Nasti, Giuseppe
(2016)
Selective localization of nanoparticles in microstructured systems.
[Tesi di dottorato]
| Item Type: |
Tesi di dottorato
|
| Lingua: |
English |
| Title: |
Selective localization of nanoparticles in microstructured systems |
| Creators: |
| Creators | Email |
|---|
| Nasti, Giuseppe | giuseppe.nasti@unina.it |
|
| Date: |
30 March 2016 |
| Number of Pages: |
112 |
| Institution: |
Università degli Studi di Napoli Federico II |
| Department: |
Ingegneria Chimica, dei Materiali e della Produzione Industriale |
| Scuola di dottorato: |
Ingegneria industriale |
| Dottorato: |
Ingegneria dei materiali e delle strutture |
| Ciclo di dottorato: |
28 |
| Coordinatore del Corso di dottorato: |
| nome | email |
|---|
| Mensitieri, Giuseppe | giuseppe.mensitieri@unina.it |
|
| Tutor: |
| nome | email |
|---|
| Ambrogi, Veronica | UNSPECIFIED | | Gentile, Gennaro | UNSPECIFIED | | Cerruti, Pierfrancesco | UNSPECIFIED |
|
| Date: |
30 March 2016 |
| Number of Pages: |
112 |
| Uncontrolled Keywords: |
polymer, nanoparticles, nanocomposites |
| Settori scientifico-disciplinari del MIUR: |
Area 03 - Scienze chimiche > CHIM/07 - Fondamenti chimici delle tecnologie |
[error in script]
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| Date Deposited: |
12 Apr 2016 23:40 |
| Last Modified: |
31 Oct 2016 11:01 |
| URI: |
http://www.fedoa.unina.it/id/eprint/10854 |
Abstract
The research activities carried out during the doctoral program focused on selective localization of nanoparticles in microstructured polymer systems. Three distinct processes, very different from each other, were employed to achieve similar results.
The first area of research has involved the selective localization of the carbon nanotubes within a biphasic and bicontinuous blend of polystyrene and polylactic acid, obtained by melt mixing the two thermoplastic polymers. Nanoparticles were selectively dispersed in the polystyrene phase achieving a lower percolation threshold than the initial one.
In the second line of research, carried out in collaboration with the Soft Matter Physics group of the Adolphe Merkle Institute (Fribourg, Switzerland), hybrid organometallic perovkite nanocrystals were produced by precipitation in liquid phase. These nanocrystals were then incorporated into a thin film of polyethylene glycol diacrylate deposited by spin-coating on a glass substrate. The polymer crosslinking, triggered by exposure to an oxygen plasma, induced the formation of corrugations on the film surface (wrinkles) allowing the microstructuring of the perovskite.
In the third line of research, carried out in collaboration with the National Institute of Optics (INO-CNR), selective localization of quantum dots in polydimethylsiloxane microlenses on a pyroelectric lithium niobate substrate were achieved through electrohydrodynamic and dielectrophoretic mechanisms. The lithium niobate substrate was periodically poled in an hexagonal pattern using finite element simulations to predict the final position of particles.
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