Studies on the thermal stability and degradation kinetics of Pd/PC nanocomposites
Effect of heating rate, Pd content, and synthesis method on the thermal stability of the ex situ and in situ Palladium/polycarbonate (Pd/PC) nanocomposites was investigated. TEM images revealed discrete Pd nanoclusters of about 5 and 15 nm sizes for 1 and 2 vol % ex situ nanocomposites, respectively...
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| Veröffentlicht in: | Journal of applied polymer science 2010-12, Vol.118 (6), p.3602-3611 |
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| container_title | Journal of applied polymer science |
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| creator | Onbattuvelli, Valmikanathan P Rochefort, Willie E Simonsen, John Park, Seong-Jin German, Randall M Atre, Sundar V |
| description | Effect of heating rate, Pd content, and synthesis method on the thermal stability of the ex situ and in situ Palladium/polycarbonate (Pd/PC) nanocomposites was investigated. TEM images revealed discrete Pd nanoclusters of about 5 and 15 nm sizes for 1 and 2 vol % ex situ nanocomposites, respectively. However, agglomerated Pd nanoclusters were noticed in the in situ samples, irrespective of the Pd content. The ex situ Pd/PC nanocomposites showed high onset temperature (Ti) for thermal degradation of PC than the in situ and pure PC samples. Pd content and heating rates were found to have a positive influence on the Ti and Tm (temperature at the maximum degradation rate occurs) of the Pd/PC nanocomposites. Thermal degradation of the PC was found to follow the first-order kinetics in the Pd/PC nanocomposites. The activation energies associated with the degradation were determined by using the Kissinger method. These activation energies are used to construct the Master decomposition curve (MDC) and weight-time-temperature (α-t-T) plots that describe the time-temperature dependence of the PC pyrolysis in the Pd/PC nanocomposites. These constructed α-t-T plots were validated with the data from isothermal measurements. |
| doi_str_mv | 10.1002/app.32403 |
| format | Article |
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TEM images revealed discrete Pd nanoclusters of about 5 and 15 nm sizes for 1 and 2 vol % ex situ nanocomposites, respectively. However, agglomerated Pd nanoclusters were noticed in the in situ samples, irrespective of the Pd content. The ex situ Pd/PC nanocomposites showed high onset temperature (Ti) for thermal degradation of PC than the in situ and pure PC samples. Pd content and heating rates were found to have a positive influence on the Ti and Tm (temperature at the maximum degradation rate occurs) of the Pd/PC nanocomposites. Thermal degradation of the PC was found to follow the first-order kinetics in the Pd/PC nanocomposites. The activation energies associated with the degradation were determined by using the Kissinger method. These activation energies are used to construct the Master decomposition curve (MDC) and weight-time-temperature (α-t-T) plots that describe the time-temperature dependence of the PC pyrolysis in the Pd/PC nanocomposites. These constructed α-t-T plots were validated with the data from isothermal measurements.</description><identifier>ISSN: 0021-8995</identifier><identifier>ISSN: 1097-4628</identifier><identifier>EISSN: 1097-4628</identifier><identifier>DOI: 10.1002/app.32403</identifier><identifier>CODEN: JAPNAB</identifier><language>eng</language><publisher>Hoboken: Wiley Subscription Services, Inc., A Wiley Company</publisher><subject>activation energy ; Applied sciences ; Composites ; Degradation ; degradation kinetics ; Exact sciences and technology ; Forms of application and semi-finished materials ; Nanocomposites ; Nanomaterials ; Nanostructure ; Palladium ; palladium/polycarbonate nanocomposites ; Polycarbonates ; Polymer industry, paints, wood ; Technology of polymers ; Thermal degradation ; Titanium</subject><ispartof>Journal of applied polymer science, 2010-12, Vol.118 (6), p.3602-3611</ispartof><rights>Copyright © 2010 Wiley Periodicals, Inc.