Study on acrylamide-vinyl pyrrolidone copolymer
| Autor: | S. M. Mokhtar, A. Z. Dakroury, Massarat B. S. Osman |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
chemistry.chemical_classification
Aqueous solution Polymers and Plastics Azobisisobutyronitrile General Chemistry Polymer Condensed Matter Physics Thermal diffusivity chemistry.chemical_compound Monomer chemistry Chemical engineering Acrylamide Polymer chemistry Materials Chemistry Copolymer Reactivity (chemistry) |
| Zdroj: | Polymer Bulletin. 28:181-188 |
| ISSN: | 1436-2449 0170-0839 |
| DOI: | 10.1007/bf00299654 |
| Popis: | The solution copolymerization of acrylamide (AAm) with N-vinyl pyrrolidone (NVP) was investigated using azobisisobutyronitrile (AIBN) as an initiator at 60°C. The study was performed by measuring the rate of the copolymerization reaction, the molecular weights and by determining the monomer reactivity ratios. In addition, the thermal properties (thermal conductivity, thermal diffusivity and volumetric heat capacity) of the resulted copolymers in aqueous solutions were investigated at various temperatures. The kinetic results and the apparent reactivity ratios indicate that NVP is more reactive than AAm towards the copolymerization process. The values of the thermal properties whowed that the behaviour of such parameters depend on the polymer concentration, the temperatures and the content of vinyl pyrrolidone in the copolymeric chains. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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