Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocomposites
This 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 we...
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| Format: | Article |
| Language: | English |
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Budapest University of Technology and Economics
2015-10-01
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| Series: | eXPRESS Polymer Letters |
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| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0006230&mi=cd |
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| author | S. D. A. S. Ramoa G. M. O. Barra C. Merlini S. Livi B. G. Soares A. Pegoretti |
| author_facet | S. D. A. S. Ramoa G. M. O. Barra C. Merlini S. Livi B. G. Soares A. Pegoretti |
| author_sort | S. D. A. S. Ramoa |
| collection | DOAJ |
| description | This 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. |
| format | Article |
| id | doaj-art-e49ed1d4d6fc42b790a791e953fadce2 |
| institution | Kabale University |
| issn | 1788-618X |
| language | English |
| publishDate | 2015-10-01 |
| publisher | Budapest University of Technology and Economics |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj-art-e49ed1d4d6fc42b790a791e953fadce22025-08-20T03:38:45ZengBudapest University of Technology and EconomicseXPRESS Polymer Letters1788-618X2015-10-0191094595810.3144/expresspolymlett.2015.85Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocompositesS. D. A. S. RamoaG. M. O. BarraC. MerliniS. LiviB. G. SoaresA. PegorettiThis 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.http://www.expresspolymlett.com/letolt.php?file=EPL-0006230&mi=cdNanocompositesPolymer compositesRheology |
| spellingShingle | S. D. A. S. Ramoa G. M. O. Barra C. Merlini S. Livi B. G. Soares A. Pegoretti Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocomposites eXPRESS Polymer Letters Nanocomposites Polymer composites Rheology |
| title | Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocomposites |
| title_full | Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocomposites |
| title_fullStr | Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocomposites |
| title_full_unstemmed | Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocomposites |
| title_short | Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocomposites |
| title_sort | novel electrically conductive polyurethane montmorillonite polypyrrole nanocomposites |
| topic | Nanocomposites Polymer composites Rheology |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0006230&mi=cd |
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