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3933-3e1d9cb86a7d88bdfaa7f603152703a406bad8ab4c8c7c2d614f8b82dcc7e68b3</citedby><cites>FETCH-LOGICAL-c3933-3e1d9cb86a7d88bdfaa7f603152703a406bad8ab4c8c7c2d614f8b82dcc7e68b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fapp.32403$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fapp.32403$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=23297372$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Onbattuvelli, Valmikanathan P</creatorcontrib><creatorcontrib>Rochefort, Willie E</creatorcontrib><creatorcontrib>Simonsen, John</creatorcontrib><creatorcontrib>Park, Seong-Jin</creatorcontrib><creatorcontrib>German, Randall M</creatorcontrib><creatorcontrib>Atre, Sundar V</creatorcontrib><title>Studies on the thermal stability and degradation kinetics of Pd/PC nanocomposites</title><title>Journal of applied polymer science</title><addtitle>J. Appl. Polym. Sci</addtitle><description>Effect of heating rate, Pd content, and synthesis method on the thermal stability of the ex situ and in situ Palladium/polycarbonate (Pd/PC) nanocomposites was investigated. TEM images revealed discrete Pd nanoclusters of about 5 and 15 nm sizes for 1 and 2 vol % ex situ nanocomposites, respectively. However, agglomerated Pd nanoclusters were noticed in the in situ samples, irrespective of the Pd content. The ex situ Pd/PC nanocomposites showed high onset temperature (Ti) for thermal degradation of PC than the in situ and pure PC samples. Pd content and heating rates were found to have a positive influence on the Ti and Tm (temperature at the maximum degradation rate occurs) of the Pd/PC nanocomposites. Thermal degradation of the PC was found to follow the first-order kinetics in the Pd/PC nanocomposites. The activation energies associated with the degradation were determined by using the Kissinger method. These activation energies are used to construct the Master decomposition curve (MDC) and weight-time-temperature (α-t-T) plots that describe the time-temperature dependence of the PC pyrolysis in the Pd/PC nanocomposites. These constructed α-t-T plots were validated with the data from isothermal measurements.</description><subject>activation energy</subject><subject>Applied sciences</subject><subject>Composites</subject><subject>Degradation</subject><subject>degradation kinetics</subject><subject>Exact sciences and technology</subject><subject>Forms of application and semi-finished materials</subject><subject>Nanocomposites</subject><subject>Nanomaterials</subject><subject>Nanostructure</subject><subject>Palladium</subject><subject>palladium/polycarbonate nanocomposites</subject><subject>Polycarbonates</subject><subject>Polymer industry, paints, wood</subject><subject>Technology of polymers</subject><subject>Thermal degradation</subject><subject>Titanium</subject><issn>0021-8995</issn><issn>1097-4628</issn><issn>1097-4628</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNp1kMtO5DAQRS0EEs1jwReQzWjEIrQfie0sUWt4SAgamsfSqtgO4yGdZGy3oP8eQ4Adi1It6tyj0kXogOBjgjGdwjAcM1pgtoEmBFciLziVm2iSbiSXVVVuo50Q_mFMSIn5BN0s4so4G7K-y-Jf-z5-CW0WItSudXGdQWcyY588GIguUc-us9HplGiyuZnOZ1kHXa_75dAHF23YQ1sNtMHuf-5ddH_65252nl9en13MTi5zzSrGcmaJqXQtOQgjZW0aANFwzEhJBWZQYF6DkVAXWmqhqeGkaGQtqdFaWC5rtot-j97B9_9XNkS1dEHbtoXO9qugKkw4l0XJE3k0ktr3IXjbqMG7Jfi1Ili9t6ZSa-qjtcT--rRC0NA2HjrtwneAMloJJmjipiP34lq7_lmoTubzL3M-JlyI9vU7Af5Z8aQs1ePVmbotZ4_ydiHUQ-IPR76BXsGTT1_cLygmDBNZMVoy9ga9WZRO</recordid><startdate>20101215</startdate><enddate>20101215</enddate><creator>Onbattuvelli, Valmikanathan P</creator><creator>Rochefort, Willie E</creator><creator>Simonsen, John</creator><creator>Park, Seong-Jin</creator><creator>German, Randall M</creator><creator>Atre, Sundar V</creator><general>Wiley Subscription Services, Inc., A Wiley Company</general><general>Wiley</general><scope>FBQ</scope><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20101215</creationdate><title>Studies