Ianniello, Vincenzo (2023) Rheological Determination of Polyolefin Architecture. [Tesi di dottorato]
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| Tipologia del documento: | Tesi di dottorato |
|---|---|
| Lingua: | English |
| Titolo: | Rheological Determination of Polyolefin Architecture |
| Autori: | Autore Email Ianniello, Vincenzo vincenzo.ianniello@unina.it |
| Data: | 2023 |
| Numero di pagine: | 145 |
| Istituzione: | Università degli Studi di Napoli Federico II |
| Dipartimento: | Ingegneria Chimica, dei Materiali e della Produzione Industriale |
| Dottorato: | Ingegneria dei prodotti e dei processi industriali |
| Ciclo di dottorato: | 35 |
| Coordinatore del Corso di dottorato: | nome email D'anna, Andrea anddanna@unina.it |
| Tutor: | nome email Grizzuti, Nino [non definito] Tervoort, Theo [non definito] |
| Data: | 2023 |
| Numero di pagine: | 145 |
| Parole chiave: | Rheology, Polymer Solution, Molecular Weight Distribution |
| Settori scientifico-disciplinari del MIUR: | Area 09 - Ingegneria industriale e dell'informazione > ING-IND/24 - Principi di ingegneria chimica |
| Depositato il: | 22 Mar 2023 12:03 |
| Ultima modifica: | 10 Apr 2025 14:23 |
| URI: | http://www.fedoa.unina.it/id/eprint/15230 |
Abstract
The present work concerns the use of rheology to obtain quantitative information on the microstructure of polyolefin-based materials. Such properties have crucial implications along both directions of the chain-of-knowledge of polymeric materials. Moving backwards, in the direction of polymer synthesis, rheology is able to link the material response to the details of the molecular architecture. Moving forwards, in the direction of technological applications, rheology is able to provide a relevant link to the processing as well as to the final material properties. Determining the molecular structure of polyolefin-based materials is a relevant scientific and technological challenge. Molecular weight, its distribution, and structural details are fundamental parameters for materials design and processing, but often difficult to ascertain. The main objective of the present work is to study the molecular details of specific polyolefin-based systems through an innovative rheological approach. Linear rheology is measured in concentrated, entangled solutions, instead of melts, thus overcoming some intrinsic experimental difficulties encountered in measuring the latter. Molecular models and constitutive equations for entangled solutions are used to extract the quantitatively relevant microstructural information.
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