvent and radical initiator, respectively, hence avoiding the formation of bubbles during polymerization. Then, some of the gels containing dimethyl sulfoxide were thoroughly washed with water, hence obtaining the corresponding hydrogels. The effects of the ratio between poly(N-isopropyl acrylamide) and methylcellulose, the amount of crosslinker and solvent medium (i.e. dimethyl sulfoxide and water) were thoroughly studied, assessing the influence of temperature and velocity of FP fronts on the glass transition temperature values (dried samples), on the swelling behavior and on the dynamic-mechanical properties (gels swollen both in water and dimethyl sulfoxide). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text