Iannace, Francesca (2008) Influence of carbon nanotubes on the properties of films of polypropylene prepared by film blowing. [Tesi di dottorato] (Inedito)

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Tipologia del documento: Tesi di dottorato
Lingua: English
Titolo: Influence of carbon nanotubes on the properties of films of polypropylene prepared by film blowing
Autori:
AutoreEmail
Iannace, Francesca[non definito]
Data: 2008
Tipo di data: Pubblicazione
Numero di pagine: 197
Istituzione: Università degli Studi di Napoli Federico II
Dipartimento: Ingegneria dei materiali e della produzione
Dottorato: Ingegneria dei materiali e delle strutture
Ciclo di dottorato: 20
Coordinatore del Corso di dottorato:
nomeemail
Acierno, Domenico[non definito]
Tutor:
nomeemail
Acierno, Domenico[non definito]
Data: 2008
Numero di pagine: 197
Parole chiave: Carbon; Nanotubes; Film
Settori scientifico-disciplinari del MIUR: Area 09 - Ingegneria industriale e dell'informazione > ING-IND/22 - Scienza e tecnologia dei materiali
Depositato il: 23 Mag 2008
Ultima modifica: 30 Apr 2014 19:28
URI: http://www.fedoa.unina.it/id/eprint/1898
DOI: 10.6092/UNINA/FEDOA/1898

Abstract

The influence of carbon nanotubes on mechanical and bielongational properties of films of polypropylene prepared with film blowing technique were studied. The carbon nanotubes (CNTs) adopted as fillers were contained in a polypropylene pre-compounded with 20 wt% of carbon nanotubes (masterbatches). To investigate on the effect of moelecular and/or carbon nanotube orientation on the mechanical properties of PP, the tensile test were performed eiher on suitable composite sample plates, obtained by pressing the granulated melt- mixed composites, either on film samples. Furhermore, blown film samples were tested either in the blow-up direction (BD) either the take -up one (TD). Different response to the tensile tests were displayed by the blown films samples in the two directions of testing as a consequence of the biaxial orientation of molecules (and/or the carbon nanotubes) during the film blowing. Excellent improvement of the mechanical properties (Young’s modulus and strength) for certain weight fractions of CNT of the blown composite films compared to the neat PP were revealed. Furthermore, the bubble formation and stability in the film blowing process of PP nanocomposites were correlated to their underlying rheology, structure, and crystallization behavior.

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