In situ fibrillation of isotactic polypropylene in ethylene‐vinyl acetate: Toward enhanced rheological and mechanical properties
ABSTRACT In situ microfibrillar reinforced composites with ethylene‐vinyl acetate (EVA) as matrix and isotactic polypropylene (iPP) as dispersed fibrils were successfully fabricated by multistage stretching extrusion with an assembly of laminating‐multiplying elements (LMEs). Four types of EVA with...
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| Veröffentlicht in: | Journal of applied polymer science 2019-06, Vol.136 (21), p.n/a |
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| creator | Luo, Shanshan Sun, Jing Huang, Anrong Zhang, Tingting Wei, Liangqiang Qin, Shuhao |
| description | ABSTRACT
In situ microfibrillar reinforced composites with ethylene‐vinyl acetate (EVA) as matrix and isotactic polypropylene (iPP) as dispersed fibrils were successfully fabricated by multistage stretching extrusion with an assembly of laminating‐multiplying elements (LMEs). Four types of EVA with different apparent viscosity were utilized to study the influence of viscosity ratio on the morphology and mechanical properties of EVA/iPP in situ microfibrillar blends. The scanning electron micrographs revealed that the dividing–multiplying processes in LMEs could effectively transform the morphology of iPP phase into microfibrils and the morphology of iPP microfibrils strongly depended on the viscosity ratio. Higher viscosity ratio was favorable for formation of finer microfibrils with narrower diameter distribution. The morphology development of iPP with different viscosity ratio greatly affected the rheological and mechanical properties of EVA/iPP blends. The dynamic rheological results shown that the iPP microfibrils were helpful to increase the storage modulus and loss modulus. The tensile test indicated that the mechanical properties of EVA/iPP blends were controlled by the morphology of iPP phase and the polarity of EVA matrix. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47557. |
| doi_str_mv | 10.1002/app.47557 |
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In situ microfibrillar reinforced composites with ethylene‐vinyl acetate (EVA) as matrix and isotactic polypropylene (iPP) as dispersed fibrils were successfully fabricated by multistage stretching extrusion with an assembly of laminating‐multiplying elements (LMEs). Four types of EVA with different apparent viscosity were utilized to study the influence of viscosity ratio on the morphology and mechanical properties of EVA/iPP in situ microfibrillar blends. The scanning electron micrographs revealed that the dividing–multiplying processes in LMEs could effectively transform the morphology of iPP phase into microfibrils and the morphology of iPP microfibrils strongly depended on the viscosity ratio. Higher viscosity ratio was favorable for formation of finer microfibrils with narrower diameter distribution. The morphology development of iPP with different viscosity ratio greatly affected the rheological and mechanical properties of EVA/iPP blends. The dynamic rheological results shown that the iPP microfibrils were helpful to increase the storage modulus and loss modulus. The tensile test indicated that the mechanical properties of EVA/iPP blends were controlled by the morphology of iPP phase and the polarity of EVA matrix. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47557.</description><identifier>ISSN: 0021-8995</identifier><identifier>EISSN: 1097-4628</identifier><identifier>DOI: 10.1002/app.47557</identifier><language>eng</language><publisher>Hoboken, USA: John Wiley & Sons, Inc</publisher><subject>Electron micrographs ; Ethylene vinyl acetates ; ethylene‐vinyl acetate (EVA) ; Extrusion ; Fibrillation ; in situ fibrillation ; Isotacticity ; Laminating ; Loss modulus ; Materials science ; Mechanical properties ; Mixtures ; Morphology ; Particulate composites ; Polarity ; Polymer matrix composites ; Polymers ; Polypropylene ; Rheological properties ; Rheology ; Storage modulus ; Tensile tests ; Viscosity ; Viscosity ratio</subject><ispartof>Journal of applied polymer science, 2019-06, Vol.136 (21), p.n/a</ispartof><rights>2019 Wiley Periodicals, Inc.