Aging Effects on the Phase Composition and Chain Mobility of Isotactic Poly(propylene)
Changes in phase composition and chain mobility in injection‐molded isotactic poly(propylene), crystallized from the melt with slow cooling rate and subsequently quenched, associated with aging at temperature well above Tg for 150 and 1 000 h, are studied using time‐domain 1H solid‐state NMR and XRD...
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| Veröffentlicht in: | Macromolecular materials and engineering 2008-10, Vol.293 (10), p.847-857 |
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| container_title | Macromolecular materials and engineering |
| container_volume | 293 |
| creator | Hedesiu, Cristian Demco, Dan E. Kleppinger, Ralf Poel, Geert Vanden Remerie, Klaas Litvinov, Victor M. Blümich, Bernhard Steenbakkers, Rieky |
| description | Changes in phase composition and chain mobility in injection‐molded isotactic poly(propylene), crystallized from the melt with slow cooling rate and subsequently quenched, associated with aging at temperature well above Tg for 150 and 1 000 h, are studied using time‐domain 1H solid‐state NMR and XRD. All sample exhibit physical aging when exposed to elevated temperatures, and the physical aging kinetics was observed to depend on the morphology of the homopolymer iPP and aging temperatures. The significant increase in the tensile modulus in time was observed for injection‐molded iPP. The observed property changes induced by aging are attributed to microstructural changes within the semi‐rigid and amorphous fractions. |
| doi_str_mv | 10.1002/mame.200800140 |
| format | Article |
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All sample exhibit physical aging when exposed to elevated temperatures, and the physical aging kinetics was observed to depend on the morphology of the homopolymer iPP and aging temperatures. The significant increase in the tensile modulus in time was observed for injection‐molded iPP. 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Mater. Eng</addtitle><description>Changes in phase composition and chain mobility in injection‐molded isotactic poly(propylene), crystallized from the melt with slow cooling rate and subsequently quenched, associated with aging at temperature well above Tg for 150 and 1 000 h, are studied using time‐domain 1H solid‐state NMR and XRD. All sample exhibit physical aging when exposed to elevated temperatures, and the physical aging kinetics was observed to depend on the morphology of the homopolymer iPP and aging temperatures. The significant increase in the tensile modulus in time was observed for injection‐molded iPP. The observed property changes induced by aging are attributed to microstructural changes within the semi‐rigid and amorphous fractions.</description><subject>aging</subject><subject>Applied sciences</subject><subject>Exact sciences and technology</subject><subject>isotactic poly(propylene) (PP)</subject><subject>Organic polymers</subject><subject>Physicochemistry of polymers</subject><subject>Properties and characterization</subject><subject>proton NMR transverse relaxation</subject><subject>SAXS</subject><subject>Structure, morphology and analysis</subject><issn>1438-7492</issn><issn>1439-2054</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNqFkM1P4zAQxSO0SLDAlbMvrJZDumM7ie1jVRUW1PIh8XG0pu6EGpK4xEFs_nvCFlV7W81hRqPfe096SXLMYcQBxK8aaxoJAA3AM9hJ9nkmTSogz779vXWqMiP2ku8xPg-I0kbuJw_jJ988sWlZkusiCw3rVsRuVhiJTUK9DtF3fvhis2STFfqGzcPCV77rWSjZRQwdus47dhOq_ue6Deu-ooZOD5PdEqtIR1_7ILk_m95Nfqez6_OLyXiWOqk1pLQgNUyBpDkhlVxyzFGXoDNlEAogWoApRAFimQlhjCG9dJxcVvBFJp08SH5sfIfo1zeKna19dFRV2FB4i1bmUnGh8gEcbUDXhhhbKu269TW2veVgP-uzn_XZbX2D4OTLGaPDqmyxcT5uVQIUN1yagTMb7t1X1P_H1c7H8-m_GelG62NHf7ZabF9soaTK7ePVuZUg9GWez-yt_ADEq4-a</recordid><startdate>20081010</startdate><enddate>20081010</enddate><creator>Hedesiu, Cristian</creator><creator>Demco, Dan E.