Iannace, Francesca
(2008)
Influence of carbon nanotubes on the properties of films of polypropylene prepared by film blowing.
[Tesi di dottorato]
(Unpublished)
| Item Type: |
Tesi di dottorato
|
| Lingua: |
English |
| Title: |
Influence of carbon nanotubes on the properties of films of polypropylene prepared by film blowing |
| Creators: |
| Creators | Email |
|---|
| Iannace, Francesca | UNSPECIFIED |
|
| Date: |
2008 |
| Date Type: |
Publication |
| Number of Pages: |
197 |
| Institution: |
Università degli Studi di Napoli Federico II |
| Department: |
Ingegneria dei materiali e della produzione |
| Dottorato: |
Ingegneria dei materiali e delle strutture |
| Ciclo di dottorato: |
20 |
| Coordinatore del Corso di dottorato: |
| nome | email |
|---|
| Acierno, Domenico | UNSPECIFIED |
|
| Tutor: |
| nome | email |
|---|
| Acierno, Domenico | UNSPECIFIED |
|
| Date: |
2008 |
| Number of Pages: |
197 |
| Uncontrolled Keywords: |
Carbon; Nanotubes; Film |
| Settori scientifico-disciplinari del MIUR: |
Area 09 - Ingegneria industriale e dell'informazione > ING-IND/22 - Scienza e tecnologia dei materiali |
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| Date Deposited: |
23 May 2008 |
| Last Modified: |
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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