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2977-328809f7058321a52e4a77fd2b955f0c4f65ae74140630d307131bd7205c6f6f3</citedby><cites>FETCH-LOGICAL-c2977-328809f7058321a52e4a77fd2b955f0c4f65ae74140630d307131bd7205c6f6f3</cites><orcidid>0000-0002-0253-4220</orcidid></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.47557$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fapp.47557$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,778,782,1414,27907,27908,45557,45558</link.rule.ids></links><search><creatorcontrib>Luo, Shanshan</creatorcontrib><creatorcontrib>Sun, Jing</creatorcontrib><creatorcontrib>Huang, Anrong</creatorcontrib><creatorcontrib>Zhang, Tingting</creatorcontrib><creatorcontrib>Wei, Liangqiang</creatorcontrib><creatorcontrib>Qin, Shuhao</creatorcontrib><title>In situ fibrillation of isotactic polypropylene in ethylene‐vinyl acetate: Toward enhanced rheological and mechanical properties</title><title>Journal of applied polymer science</title><description>ABSTRACT
In situ microfibrillar reinforced composites with ethylene‐vinyl acetate (EVA) as matrix and isotactic polypropylene (iPP) as dispersed fibrils were successfully fabricated by multistage stretching extrusion with an assembly of laminating‐multiplying elements (LMEs). Four types of EVA with different apparent viscosity were utilized to study the influence of viscosity ratio on the morphology and mechanical properties of EVA/iPP in situ microfibrillar blends. The scanning electron micrographs revealed that the dividing–multiplying processes in LMEs could effectively transform the morphology of iPP phase into microfibrils and the morphology of iPP microfibrils strongly depended on the viscosity ratio. Higher viscosity ratio was favorable for formation of finer microfibrils with narrower diameter distribution. The morphology development of iPP with different viscosity ratio greatly affected the rheological and mechanical properties of EVA/iPP blends. The dynamic rheological results shown that the iPP microfibrils were helpful to increase the storage modulus and loss modulus. The tensile test indicated that the mechanical properties of EVA/iPP blends were controlled by the morphology of iPP phase and the polarity of EVA matrix. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47557.</description><subject>Electron micrographs</subject><subject>Ethylene vinyl acetates</subject><subject>ethylene‐vinyl acetate (EVA)</subject><subject>Extrusion</subject><subject>Fibrillation</subject><subject>in situ fibrillation</subject><subject>Isotacticity</subject><subject>Laminating</subject><subject>Loss modulus</subject><subject>Materials science</subject><subject>Mechanical properties</subject><subject>Mixtures</subject><subject>Morphology</subject><subject>Particulate composites</subject><subject>Polarity</subject><subject>Polymer matrix composites</subject><subject>Polymers</subject><subject>Polypropylene</subject><subject>Rheological properties</subject><subject>Rheology</subject><subject>Storage modulus</subject><subject>Tensile tests</subject><subject>Viscosity</subject><subject>Viscosity ratio</subject><issn>0021-8995</issn><issn>1097-4628</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp1kE1OwzAQhS0EEuVnwQ0ssWKRMnbiOGGHKn4qIcEC1pHrjKlRsIPtUmWHOAFn5CSEli2rmdH75j3pEXLCYMoA-Lnq-2khhZA7ZMKglllR8mqXTEaNZVVdi31yEOMLAGMCygn5nDsabVpRYxfBdp1K1jvqDbXRJ6WT1bT33dAH3w8dOqTWUUzLzf798fVu3dBRpTGphBf00a9VaCm6pXIaWxqW6Dv_bLUaIdfSV9Sjsjl_HTEki_GI7BnVRTz-m4fk6frqcXab3d3fzGeXd5nmtZRZzqsKaiNBVDlnSnAslJSm5YtaCAO6MKVQKAtWQJlDm4NkOVu0koPQpSlNfkhOt75j9NsKY2pe_Cq4MbLhrCoYcChgpM62lA4-xoCm6YN9VWFoGDS_FTdjxc2m4pE937Jr2-HwP9hcPjxsP34AIbuAEw</recordid><startdate>20190605</startdate><enddate>20190605</enddate><creator>Luo, Shanshan</creator><creator>Sun, Jing</creator><creator>Huang, Anrong</creator><creator>Zhang, Tingting</creator><creator>Wei, Liangqiang</creator><creator>Qin, Shuhao</creator><general>John Wiley & Sons, Inc</general><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0002-0253-4220</orcidid></search><sort><creationdate>20190605</creationdate><title>In