Characterization of polyethylenes by x-ray diffraction and 13C-NMR: Temperature studies and the nature of the amorphous halo
X‐ray diffraction patterns of linear and branched polyethylenes typically show two sharp reflections and an amorphous halo. The position of the halo depends on branch content and temperature. A single curve describes the position of the halo maximum (2θhalo) for a range of liquid hydrocarbons and po...
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| Veröffentlicht in: | Journal of polymer science. Part B, Polymer physics Polymer physics, 1993-02, Vol.31 (2), p.175-183 |
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| container_end_page | 183 |
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| container_issue | 2 |
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| container_title | Journal of polymer science. Part B, Polymer physics |
| container_volume | 31 |
| creator | Mcfaddin, D. C. Russell, K. E. Wu, Gang Heyding, R. D. |
| description | X‐ray diffraction patterns of linear and branched polyethylenes typically show two sharp reflections and an amorphous halo. The position of the halo depends on branch content and temperature. A single curve describes the position of the halo maximum (2θhalo) for a range of liquid hydrocarbons and polyethylenes in the 20–140°C range. At temperatures well below their melting point, branched polymers give 2θhalo values which differ significantly from those observed for the liquid Linear polymers show a greater divergence, indicating that some of the material giving rise to the halo is much better packed than in the liquid.Parallel 13 C NMR spin‐lattice relaxation studies suggest that this relatively ordered material has a trans conformation but a low average T1c value. © 1993 John Wiley & Sons, Inc. |
| doi_str_mv | 10.1002/polb.1993.090310206 |
| format | Article |
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At temperatures well below their melting point, branched polymers give 2θhalo values which differ significantly from those observed for the liquid Linear polymers show a greater divergence, indicating that some of the material giving rise to the halo is much better packed than in the liquid.Parallel 13 C NMR spin‐lattice relaxation studies suggest that this relatively ordered material has a trans conformation but a low average T1c value. © 1993 John Wiley & Sons, Inc.</description><identifier>ISSN: 0887-6266</identifier><identifier>EISSN: 1099-0488</identifier><identifier>DOI: 10.1002/polb.1993.090310206</identifier><identifier>CODEN: JPLPAY</identifier><language>eng</language><publisher>New York: John Wiley & Sons, Inc</publisher><subject>Applied sciences ; Exact sciences and technology ; linear and branched ; nuclear magnetic resonance (NMR) study of linear and branched polyethlenes ; Organic polymers ; Physicochemistry of polymers ; polyethylene ; polyethylene, linear and branched, X‐ray diffraction and 13 C‐NMR characterization of ; Properties and characterization ; Structure, morphology and analysis ; X-ray diffraction and 13 C-NMR characterization of ; x-ray diffraction of linear and branched polyethylenes</subject><ispartof>Journal of polymer science. 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E.</creatorcontrib><creatorcontrib>Wu, Gang</creatorcontrib><creatorcontrib>Heyding, R. D.</creatorcontrib><title>Characterization of polyethylenes by x-ray diffraction and 13C-NMR: Temperature studies and the nature of the amorphous halo</title><title>Journal of polymer science. Part B, Polymer physics</title><addtitle>J. Polym. Sci. B Polym. Phys</addtitle><description>X‐ray diffraction patterns of linear and branched polyethylenes typically show two sharp reflections and an amorphous halo. The position of the halo depends on branch content and temperature. A single curve describes the position of the halo maximum (2θhalo) for a range of liquid hydrocarbons and polyethylenes in the 20–140°C range. At temperatures well below their melting point, branched polymers give 2θhalo values which differ significantly from those observed for the liquid Linear polymers show a greater divergence, indicating that some of the material giving rise to the halo is much better packed than in the liquid.Parallel 13 C NMR spin‐lattice relaxation studies suggest that this relatively ordered material has a trans conformation but a low average T1c value. © 1993 John Wiley & Sons, Inc.