Thermal ageing of conducting polymeric composites
The electrical properties of polymer composites—polyethylene/carbon black (PE/CB), polyethylene/carbon black modified by polypyrrole (PE/CB-PPy), and polyethylene/carbon black modified by polyaniline (PE/CB-PANI)—were investigated during slow cyclic heating and cooling thermal ageing. Conductivity i...
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| Veröffentlicht in: | Polymer degradation and stability 2003, Vol.82 (2), p.251-256 |
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| container_title | Polymer degradation and stability |
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| creator | Omastová, Mária Podhradská, Silvia Prokeš, Jan Janigová, Ivica Stejskal, Jaroslav |
| description | The electrical properties of polymer composites—polyethylene/carbon black (PE/CB), polyethylene/carbon black modified by polypyrrole (PE/CB-PPy), and polyethylene/carbon black modified by polyaniline (PE/CB-PANI)—were investigated during slow cyclic heating and cooling thermal ageing. Conductivity in composites was measured in heating/cooling cycles in the temperature range from 16 to 125 °C. Scanning electron microscopy was used for morphology study of surface of modified CB particles. It was found that the thermal treatment resulted in a conductivity increase in all composites when heated below the melting point of PE. This effect was explained by increased crystallinity in the polymer matrix of thermally treated composites and confirmed by DSC analysis. The thermal ageing during the heating above the melting point of polymer matrix caused decrease in conductivity of PE/CB composites, but increase of conductivity in composites containing CB-PPy or CB-PANI as a filler. The modified fillers create more perfect and thermally resistant conducting network in PE matrix. The temperature of decomposition maximum of PE/CB-PPy and PE/CB-PANI composites into higher compared with PE/CB composite as observed by thermogravimetric analysis. |
| doi_str_mv | 10.1016/S0141-3910(03)00218-0 |
| format | Article |
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Conductivity in composites was measured in heating/cooling cycles in the temperature range from 16 to 125 °C. Scanning electron microscopy was used for morphology study of surface of modified CB particles. It was found that the thermal treatment resulted in a conductivity increase in all composites when heated below the melting point of PE. This effect was explained by increased crystallinity in the polymer matrix of thermally treated composites and confirmed by DSC analysis. The thermal ageing during the heating above the melting point of polymer matrix caused decrease in conductivity of PE/CB composites, but increase of conductivity in composites containing CB-PPy or CB-PANI as a filler. The modified fillers create more perfect and thermally resistant conducting network in PE matrix. 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Conductivity in composites was measured in heating/cooling cycles in the temperature range from 16 to 125 °C. Scanning electron microscopy was used for morphology study of surface of modified CB particles. It was found that the thermal treatment resulted in a conductivity increase in all composites when heated below the melting point of PE. This effect was explained by increased crystallinity in the polymer matrix of thermally treated composites and confirmed by DSC analysis. The thermal ageing during the heating above the melting point of polymer matrix caused decrease in conductivity of PE/CB composites, but increase of conductivity in composites containing CB-PPy or CB-PANI as a filler. The modified fillers create more perfect and thermally resistant conducting network in PE matrix. The temperature of decomposition maximum of PE/CB-PPy and PE/CB-PANI composites into higher compared with PE/CB composite as observed by thermogravimetric analysis.</description><subject>Applied sciences</subject><subject>Carbon black</subject><subject>Composites</subject><subject>Conductivity</subject><subject>Exact sciences and technology</subject><subject>Forms of application and semi-finished materials</subject><subject>Polyaniline</subject><subject>Polyethylene</subject><subject>Polymer industry, paints, wood</subject><subject>Polypyrrole</subject><subject>Technology of polymers</subject><subject>Thermal ageing</subject><issn>0141-3910</issn><issn>1873-2321</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNqFkEtLAzEQx4MoWKsfQehF0cNqJvtIchIpvqDgwXoO2WRSI7ubmmyFfnu3D_ToXObBb2b4_wk5B3oDFKrbNwoFZLkEekXza0oZiIwekBEInmcsZ3BIRr_IMTlJ6ZMOUZQwIjD_wNjqZqIX6LvFJLiJCZ1dmX7TLUOzbjF6MwzbZUi-x3RKjpxuEp7t85i8Pz7Mp8_Z7PXpZXo_y0xeiT7TskJaSc5FWZeycrXl1lhWWGFA1EIKXmjHLdcFVgBUaFZSyaTjTovaSZuPyeXu7jKGrxWmXrU-GWwa3WFYJcUEZYMINoDlDjQxpBTRqWX0rY5rBVRtDFJbg9RGvaK52ho0FGNysX-gk9GNi7ozPv0tl8AFFWLg7nYcDmq_PUaVjMfOoPURTa9s8P98-gFBHnk1</recordid><startdate>2003</startdate><enddate>2003</enddate><creator>Omastová, Mária</creator><creator>Podhradská, Silvia</creator><creator>Prokeš, Jan</creator><creator>Janigová, Ivica</creator><creator>Stejskal, Jaroslav</creator><general>Elsevier Ltd</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>2003</creationdate><title>Thermal ageing of conducting polymeric composites</title><author>Omastová, Mária ; Podhradská, Silvia ; Prokeš, Jan ; Janigová, Ivica ; Stejskal, Jaroslav</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c368t-a96e0697785b596fbd7dcd24d8c18b89874af7d7a4e61108a250929f7fa8bf9d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Applied sciences</topic><topic>Carbon black</topic><topic>Composites</topic><topic>Conductivity</topic><topic>Exact sciences and technology</topic><topic>Forms of application and semi-finished materials</topic><topic>Polyaniline</topic><topic>Polyethylene</topic><topic>Polymer industry, paints, wood</topic><topic>Polypyrrole</topic><topic>Technology of polymers</topic><topic>Thermal ageing</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Omastová, Mária</creatorcontrib><creatorcontrib>Podhradská, Silvia</creatorcontrib><creatorcontrib>Prokeš, Jan</creatorcontrib><creatorcontrib>Janigová, Ivica</creatorcontrib><creatorcontrib>Stejskal, Jaroslav</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Polymer degradation and stability</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Omastová, Mária</au><au>Podhradská, Silvia</au><au>Prokeš, Jan</au><au>Janigová, Ivica</au><au>Stejskal, Jaroslav</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thermal ageing of conducting polymeric composites</atitle><jtitle>Polymer degradation and stability</jtitle><date>2003</date><risdate>2003</risdate><volume>82</volume><issue>2</issue><spage>251</spage><epage>256</epage><pages>251-256</pages><issn>0141-3910</issn><eissn>1873-2321</eissn><coden>PDSTDW</coden><abstract>The electrical properties of polymer composites—polyethylene/carbon black (PE/CB), polyethylene/carbon black modified by polypyrrole (PE/CB-PPy), and polyethylene/carbon black modified by polyaniline (PE/CB-PANI)—were investigated during slow cyclic heating and cooling thermal ageing. 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| fulltext | fulltext |
| identifier | ISSN: 0141-3910 |
| ispartof | Polymer degradation and stability, 2003, Vol.82 (2), p.251-256 |
| issn | 0141-3910 1873-2321 |
| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Applied sciences Carbon black Composites Conductivity Exact sciences and technology Forms of application and semi-finished materials Polyaniline Polyethylene Polymer industry, paints, wood Polypyrrole Technology of polymers Thermal ageing |
| title | Thermal ageing of conducting polymeric composites |
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