Morphology, Microhardness and Flammability of Compatibilized Polyethylene/Clay Nanocomposites (Articolo in rivista)

Type
Label
  • Morphology, Microhardness and Flammability of Compatibilized Polyethylene/Clay Nanocomposites (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Alternative label
  • L. Minkova, Y. Peneva, M. Valcheva, S. Filippi, M. Pracella, I. Anguillesi, P. Magagnini (2010)
    Morphology, Microhardness and Flammability of Compatibilized Polyethylene/Clay Nanocomposites
    in Polymer engineering and science
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • L. Minkova, Y. Peneva, M. Valcheva, S. Filippi, M. Pracella, I. Anguillesi, P. Magagnini (literal)
Pagina inizio
  • 1306 (literal)
Pagina fine
  • 1314 (literal)
Rivista
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  • Published Online: Mar 17 2010, DOI: 10.1002/pen.21659 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
  • Morphology, thermal properties, and microhardness of ethylene-glycidyl methacrylate copolymer (EGMA)/clay and ethylene-acrylic ester-glycidyl methacrylate terpolymer (EAGMA)/clay nanocomposites with different clay concentrations have been studied. The results have shown that EGMA and EAGMA are highly compatible with the organoclays Cloisite120A (Cl20A) and Cloisite130B (Cl30B). Intercalated structures are formed in the whole range of Cl20A loadings investigated, whereas partial degradation of the Cl30B organoclay was observed. The thermal characteristics and microhardness of EGMA/clay nanocomposites suggest that the filler dispersion deteriorates at high concentration. The concentrated EGMA/Cl20A nanocomposites have been used as masterbatches to prepare ternary high density polyethylene (HDPE)/Cl20A and low density polyethylene (LDPE)/Cl20A nanocomposites. Diffractometric characterization and scanning electron microscopy observations of these materials have shown that the intercalated structure of the starting EGMA/Cl20A masterbatches is preserved after dilution with the polyolefins. The results suggest that the silicate platelets remain localized within the EGMA droplets in the diluted nanocomposites. The latter display improved microhardness, whereas the mechanical properties, including elongation at break, are comparable with those of the neat polyolefins. Considerable enhancement of the flame retardant properties has been observed for the ternary nanocomposites. POLYM. ENG. SCI., 00:000–000, 2010. ª2010 Society of Plastics Engineers (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • L. Minkova, Y. Peneva, M. Valcheva: Institute of Polymers, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria S. Filippi, I. Anguillesi, P. Magagnini: Department of Chemical Engineering and Materials Science, University of Pisa, Pisa 56122, Italy (literal)
Titolo
  • Morphology, Microhardness and Flammability of Compatibilized Polyethylene/Clay Nanocomposites (literal)
Abstract
  • Morphology, thermal properties, and microhardness of ethylene-glycidyl methacrylate copolymer (EGMA)/clay and ethylene-acrylic ester-glycidyl methacrylate terpolymer (EAGMA)/clay nanocomposites with different clay concentrations have been studied. The results have shown that EGMA and EAGMA are highly compatible with the organoclays Cloisite®20A (Cl20A) and Cloisite®30B (Cl30B). Intercalated structures are formed in the whole range of Cl20A loadings investigated, whereas partial degradation of the Cl30B organoclay was observed. The thermal characteristics and microhardness of EGMA/clay nanocomposites suggest that the filler dispersion deteriorates at high concentration. The concentrated EGMA/Cl20A nanocomposites have been used as masterbatches to prepare ternary high density polyethylene (HDPE)/Cl20A and low density polyethylene (LDPE)/Cl20A nanocomposites. Diffractometric characterization and scanning electron microscopy observations of these materials have shown that the intercalated structure of the starting EGMA/Cl20A masterbatches is preserved after dilution with the polyolefins. The results suggest that the silicate platelets remain localized within the EGMA droplets in the diluted nanocomposites. The latter display improved microhardness, whereas the mechanical properties, including elongation at break, are comparable with those of the neat polyolefins. Considerable enhancement of the flame retardant properties has been observed for the ternary nanocomposites. (literal)
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