Morphology of a melt crystallized iPP/HDPE/Hydrogenated hydrocarbon resin blend (Articolo in rivista)

Type
Label
  • Morphology of a melt crystallized iPP/HDPE/Hydrogenated hydrocarbon resin blend (Articolo in rivista) (literal)
Anno
  • 2003-01-01T00:00:00+01:00 (literal)
Alternative label
  • Cimmino S., Silvestre C., Pirozzi B. (2003)
    Morphology of a melt crystallized iPP/HDPE/Hydrogenated hydrocarbon resin blend
    in Polymer (Guildford)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Cimmino S., Silvestre C., Pirozzi B. (literal)
Pagina inizio
  • 4273 (literal)
Pagina fine
  • 4281 (literal)
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  • Impact Factor 2004: 2.340 (literal)
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  • 44 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • No. Citazione=5; Autocitazione=2; Motore utilizzato per le citazioni=Google Scholar. (literal)
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  • This paper deals with the modification of isotactic polypropylene with low molecular mass resins, with the final aim to obtain films to be used in the food packaging sector. Isotactic polypropylene is a world-wide used polymer with a very high production predicted for the next years to increase around the 10%. Although its good properties as virgin materials, there is a remarkable effort to find additives, to improve some properties for special-purpose applications.We have found that adding a few amount of a low molecular resin to iPP, materials with tailored properties can be obtained.The addition causes drastic modification in the structure and morphology of polypropylene that are also critically dependent on crystallization conditions. The paper under valuation underlines the fundamental role of the crystallization conditions on the morphology and hence on the properties of polymer materials. Infact, changing the cooling rate of only few degrees for minute, dramatic substantial changes in the iPP spherulites dimensions as well as in the resulting phase structure of the blend are observed. In this way that is possible to translate microscopic manipulation into macroscopic performance enhancements. It was found that a new family of a spherulites of iPP, with specific morphological, kinetic and thermal behaviours can be activated.Nucleation of these spherulites has been explained by using the approach of nucleus migration in polymer blends. (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR, Università di Napoli Federico II. (literal)
Titolo
  • Morphology of a melt crystallized iPP/HDPE/Hydrogenated hydrocarbon resin blend (literal)
Abstract
  • The structure, phase structure, morphology, crystallization and melting behaviour of isotactic polypropylene blended with a master batch (MB), formed by high density polyethylene and hydrogenated hydrocarbon resin (iPP/MB), have been in details investigated by using X-ray diffraction, optical microscopy and differential scanning calorimetry. It was found that the structure and morphology depend on crystallization conditions. A new family of a spherulites of iPP, (type I spherulites), can be activated using appropriate crystallization conditions. Nucleation of these spherulites has been explained by using the approach of nucleus migration in polymer blends. Type I spherulites present specific morphological, kinetic and thermal behaviours. In particular it was found that the growth rate of type I spherulites, at a given Tc, is higher than the growth rate of spherulites grown from plain iPP. (literal)
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