The characterization of recycled PMMA
| Autor: | Marioara Moldovan, Cristina Prejmerean, George Liviu Popescu, Violeta Popescu, Mihai Brebu, Corneliu Trişcă-Rusu, Ileana Cojocaru, Cornelia Vasile, Lucica Stănuleţ |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
chemistry.chemical_classification
Materials science Depolymerization Mechanical Engineering Radical polymerization Metals and Alloys Polymer chemistry.chemical_compound Monomer Flexural strength chemistry Polymerization Mechanics of Materials Vickers hardness test Materials Chemistry Methyl methacrylate Composite material |
| Zdroj: | Journal of Alloys and Compounds. 483:432-436 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2008.08.148 |
| Popis: | The paper presents a study related to the possibility of obtaining polymers through the polymerization of liquid products, consisting mainly on methyl methacrylate (MMA), resulted from thermal degradation of poly(methyl methacrylate) (PMMA), at 450 °C in a laboratory scale installation. PMMA was obtained from MMA chemically recycled without any purification. The PMMA obtained from monomers resulted by thermal degradation of virgin PMMA is clear transparent; while PMMA polymerized from the liquid obtained by depolymerization of 20 years old PMMA (PMMA waste) is opaque due to the presence of impurities, which influence both the polymerization process and the properties of the obtained PMMA. The compressive and flexural strength and Vickers hardness have been determined and closed values have been found for polymers obtained from MMA resulted through depolymerization of virgin PMMA and that from PMMA waste. |
| Databáze: | OpenAIRE |
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