Polylactide/exfoliated graphite nanocomposites with enhanced thermal stability, mechanical modulus, and electrical conductivity
We have prepared a series of polylactide/exfoliated graphite (PLA/EG) nanocomposites by melt-compounding and investigated their morphology, structures, thermal stability, mechanical, and electrical properties. For PLA/EG nanocomposites, EG was prepared by the acid treatment and following rapid therm...
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| Veröffentlicht in: | Journal of polymer science. Part B, Polymer physics Polymer physics, 2010-04, Vol.48 (8), p.850-858 |
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| container_title | Journal of polymer science. Part B, Polymer physics |
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| creator | Kim, Il-Hwan Jeong, Young Gyu |
| description | We have prepared a series of polylactide/exfoliated graphite (PLA/EG) nanocomposites by melt-compounding and investigated their morphology, structures, thermal stability, mechanical, and electrical properties. For PLA/EG nanocomposites, EG was prepared by the acid treatment and following rapid thermal expansion of micron-sized crystalline natural graphite (NG), and it was characterized to be composed of disordered graphite nanoplatelets. It was revealed that graphite nanoplatelets of PLA/EG nanocomposites were dispersed homogeneously in the PLA matrix without forming the crystalline aggregates, unlike PLA/NG composites. Thermal degradation temperatures of PLA/EG nanocomposites increased substantially with the increment of EG content up to ~3 wt %, whereas those of PLA/NG composites remained constant regardless of the NG content. For instance, thermal degradation temperature of PLA/EG nanocomposite with only 0.5 wt % EG was improved by ~10 K over PLA homopolymer. Young's moduli of PLA/EG nanocomposites increased noticeably with the increment of EG content up to ~3 wt %, compared with PLA/NG composites. The percolation threshold for electrical conduction of PLA/EG nanocomposites was found to be at 3-5 wt % EG, which is far lower graphite content than that (10-15 wt % NG) of PLA/NG composites. |
| doi_str_mv | 10.1002/polb.21956 |
| format | Article |
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For PLA/EG nanocomposites, EG was prepared by the acid treatment and following rapid thermal expansion of micron-sized crystalline natural graphite (NG), and it was characterized to be composed of disordered graphite nanoplatelets. It was revealed that graphite nanoplatelets of PLA/EG nanocomposites were dispersed homogeneously in the PLA matrix without forming the crystalline aggregates, unlike PLA/NG composites. Thermal degradation temperatures of PLA/EG nanocomposites increased substantially with the increment of EG content up to ~3 wt %, whereas those of PLA/NG composites remained constant regardless of the NG content. For instance, thermal degradation temperature of PLA/EG nanocomposite with only 0.5 wt % EG was improved by ~10 K over PLA homopolymer. Young's moduli of PLA/EG nanocomposites increased noticeably with the increment of EG content up to ~3 wt %, compared with PLA/NG composites. The percolation threshold for electrical conduction of PLA/EG nanocomposites was found to be at 3-5 wt % EG, which is far lower graphite content than that (10-15 wt % NG) of PLA/NG composites.</description><identifier>ISSN: 0887-6266</identifier><identifier>ISSN: 1099-0488</identifier><identifier>EISSN: 1099-0488</identifier><identifier>DOI: 10.1002/polb.21956</identifier><identifier>CODEN: JPLPAY</identifier><language>eng</language><publisher>Hoboken: Wiley Subscription Services, Inc., A Wiley Company</publisher><subject>Applied sciences ; Composites ; electrical properties ; Exact sciences and technology ; exfoliated graphites ; Exfoliation ; Forms of application and semi-finished materials ; Graphite ; mechanical properties ; Nanocomposites ; Nanomaterials ; nanoparticles ; Nanostructure ; Polylactides ; Polymer industry, paints, wood ; structure-property relations ; Technology of polymers ; Thermal degradation ; thermal properties ; Thermal stability</subject><ispartof>Journal of polymer science. Part B, Polymer physics, 2010-04, Vol.48 (8), p.850-858</ispartof><rights>Copyright © 2010 Wiley Periodicals, Inc.