Syntheses of new polymers by destructive methods—I. Mechanochemical polycondensation and polycondensation by 8Co γ-rays irradiation of poly(ethyleneterephthalate) with ethylenediamine
| Autor: | Claudia Neguleanu, Cleopatra Vasiliu-Oprea, Cristofor Simionescu |
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| Rok vydání: | 1974 |
| Předmět: |
Inert
chemistry.chemical_classification Chemical resistance Condensation polymer Materials science Polymers and Plastics Organic Chemistry General Physics and Astronomy Ethylenediamine Polymer chemistry.chemical_compound chemistry Reagent Polymer chemistry Materials Chemistry Thermal stability Irradiation |
| Zdroj: | European Polymer Journal. 10:61-70 |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/0014-3057(74)90052-4 |
| Popis: | Destruction of heterochain polymers, such as poly(ethyleneterephthalate), achieved under the action of mechanical energy or of γ-rays, is accompanied by the accumulation of an increasing number of functional end-groups, which are able to react with suitable difunctional reagents. Thus, processes are greatly influenced by conditions, e.g. processing time, ratio of reactants, temperature and atmosphere (inert, oxgen, etc.), in which the reaction occurs. The polycondensation products so obtained exhibit properties different from those of the original polymer, viz. increased thermal stability, permanent magnetic moment and chemical resistance. |
| Databáze: | OpenAIRE |
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