on the thermal stability and degradation kinetics of Pd/PC nanocomposites</title><author>Onbattuvelli, Valmikanathan P ; Rochefort, Willie E ; Simonsen, John ; Park, Seong-Jin ; German, Randall M ; Atre, Sundar V</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3933-3e1d9cb86a7d88bdfaa7f603152703a406bad8ab4c8c7c2d614f8b82dcc7e68b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>activation energy</topic><topic>Applied sciences</topic><topic>Composites</topic><topic>Degradation</topic><topic>degradation kinetics</topic><topic>Exact sciences and technology</topic><topic>Forms of application and semi-finished materials</topic><topic>Nanocomposites</topic><topic>Nanomaterials</topic><topic>Nanostructure</topic><topic>Palladium</topic><topic>palladium/polycarbonate nanocomposites</topic><topic>Polycarbonates</topic><topic>Polymer industry, paints, wood</topic><topic>Technology of polymers</topic><topic>Thermal degradation</topic><topic>Titanium</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Onbattuvelli, Valmikanathan P</creatorcontrib><creatorcontrib>Rochefort, Willie E</creatorcontrib><creatorcontrib>Simonsen, John</creatorcontrib><creatorcontrib>Park, Seong-Jin</creatorcontrib><creatorcontrib>German, Randall M</creatorcontrib><creatorcontrib>Atre, Sundar V</creatorcontrib><collection>AGRIS</collection><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of applied polymer science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Onbattuvelli, Valmikanathan P</au><au>Rochefort, Willie E</au><au>Simonsen, John</au><au>Park, Seong-Jin</au><au>German, Randall M</au><au>Atre, Sundar V</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Studies on the thermal stability and degradation kinetics of Pd/PC nanocomposites</atitle><jtitle>Journal of applied polymer science</jtitle><addtitle>J. Appl. Polym. Sci</addtitle><date>2010-12-15</date><risdate>2010</risdate><volume>118</volume><issue>6</issue><spage>3602</spage><epage>3611</epage><pages>3602-3611</pages><issn>0021-8995</issn><issn>1097-4628</issn><eissn>1097-4628</eissn><coden>JAPNAB</coden><abstract>Effect of heating rate, Pd content, and synthesis method on the thermal stability of the ex situ and in situ Palladium/polycarbonate (Pd/PC) nanocomposites was investigated. TEM images revealed discrete Pd nanoclusters of about 5 and 15 nm sizes for 1 and 2 vol % ex situ nanocomposites, respectively. However, agglomerated Pd nanoclusters were noticed in the in situ samples, irrespective of the Pd content. The ex situ Pd/PC nanocomposites showed high onset temperature (Ti) for thermal degradation of PC than the in situ and pure PC samples. Pd content and heating rates were found to have a positive influence on the Ti and Tm (temperature at the maximum degradation rate occurs) of the Pd/PC nanocomposites. Thermal degradation of the PC was found to follow the first-order kinetics in the Pd/PC nanocomposites. The activation energies associated with the degradation were determined by using the Kissinger method. These activation energies are used to construct the Master decomposition curve (MDC) and weight-time-temperature (α-t-T) plots that describe the time-temperature dependence of the PC pyrolysis in the Pd/PC nanocomposites. These constructed α-t-T plots were validated with the data from isothermal measurements.</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><doi>10.1002/app.32403</doi><tpages>10</tpages></addata></record> |
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| subjects | activation energy Applied sciences Composites Degradation degradation kinetics Exact sciences and technology Forms of application and semi-finished materials Nanocomposites Nanomaterials Nanostructure Palladium palladium/polycarbonate nanocomposites Polycarbonates Polymer industry, paints, wood Technology of polymers Thermal degradation Titanium |
| title | Studies on the thermal stability and degradation kinetics of Pd/PC nanocomposites |
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