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4346-abd2e3a30c499c73c46f461c7cc0fbe143eeb88893168b12463488271ebe34e13</citedby><cites>FETCH-LOGICAL-c4346-abd2e3a30c499c73c46f461c7cc0fbe143eeb88893168b12463488271ebe34e13</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%2Fpolb.21956$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fpolb.21956$$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=22524557$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Kim, Il-Hwan</creatorcontrib><creatorcontrib>Jeong, Young Gyu</creatorcontrib><title>Polylactide/exfoliated graphite nanocomposites with enhanced thermal stability, mechanical modulus, and electrical conductivity</title><title>Journal of polymer science. Part B, Polymer physics</title><addtitle>J. Polym. Sci. B Polym. Phys</addtitle><description>We have prepared a series of polylactide/exfoliated graphite (PLA/EG) nanocomposites by melt-compounding and investigated their morphology, structures, thermal stability, mechanical, and electrical properties. For PLA/EG nanocomposites, EG was prepared by the acid treatment and following rapid thermal expansion of micron-sized crystalline natural graphite (NG), and it was characterized to be composed of disordered graphite nanoplatelets. It was revealed that graphite nanoplatelets of PLA/EG nanocomposites were dispersed homogeneously in the PLA matrix without forming the crystalline aggregates, unlike PLA/NG composites. Thermal degradation temperatures of PLA/EG nanocomposites increased substantially with the increment of EG content up to ~3 wt %, whereas those of PLA/NG composites remained constant regardless of the NG content. For instance, thermal degradation temperature of PLA/EG nanocomposite with only 0.5 wt % EG was improved by ~10 K over PLA homopolymer. Young's moduli of PLA/EG nanocomposites increased noticeably with the increment of EG content up to ~3 wt %, compared with PLA/NG composites. The percolation threshold for electrical conduction of PLA/EG nanocomposites was found to be at 3-5 wt % EG, which is far lower graphite content than that (10-15 wt % NG) of PLA/NG composites.</description><subject>Applied sciences</subject><subject>Composites</subject><subject>electrical properties</subject><subject>Exact sciences and technology</subject><subject>exfoliated graphites</subject><subject>Exfoliation</subject><subject>Forms of application and semi-finished materials</subject><subject>Graphite</subject><subject>mechanical properties</subject><subject>Nanocomposites</subject><subject>Nanomaterials</subject><subject>nanoparticles</subject><subject>Nanostructure</subject><subject>Polylactides</subject><subject>Polymer industry, paints, wood</subject><subject>structure-property relations</subject><subject>Technology of polymers</subject><subject>Thermal degradation</subject><subject>thermal properties</subject><subject>Thermal stability</subject><issn>0887-6266</issn><issn>1099-0488</issn><issn>1099-0488</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNp9kE9v1DAQxSMEEkvhwhcgF4SEmtb_4thHuqIFadUWQQU3y3EmXYMTB9uh3VO_Ot6m9MjJ8szvvZl5RfEaoyOMEDmevGuPCJY1f1KsMJKyQkyIp8UKCdFUnHD-vHgR40-Ecq-Wq-Lu0rud0ybZDo7htvfO6gRdeR30tLUJylGP3vhh8jH_Ynlj07aEcatHk6m0hTBoV8akW-ts2h2WA5jctCZXB9_Nbo6HpR67EhyYFO7rxo_dnCf-yYKXxbNeuwivHt6D4ur047f1p2pzcfZ5_WFTGUYZr3TbEaCaIsOkNA01jPeMY9MYg_oWMKMArRBCUsxFiwnjNN9NGgwtUAaYHhTvFt8p-N8zxKQGGw04p0fwc1QSYc4RakQm3y-kCT7GAL2agh102CmM1D5ktQ9Z3Yec4bcPtjrm0_qQc7HxUUFITVhdN5nDC3djHez-46guLzYn_7yrRWNjgttHjQ6_FG9oU6vv52fqh6y_iHO0VvsZbxa-117p65D3uPpKEKYICyyQJPQvCfOnmg</recordid><startdate>20100415</startdate><enddate>20100415</enddate><creator>Kim, Il-Hwan</creator><creator>Jeong, Young Gyu</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>7U5</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20100415</creationdate><title>Polylactide/exfoliated