Polyethylene-polyaniline Nanofiber Composites: Evaluation of Experimental Conditions of in situ Polymerization
The difficult processability of polyaniline (PAni) can be overcome by preparing composites with high density polyethylene (HDPE), resulting in a conducting material with improved mechanical properties. PAni nanofibers were synthesized in this research using a rapid mixing method, while HDPE/PAni com...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2015-10-01
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| Series: | Materials Research |
| Subjects: | |
| Online Access: | http://www.scielo.br/pdf/mr/v18s2/1516-1439-mr-1516-1439348914.pdf |
| _version_ | 1819003821213351936 |
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| author | Ana Paula Graebin Leila Bonnaud Olivier Persenaire Oltea Murariu Philippe Dubois Zenis Novais da Rocha Nara Regina de Souza Basso |
| author_facet | Ana Paula Graebin Leila Bonnaud Olivier Persenaire Oltea Murariu Philippe Dubois Zenis Novais da Rocha Nara Regina de Souza Basso |
| author_sort | Ana Paula Graebin |
| collection | DOAJ |
| description | The difficult processability of polyaniline (PAni) can be overcome by preparing composites with high density polyethylene (HDPE), resulting in a conducting material with improved mechanical properties. PAni nanofibers were synthesized in this research using a rapid mixing method, while HDPE/PAni composites were prepared by in situ polymerization using Cp2ZrCl2/MAO as a catalyst system. Different experimental conditions for polymerization and an electrochemical study were performed. The findings confirmed that the addition of small amounts of Pani (up to 7%) and longer impregnation (120 min) with methylaluminoxane (MAO) before polymerization are important factors contributing to increased catalytic activity. Analysis by cyclic and differential pulse voltammetry indicates that MAO reacts with the PAni in the ethylene polymerization process, and forms active species in the presence of the catalyst. Changes in catalytic activity may be due to the kinetic consumption of the active species, which become less important in the presence of PAni. |
| first_indexed | 2024-12-20T23:27:05Z |
| format | Article |
| id | doaj.art-602fd3077a424b0a9400d4acf793beff |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-12-20T23:27:05Z |
| publishDate | 2015-10-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-602fd3077a424b0a9400d4acf793beff2022-12-21T19:23:22ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392015-10-0118suppl 212112610.1590/1516-1439.348914Polyethylene-polyaniline Nanofiber Composites: Evaluation of Experimental Conditions of in situ PolymerizationAna Paula GraebinLeila BonnaudOlivier PersenaireOltea MurariuPhilippe DuboisZenis Novais da RochaNara Regina de Souza BassoThe difficult processability of polyaniline (PAni) can be overcome by preparing composites with high density polyethylene (HDPE), resulting in a conducting material with improved mechanical properties. PAni nanofibers were synthesized in this research using a rapid mixing method, while HDPE/PAni composites were prepared by in situ polymerization using Cp2ZrCl2/MAO as a catalyst system. Different experimental conditions for polymerization and an electrochemical study were performed. The findings confirmed that the addition of small amounts of Pani (up to 7%) and longer impregnation (120 min) with methylaluminoxane (MAO) before polymerization are important factors contributing to increased catalytic activity. Analysis by cyclic and differential pulse voltammetry indicates that MAO reacts with the PAni in the ethylene polymerization process, and forms active species in the presence of the catalyst. Changes in catalytic activity may be due to the kinetic consumption of the active species, which become less important in the presence of PAni.http://www.scielo.br/pdf/mr/v18s2/1516-1439-mr-1516-1439348914.pdfpolyanilinepolyethylenecyclic voltammetrycomposites |
| spellingShingle | Ana Paula Graebin Leila Bonnaud Olivier Persenaire Oltea Murariu Philippe Dubois Zenis Novais da Rocha Nara Regina de Souza Basso Polyethylene-polyaniline Nanofiber Composites: Evaluation of Experimental Conditions of in situ Polymerization Materials Research polyaniline polyethylene cyclic voltammetry composites |
| title | Polyethylene-polyaniline Nanofiber Composites: Evaluation of Experimental Conditions of in situ Polymerization |
| title_full | Polyethylene-polyaniline Nanofiber Composites: Evaluation of Experimental Conditions of in situ Polymerization |
| title_fullStr | Polyethylene-polyaniline Nanofiber Composites: Evaluation of Experimental Conditions of in situ Polymerization |
| title_full_unstemmed | Polyethylene-polyaniline Nanofiber Composites: Evaluation of Experimental Conditions of in situ Polymerization |
| title_short | Polyethylene-polyaniline Nanofiber Composites: Evaluation of Experimental Conditions of in situ Polymerization |
| title_sort | polyethylene polyaniline nanofiber composites evaluation of experimental conditions of in situ polymerization |
| topic | polyaniline polyethylene cyclic voltammetry composites |
| url | http://www.scielo.br/pdf/mr/v18s2/1516-1439-mr-1516-1439348914.pdf |
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