Rheological and molecular characterization of long-chain branched poly(ethylene terephthalate)
Reactive extrusion with pyromellitic dianhydride (PMDA) and tetraglycidyl diamino diphenyl methane (TGDDM) was conducted to create long-chain branched poly(ethylene terephthalate) (LCB-PET). The mechanical and molecular properties were analyzed by linear and non-linear viscoelastic rheology in the m...
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| Veröffentlicht in: | Rheologica acta 2017-11, Vol.56 (11), p.887-904 |
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| creator | Kruse, Matthias Wagner, Manfred H. |
| description | Reactive extrusion with pyromellitic dianhydride (PMDA) and tetraglycidyl diamino diphenyl methane (TGDDM) was conducted to create long-chain branched poly(ethylene terephthalate) (LCB-PET). The mechanical and molecular properties were analyzed by linear and non-linear viscoelastic rheology in the melt state and by size-exclusion chromatography measurements with triple detection. The two tetra-functional chain extenders lead to strong viscosity increases, increasing strain hardening effects, and increasing LCB with increasing chain extender concentration. Molecular stress function model predictions show good agreement with the elongational data measured and allowed a quantification of the strain hardening. Analysis of SEC triple detection data shows a strong increase of the average molar mass, polydispersity, radius of gyration, and hydrodynamic radius with increasing chain extender concentration. Branching was confirmed by a decreasing Mark-Houwink exponent, and the analysis of the contraction of the molecule revealed either star-like, comb-like, random tree-like or hyperbranched structures depending on concentration and type of chain extender. |
| doi_str_mv | 10.1007/s00397-017-1043-y |
| format | Article |
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The mechanical and molecular properties were analyzed by linear and non-linear viscoelastic rheology in the melt state and by size-exclusion chromatography measurements with triple detection. The two tetra-functional chain extenders lead to strong viscosity increases, increasing strain hardening effects, and increasing LCB with increasing chain extender concentration. Molecular stress function model predictions show good agreement with the elongational data measured and allowed a quantification of the strain hardening. Analysis of SEC triple detection data shows a strong increase of the average molar mass, polydispersity, radius of gyration, and hydrodynamic radius with increasing chain extender concentration. Branching was confirmed by a decreasing Mark-Houwink exponent, and the analysis of the contraction of the molecule revealed either star-like, comb-like, random tree-like or hyperbranched structures depending on concentration and type of chain extender.</description><identifier>ISSN: 0035-4511</identifier><identifier>EISSN: 1435-1528</identifier><identifier>DOI: 10.1007/s00397-017-1043-y</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Chain branching ; Characterization and Evaluation of Materials ; Chemistry and Materials Science ; Complex Fluids and Microfluidics ; Dianhydrides ; Diphenyl methane ; Ethylene ; Extrusion ; Food Science ; Materials Science ; Mechanical Engineering ; Molecular chains ; Original Contribution ; Polydispersity ; Polyethylene terephthalate ; Polymer Sciences ; Rheological properties ; Rheology ; Size exclusion chromatography ; Soft and Granular Matter ; Strain analysis ; Strain hardening ; Stress concentration ; Stress functions ; Viscoelasticity</subject><ispartof>Rheologica acta, 2017-11, Vol.56 (11), p.887-904</ispartof><rights>Springer-Verlag GmbH Germany 2017</rights><rights>Rheologica Acta is a copyright of Springer, (2017). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c353t-3bfd75138592121d756fc52e0d1920327186ecb95b3d2e6a04eca8eb058c2c863</citedby><cites>FETCH-LOGICAL-c353t-3bfd75138592121d756fc52e0d1920327186ecb95b3d2e6a04eca8eb058c2c863</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00397-017-1043-y$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00397-017-1043-y$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Kruse, Matthias</creatorcontrib><creatorcontrib>Wagner, Manfred H.</creatorcontrib><title>Rheological and molecular characterization of long-chain branched poly(ethylene terephthalate)</title><title>Rheologica acta</title><addtitle>Rheol Acta</addtitle><description>Reactive extrusion with pyromellitic dianhydride (PMDA) and tetraglycidyl diamino diphenyl methane (TGDDM) was conducted to create long-chain branched poly(ethylene terephthalate) (LCB-PET). The mechanical and molecular properties were analyzed by linear and non-linear viscoelastic rheology in the melt state and by size-exclusion chromatography measurements with triple detection. The two tetra-functional chain extenders lead to strong viscosity increases, increasing strain hardening effects, and increasing LCB with increasing chain extender concentration. Molecular stress function model predictions show good agreement with the elongational data measured and allowed a quantification of the strain hardening. Analysis of SEC triple detection data shows a strong increase of the average molar mass, polydispersity, radius of gyration, and hydrodynamic radius with increasing chain extender concentration. Branching was confirmed by a decreasing Mark-Houwink exponent, and the analysis of the contraction of the molecule revealed either star-like, comb-like, random tree-like or hyperbranched structures depending on concentration and type of chain extender.