graphite nanocomposites with enhanced thermal stability, mechanical modulus, and electrical conductivity</title><author>Kim, Il-Hwan ; Jeong, Young Gyu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4346-abd2e3a30c499c73c46f461c7cc0fbe143eeb88893168b12463488271ebe34e13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Applied sciences</topic><topic>Composites</topic><topic>electrical properties</topic><topic>Exact sciences and technology</topic><topic>exfoliated graphites</topic><topic>Exfoliation</topic><topic>Forms of application and semi-finished materials</topic><topic>Graphite</topic><topic>mechanical properties</topic><topic>Nanocomposites</topic><topic>Nanomaterials</topic><topic>nanoparticles</topic><topic>Nanostructure</topic><topic>Polylactides</topic><topic>Polymer industry, paints, wood</topic><topic>structure-property relations</topic><topic>Technology of polymers</topic><topic>Thermal degradation</topic><topic>thermal properties</topic><topic>Thermal stability</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kim, Il-Hwan</creatorcontrib><creatorcontrib>Jeong, Young Gyu</creatorcontrib><collection>AGRIS</collection><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of polymer science. Part B, Polymer physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kim, Il-Hwan</au><au>Jeong, Young Gyu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Polylactide/exfoliated graphite nanocomposites with enhanced thermal stability, mechanical modulus, and electrical conductivity</atitle><jtitle>Journal of polymer science. Part B, Polymer physics</jtitle><addtitle>J. Polym. Sci. B Polym. Phys</addtitle><date>2010-04-15</date><risdate>2010</risdate><volume>48</volume><issue>8</issue><spage>850</spage><epage>858</epage><pages>850-858</pages><issn>0887-6266</issn><issn>1099-0488</issn><eissn>1099-0488</eissn><coden>JPLPAY</coden><abstract>We have prepared a series of polylactide/exfoliated graphite (PLA/EG) nanocomposites by melt-compounding and investigated their morphology, structures, thermal stability, mechanical, and electrical properties. For PLA/EG nanocomposites, EG was prepared by the acid treatment and following rapid thermal expansion of micron-sized crystalline natural graphite (NG), and it was characterized to be composed of disordered graphite nanoplatelets. It was revealed that graphite nanoplatelets of PLA/EG nanocomposites were dispersed homogeneously in the PLA matrix without forming the crystalline aggregates, unlike PLA/NG composites. Thermal degradation temperatures of PLA/EG nanocomposites increased substantially with the increment of EG content up to ~3 wt %, whereas those of PLA/NG composites remained constant regardless of the NG content. For instance, thermal degradation temperature of PLA/EG nanocomposite with only 0.5 wt % EG was improved by ~10 K over PLA homopolymer. Young's moduli of PLA/EG nanocomposites increased noticeably with the increment of EG content up to ~3 wt %, compared with PLA/NG composites. The percolation threshold for electrical conduction of PLA/EG nanocomposites was found to be at 3-5 wt % EG, which is far lower graphite content than that (10-15 wt % NG) of PLA/NG composites.</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><doi>10.1002/polb.21956</doi><tpages>9</tpages></addata></record> |
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| subjects | Applied sciences Composites electrical properties Exact sciences and technology exfoliated graphites Exfoliation Forms of application and semi-finished materials Graphite mechanical properties Nanocomposites Nanomaterials nanoparticles Nanostructure Polylactides Polymer industry, paints, wood structure-property relations Technology of polymers Thermal degradation thermal properties Thermal stability |
| title | Polylactide/exfoliated graphite nanocomposites with enhanced thermal stability, mechanical modulus, and electrical conductivity |
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