</creator><creator>Kleppinger, Ralf</creator><creator>Poel, Geert Vanden</creator><creator>Remerie, Klaas</creator><creator>Litvinov, Victor M.</creator><creator>Blümich, Bernhard</creator><creator>Steenbakkers, Rieky</creator><general>WILEY-VCH Verlag</general><general>WILEY‐VCH Verlag</general><general>Wiley-VCH</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20081010</creationdate><title>Aging Effects on the Phase Composition and Chain Mobility of Isotactic Poly(propylene)</title><author>Hedesiu, Cristian ; Demco, Dan E. ; Kleppinger, Ralf ; Poel, Geert Vanden ; Remerie, Klaas ; Litvinov, Victor M. ; Blümich, Bernhard ; Steenbakkers, Rieky</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3880-ebe7e7e6ae81eaef131a5a8f08479a060eeb0962602d422999e8dc1ec461b43c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>aging</topic><topic>Applied sciences</topic><topic>Exact sciences and technology</topic><topic>isotactic poly(propylene) (PP)</topic><topic>Organic polymers</topic><topic>Physicochemistry of polymers</topic><topic>Properties and characterization</topic><topic>proton NMR transverse relaxation</topic><topic>SAXS</topic><topic>Structure, morphology and analysis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hedesiu, Cristian</creatorcontrib><creatorcontrib>Demco, Dan E.</creatorcontrib><creatorcontrib>Kleppinger, Ralf</creatorcontrib><creatorcontrib>Poel, Geert Vanden</creatorcontrib><creatorcontrib>Remerie, Klaas</creatorcontrib><creatorcontrib>Litvinov, Victor M.</creatorcontrib><creatorcontrib>Blümich, Bernhard</creatorcontrib><creatorcontrib>Steenbakkers, Rieky</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Macromolecular materials and engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hedesiu, Cristian</au><au>Demco, Dan E.</au><au>Kleppinger, Ralf</au><au>Poel, Geert Vanden</au><au>Remerie, Klaas</au><au>Litvinov, Victor M.</au><au>Blümich, Bernhard</au><au>Steenbakkers, Rieky</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Aging Effects on the Phase Composition and Chain Mobility of Isotactic Poly(propylene)</atitle><jtitle>Macromolecular materials and engineering</jtitle><addtitle>Macromol. Mater. Eng</addtitle><date>2008-10-10</date><risdate>2008</risdate><volume>293</volume><issue>10</issue><spage>847</spage><epage>857</epage><pages>847-857</pages><issn>1438-7492</issn><eissn>1439-2054</eissn><abstract>Changes in phase composition and chain mobility in injection‐molded isotactic poly(propylene), crystallized from the melt with slow cooling rate and subsequently quenched, associated with aging at temperature well above Tg for 150 and 1 000 h, are studied using time‐domain 1H solid‐state NMR and XRD. All sample exhibit physical aging when exposed to elevated temperatures, and the physical aging kinetics was observed to depend on the morphology of the homopolymer iPP and aging temperatures. The significant increase in the tensile modulus in time was observed for injection‐molded iPP. The observed property changes induced by aging are attributed to microstructural changes within the semi‐rigid and amorphous fractions.</abstract><cop>Weinheim</cop><pub>WILEY-VCH Verlag</pub><doi>10.1002/mame.200800140</doi><tpages>11</tpages></addata></record> |
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| subjects | aging Applied sciences Exact sciences and technology isotactic poly(propylene) (PP) Organic polymers Physicochemistry of polymers Properties and characterization proton NMR transverse relaxation SAXS Structure, morphology and analysis |
| title | Aging Effects on the Phase Composition and Chain Mobility of Isotactic Poly(propylene) |
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