</description><subject>Chain branching</subject><subject>Characterization and Evaluation of Materials</subject><subject>Chemistry and Materials Science</subject><subject>Complex Fluids and Microfluidics</subject><subject>Dianhydrides</subject><subject>Diphenyl methane</subject><subject>Ethylene</subject><subject>Extrusion</subject><subject>Food Science</subject><subject>Materials Science</subject><subject>Mechanical Engineering</subject><subject>Molecular chains</subject><subject>Original Contribution</subject><subject>Polydispersity</subject><subject>Polyethylene terephthalate</subject><subject>Polymer Sciences</subject><subject>Rheological properties</subject><subject>Rheology</subject><subject>Size exclusion chromatography</subject><subject>Soft and Granular Matter</subject><subject>Strain analysis</subject><subject>Strain hardening</subject><subject>Stress concentration</subject><subject>Stress functions</subject><subject>Viscoelasticity</subject><issn>0035-4511</issn><issn>1435-1528</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp1kMtKxDAUhoMoOI4-gLuAG11Ec2l6WcrgDQYE0a0hTU-nHTJJTTqL-vRmqODK1Tlwvv8_8CF0yegto7S4i5SKqiCUFYTRTJDpCC1YJiRhkpfHaJHOkmSSsVN0FuOWJjAv-AJ9vnXgrd_0RlusXYN33oLZWx2w6XTQZoTQf-ux9w77FlvvNiQdeofroJ3poMGDt9M1jN1kwQFOPAzd2GmrR7g5RyetthEufucSfTw-vK-eyfr16WV1vyZGSDESUbdNIZkoZcUZZ2nPWyM50IZVnApesDIHU1eyFg2HXNMMjC6hprI03JS5WKKruXcI_msPcVRbvw8uvVSc56yqKpnql4jNlAk-xgCtGkK_02FSjKqDRjVrVMmOOmhUU8rwORMT6zYQ_pr_D_0ANuZ2kA</recordid><startdate>20171101</startdate><enddate>20171101</enddate><creator>Kruse, Matthias</creator><creator>Wagner, Manfred H.</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>L6V</scope><scope>M7S</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope></search><sort><creationdate>20171101</creationdate><title>Rheological and molecular characterization of long-chain branched poly(ethylene terephthalate)</title><author>Kruse, Matthias ; Wagner, Manfred H.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c353t-3bfd75138592121d756fc52e0d1920327186ecb95b3d2e6a04eca8eb058c2c863</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Chain branching</topic><topic>Characterization and Evaluation of Materials</topic><topic>Chemistry and Materials Science</topic><topic>Complex Fluids and Microfluidics</topic><topic>Dianhydrides</topic><topic>Diphenyl methane</topic><topic>Ethylene</topic><topic>Extrusion</topic><topic>Food Science</topic><topic>Materials Science</topic><topic>Mechanical Engineering</topic><topic>Molecular chains</topic><topic>Original Contribution</topic><topic>Polydispersity</topic><topic>Polyethylene terephthalate</topic><topic>Polymer Sciences</topic><topic>Rheological properties</topic><topic>Rheology</topic><topic>Size exclusion chromatography</topic><topic>Soft and Granular Matter</topic><topic>Strain analysis</topic><topic>Strain hardening</topic><topic>Stress concentration</topic><topic>Stress functions</topic><topic>Viscoelasticity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kruse, Matthias</creatorcontrib><creatorcontrib>Wagner, Manfred H.</creatorcontrib><collection>CrossRef</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>Materials Science Database</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><jtitle>Rheologica acta</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kruse, Matthias</au><au>Wagner, Manfred H.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Rheological and molecular characterization of long-chain branched poly(ethylene terephthalate)</atitle><jtitle>Rheologica acta</jtitle><stitle>Rheol Acta</stitle><date>2017-11-01</date><risdate>2017</risdate><volume>56</volume><issue>11</issue><spage>887</spage><epage>904</epage><pages>887-904</pages><issn>0035-4511</issn><eissn>1435-1528</eissn><abstract>Reactive extrusion with pyromellitic dianhydride (PMDA) and tetraglycidyl diamino diphenyl methane (TGDDM) was conducted to create long-chain branched poly(ethylene terephthalate) (LCB-PET). The mechanical and molecular properties were analyzed by linear and non-linear viscoelastic rheology in the melt state and by size-exclusion chromatography measurements with triple detection. The two tetra-functional chain extenders lead to strong viscosity increases, increasing strain hardening effects, and increasing LCB with increasing chain extender concentration. Molecular stress function model predictions show good agreement with the elongational data measured and allowed a quantification of the strain hardening. Analysis of SEC triple detection data shows a strong increase of the average molar mass, polydispersity, radius of gyration, and hydrodynamic radius with increasing chain extender concentration. Branching was confirmed by a decreasing Mark-Houwink exponent, and the analysis of the contraction of the molecule revealed either star-like, comb-like, random tree-like or hyperbranched structures depending on concentration and type of chain extender.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1007/s00397-017-1043-y</doi><tpages>18</tpages></addata></record> |
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| subjects | Chain branching Characterization and Evaluation of Materials Chemistry and Materials Science Complex Fluids and Microfluidics Dianhydrides Diphenyl methane Ethylene Extrusion Food Science Materials Science Mechanical Engineering Molecular chains Original Contribution Polydispersity Polyethylene terephthalate Polymer Sciences Rheological properties Rheology Size exclusion chromatography Soft and Granular Matter Strain analysis Strain hardening Stress concentration Stress functions Viscoelasticity |
| title | Rheological and molecular characterization of long-chain branched poly(ethylene terephthalate) |
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