Low-density polyethylene modified by thermal polymerization of 4-vinylpyridine and methyl methacrylate: Structural studies
| Autor: | Glaucione Gomes De Barros, Ana Regina Feitosa de Britto, Maria J. A. Sales |
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| Rok vydání: | 1996 |
| Předmět: |
Materials science
Polymers and Plastics Scanning electron microscope technology industry and agriculture macromolecular substances General Chemistry Polyethylene Amorphous solid chemistry.chemical_compound Low-density polyethylene Monomer chemistry Chemical engineering Polymerization Polymer chemistry Materials Chemistry Coordination polymerization Methyl methacrylate |
| Zdroj: | Polymer Engineering & Science. 36:1125-1128 |
| ISSN: | 1548-2634 0032-3888 |
| DOI: | 10.1002/pen.10505 |
| Popis: | The structures of low-density polyethylene (LDPE) modified by in situ sorption and thermal polymerization of 4-vinylpyridine (4VP) and of methyl methacrylate (MMA) were studied. The phase behavior of these materials was investigated by means of X-ray diffraction, scanning electron microscopy (SEM), and by thermal measurements (DSC). The diffraction studies indicated that the polymerization occurs at the amorphous domains of the matrix, except for the case of 4VP (168.0%), in which polymerization at the crystalline domains of LDPE matrix was also observed. These materials showed at least two T g values, indicating microphase separation. The morphology of LDPE-P4VP was different from that of LDPE-PMMA. |
| Databáze: | OpenAIRE |
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