</description><subject>Applied sciences</subject><subject>Exact sciences and technology</subject><subject>linear and branched</subject><subject>nuclear magnetic resonance (NMR) study of linear and branched polyethlenes</subject><subject>Organic polymers</subject><subject>Physicochemistry of polymers</subject><subject>polyethylene</subject><subject>polyethylene, linear and branched, X‐ray diffraction and 13 C‐NMR characterization of</subject><subject>Properties and characterization</subject><subject>Structure, morphology and analysis</subject><subject>X-ray diffraction and 13 C-NMR characterization of</subject><subject>x-ray diffraction of linear and branched polyethylenes</subject><issn>0887-6266</issn><issn>1099-0488</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1993</creationdate><recordtype>article</recordtype><recordid>eNo9kMFO4zAQhi3ESlu6PMFefOCa7jiuHZsDEkRsQSp0taoEN8uxHcWQJpGdCoJ4eBIV9TSamW8-aX6EfhNYEID0T9fWxYJISRcggRJIgZ-gGQEpE1gKcYpmIESW8JTzn-gsxheAccfkDH3mlQ7a9C74D937tsFtiUfd4PpqqF3jIi4G_J4EPWDry3JiJ0o3FhOaJ48P_y_x1u06F3S_Dw7Hfm_9eDUBfeVwcxiP1qnTuzZ0VbuPuNJ1-wv9KHUd3fl3naPt39ttfpesN6v7_HqdeCIET7gW3Cyd5cykjJeFoJlNmTVifBgKk9kSMssKsgRuWGENSMJlSi0RtnS8pHN0cdB2Ohpdjz80xkfVBb_TYVBLRhijZMSuDtibr91wXBNQU8ZqylhNGatjxurfZn1z7EZBchD42Lv3o0CHV8UzmjH19LhSOYVn_iRXitMv9yCEIQ</recordid><startdate>199302</startdate><enddate>199302</enddate><creator>Mcfaddin, D. 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D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i1886-6a86c4ed65c256fb837d25dc89930bc7df07d5b1406c5bdc0916923d18dfe6f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1993</creationdate><topic>Applied sciences</topic><topic>Exact sciences and technology</topic><topic>linear and branched</topic><topic>nuclear magnetic resonance (NMR) study of linear and branched polyethlenes</topic><topic>Organic polymers</topic><topic>Physicochemistry of polymers</topic><topic>polyethylene</topic><topic>polyethylene, linear and branched, X‐ray diffraction and 13 C‐NMR characterization of</topic><topic>Properties and characterization</topic><topic>Structure, morphology and analysis</topic><topic>X-ray diffraction and 13 C-NMR characterization of</topic><topic>x-ray diffraction of linear and branched polyethylenes</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mcfaddin, D. C.</creatorcontrib><creatorcontrib>Russell, K. E.</creatorcontrib><creatorcontrib>Wu, Gang</creatorcontrib><creatorcontrib>Heyding, R. D.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><jtitle>Journal of polymer science. Part B, Polymer physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mcfaddin, D. C.</au><au>Russell, K. E.</au><au>Wu, Gang</au><au>Heyding, R. D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Characterization of polyethylenes by x-ray diffraction and 13C-NMR: Temperature studies and the nature of the amorphous halo</atitle><jtitle>Journal of polymer science. Part B, Polymer physics</jtitle><addtitle>J. Polym. Sci. B Polym. Phys</addtitle><date>1993-02</date><risdate>1993</risdate><volume>31</volume><issue>2</issue><spage>175</spage><epage>183</epage><pages>175-183</pages><issn>0887-6266</issn><eissn>1099-0488</eissn><coden>JPLPAY</coden><abstract>X‐ray diffraction patterns of linear and branched polyethylenes typically show two sharp reflections and an amorphous halo. The position of the halo depends on branch content and temperature. A single curve describes the position of the halo maximum (2θhalo) for a range of liquid hydrocarbons and polyethylenes in the 20–140°C range. At temperatures well below their melting point, branched polymers give 2θhalo values which differ significantly from those observed for the liquid Linear polymers show a greater divergence, indicating that some of the material giving rise to the halo is much better packed than in the liquid.Parallel 13 C NMR spin‐lattice relaxation studies suggest that this relatively ordered material has a trans conformation but a low average T1c value. © 1993 John Wiley & Sons, Inc.</abstract><cop>New York</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1002/polb.1993.090310206</doi><tpages>9</tpages></addata></record> |
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| ispartof | Journal of polymer science. Part B, Polymer physics, 1993-02, Vol.31 (2), p.175-183 |
| issn | 0887-6266 1099-0488 |
| language | eng |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Applied sciences Exact sciences and technology linear and branched nuclear magnetic resonance (NMR) study of linear and branched polyethlenes Organic polymers Physicochemistry of polymers polyethylene polyethylene, linear and branched, X‐ray diffraction and 13 C‐NMR characterization of Properties and characterization Structure, morphology and analysis X-ray diffraction and 13 C-NMR characterization of x-ray diffraction of linear and branched polyethylenes |
| title | Characterization of polyethylenes by x-ray diffraction and 13C-NMR: Temperature studies and the nature of the amorphous halo |
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