Statistical copolymerization of N-vinyl-pyrrolidone and alkyl methacrylates via RAFT: reactivity ratios and thermal analysis
| العنوان: | Statistical copolymerization of N-vinyl-pyrrolidone and alkyl methacrylates via RAFT: reactivity ratios and thermal analysis |
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| المؤلفون: | Eleftheria Mitsoni, Marinos Pitsikalis, Nikoletta Roka |
| المصدر: | Journal of Polymer Research. 26 |
| بيانات النشر: | Springer Science and Business Media LLC, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | chemistry.chemical_classification, Thermogravimetric analysis, Materials science, Polymers and Plastics, Organic Chemistry, Chain transfer, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, Methacrylate, 01 natural sciences, 0104 chemical sciences, chemistry, Polymerization, Polymer chemistry, Materials Chemistry, Copolymer, Reactivity (chemistry), 0210 nano-technology, Thermal analysis, Alkyl |
| الوصف: | The synthesis of statistical copolymers of N-vinylpyrrolidone (NVP) with the alkyl methacrylates: hexyl methacrylate (HMA) and stearyl methacrylate (SMA), is conducted by reversible addition-fragmentation chain transfer polymerization (RAFT), employing [(O-ethylxanthyl) methyl]benzene and [1-(O-ethylxanthyl) ethyl]benzene as the RAFT agents. The reactivity ratios are estimated using the Fineman-Ross, inverted Fineman-Ross, Kelen-Tudos and Barson-Fenn graphical methods as well as the computer program COPOINT, modified to both the terminal and the penultimate model. In all cases, the NVP reactivity ratio is significantly lower than that of the methacrylates. Structural parameters of the copolymers are obtained by calculating the dyad and triad sequence fractions and the mean sequence length. The thermal properties of the copolymers are studied by Differential Scanning Calorimetry and Thermogravimetric Analysis, and the results are compared with those of the respective homopolymers. In spite of the relatively small amount of NVP in the copolymers, copolymer thermal properties are influenced by both monomers. |
| تدمد: | 1572-8935 1022-9760 |
| DOI: | 10.1007/s10965-019-1776-7 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::f3d688b161fb881f03f5b68ff26b1944 https://doi.org/10.1007/s10965-019-1776-7 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........f3d688b161fb881f03f5b68ff26b1944 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15728935 10229760 |
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| DOI: | 10.1007/s10965-019-1776-7 |