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EnglishThis work describes the production of electrically conductive nanocomposites based on thermoplastic polyurethane (TPU) filled with montmorillonite-dodecylbenzenesulfonic acid-doped polypyrrole (Mt-PPy.DBSA) prepared by melt blending in an internal mixer. The electrical conductivity, morphology as well as the rheological properties of TPU/Mt-PPy.DBSA nanocomposites were evaluated and compared with those of TPU nanocomposites containing different conductive fillers, such as polypyrrole doped with hydrochloride acid (PPy.Cl) or dodecylbenzenesulfonic acid (PPy.DBSA) or montmorillonite-hydrochloride acid-doped polypyrrole (Mt-PPy.Cl), prepared with the same procedure. The TPU/Mt-PPy.DBSA nanocomposites display a very sharp insulator-conductor transition and the electrical percolation threshold was about 10 wt% of Mt-PPy.DBSA, which was significantly lower than those found for TPU/Mt-PPy.Cl, TPU/PPy.Cl and TPU/PPy.DBSA. Morphological analysis highlights that Mt-PPy.DBSA filler was better distributed and dispersed in the TPU matrix, forming a denser conductive network when compared to Mt-PPy.Cl, PPy.Cl and PPy.DBSA fillers. This morphology can be attributed to the higher site-specific interaction between TPU matrix and Mt-PPy.DBSA. The present study demonstrated the potential use of Mt-PPy.DBSA as new promising conductive nanofiller to produce highly conductive polymer nanocomposites with functional properties.
Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocomposites / Ramoa, S. D. A. S; Barra, G. M. O.; Merlini, Claudia; Livi, S.; Soares, B. G.; Pegoretti, Alessandro. - In: EXPRESS POLYMER LETTERS. - ISSN 1788-618X. - STAMPA. - 9:10(2015), pp. 945-958.
| Titolo: | Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocomposites |
| Autori: | Ramoa, S. D. A. S; Barra, G. M. O.; Merlini, Claudia; Livi, S.; Soares, B. G.; Pegoretti, Alessandro |
| Autori Unitn: | |
| Titolo del periodico: | EXPRESS POLYMER LETTERS |
| Anno di pubblicazione: | 2015 |
| Numero e parte del fascicolo: | 10 |
| Codice identificativo Scopus: | 2-s2.0-84938545039 |
| Codice identificativo ISI: | WOS:000359322400008 |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.3144/expresspolymlett.2015.85 |
| Handle: | http://hdl.handle.net/11572/111266 |
| Citazione: | Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocomposites / Ramoa, S. D. A. S; Barra, G. M. O.; Merlini, Claudia; Livi, S.; Soares, B. G.; Pegoretti, Alessandro. - In: EXPRESS POLYMER LETTERS. - ISSN 1788-618X. - STAMPA. - 9:10(2015), pp. 945-958. |
| Appare nelle tipologie: | 03.1 Articolo su rivista (Journal article) |
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| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| 151-Ramoa-PU-MMT-PPy-nanocomp_EPL-2015.pdf | Versione editoriale (Publisher’s layout) | Tutti i diritti riservati (All rights reserved) | Open Access Visualizza/Apri |
http://hdl.handle.net/11572/111266
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