situ fibrillation of isotactic polypropylene in ethylene‐vinyl acetate: Toward enhanced rheological and mechanical properties</title><author>Luo, Shanshan ; Sun, Jing ; Huang, Anrong ; Zhang, Tingting ; Wei, Liangqiang ; Qin, Shuhao</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2977-328809f7058321a52e4a77fd2b955f0c4f65ae74140630d307131bd7205c6f6f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Electron micrographs</topic><topic>Ethylene vinyl acetates</topic><topic>ethylene‐vinyl acetate (EVA)</topic><topic>Extrusion</topic><topic>Fibrillation</topic><topic>in situ fibrillation</topic><topic>Isotacticity</topic><topic>Laminating</topic><topic>Loss modulus</topic><topic>Materials science</topic><topic>Mechanical properties</topic><topic>Mixtures</topic><topic>Morphology</topic><topic>Particulate composites</topic><topic>Polarity</topic><topic>Polymer matrix composites</topic><topic>Polymers</topic><topic>Polypropylene</topic><topic>Rheological properties</topic><topic>Rheology</topic><topic>Storage modulus</topic><topic>Tensile tests</topic><topic>Viscosity</topic><topic>Viscosity ratio</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Luo, Shanshan</creatorcontrib><creatorcontrib>Sun, Jing</creatorcontrib><creatorcontrib>Huang, Anrong</creatorcontrib><creatorcontrib>Zhang, Tingting</creatorcontrib><creatorcontrib>Wei, Liangqiang</creatorcontrib><creatorcontrib>Qin, Shuhao</creatorcontrib><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>Luo, Shanshan</au><au>Sun, Jing</au><au>Huang, Anrong</au><au>Zhang, Tingting</au><au>Wei, Liangqiang</au><au>Qin, Shuhao</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>In situ fibrillation of isotactic polypropylene in ethylene‐vinyl acetate: Toward enhanced rheological and mechanical properties</atitle><jtitle>Journal of applied polymer science</jtitle><date>2019-06-05</date><risdate>2019</risdate><volume>136</volume><issue>21</issue><epage>n/a</epage><issn>0021-8995</issn><eissn>1097-4628</eissn><abstract>ABSTRACT
In situ microfibrillar reinforced composites with ethylene‐vinyl acetate (EVA) as matrix and isotactic polypropylene (iPP) as dispersed fibrils were successfully fabricated by multistage stretching extrusion with an assembly of laminating‐multiplying elements (LMEs). Four types of EVA with different apparent viscosity were utilized to study the influence of viscosity ratio on the morphology and mechanical properties of EVA/iPP in situ microfibrillar blends. The scanning electron micrographs revealed that the dividing–multiplying processes in LMEs could effectively transform the morphology of iPP phase into microfibrils and the morphology of iPP microfibrils strongly depended on the viscosity ratio. Higher viscosity ratio was favorable for formation of finer microfibrils with narrower diameter distribution. The morphology development of iPP with different viscosity ratio greatly affected the rheological and mechanical properties of EVA/iPP blends. The dynamic rheological results shown that the iPP microfibrils were helpful to increase the storage modulus and loss modulus. The tensile test indicated that the mechanical properties of EVA/iPP blends were controlled by the morphology of iPP phase and the polarity of EVA matrix. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47557.</abstract><cop>Hoboken, USA</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1002/app.47557</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0002-0253-4220</orcidid></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Electron micrographs Ethylene vinyl acetates ethylene‐vinyl acetate (EVA) Extrusion Fibrillation in situ fibrillation Isotacticity Laminating Loss modulus Materials science Mechanical properties Mixtures Morphology Particulate composites Polarity Polymer matrix composites Polymers Polypropylene Rheological properties Rheology Storage modulus Tensile tests Viscosity Viscosity ratio |
| title | In situ fibrillation of isotactic polypropylene in ethylene‐vinyl acetate: Toward enhanced rheological and mechanical properties |
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