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Ethylene copolymers with crystallizable side chains

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dc.title Ethylene copolymers with crystallizable side chains en
dc.contributor.author Janíček, Miroslav
dc.contributor.author Čermák, Roman
dc.contributor.author Obadal, Martin
dc.contributor.author Piel, Christian
dc.contributor.author Ponížil, Petr
dc.relation.ispartof Macromolecules
dc.identifier.issn 0024-9297 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2011
utb.relation.volume 44
utb.relation.issue 17
dc.citation.spage 6759
dc.citation.epage 6766
dc.type article
dc.language.iso en
dc.publisher American Chemical Society (ACS) en
dc.identifier.doi 10.1021/ma201017m
dc.relation.uri http://pubs.acs.org/doi/pdf/10.1021/ma201017m
dc.subject Amorphous layer en
dc.subject Co-monomer en
dc.subject Comonomer content en
dc.subject Comonomers en
dc.subject Critical concentration en
dc.subject Ethylene copolymer en
dc.subject Lattice dimensions en
dc.description.abstract Metallocene-catalyzed copolymers of ethylene and α-olefins were investigated by X-ray scattering and differential scanning calorimetry. Evaluated α-olefin comonomers consisted of 8, 12, 18, or 26 carbons. As indicated from the small-angle X-ray scattering, ethylene-hexacosene copolymer with comonomer content of 3 mol % may contain second crystallites. Because no other reflections were observed in the wide-angle X-ray scattering patterns, the side-chain crystallites should have the same crystal lattice dimensions as the prevailing main-chain crystallites. Since this potential side chains crystallization can only be found in the ethylene-hexacosene copolymer with 3 mol % of comonomer, a critical concentration of long-chain comonomer should be reached for this secondary crystallite formation. It was also found that the thickness of the interlamellar amorphous layer stays virtually constant regardless of the changes in comonomer content and side-chain length. © 2011 American Chemical Society. en
utb.faculty Faculty of Technology
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1002649
utb.identifier.rivid RIV/70883521:28110/11:43865609!RIV12-MSM-28110___
utb.identifier.rivid RIV/70883521:28610/11:43865609!RIV12-MSM-28610___
utb.identifier.obdid 43865623
utb.identifier.scopus 2-s2.0-80052464327
utb.identifier.wok 000294585600018
utb.identifier.coden MAMOB
utb.source j-scopus
dc.date.accessioned 2012-02-10T13:15:23Z
dc.date.available 2012-02-10T13:15:23Z
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Janíček, Miroslav
utb.contributor.internalauthor Čermák, Roman
utb.contributor.internalauthor Ponížil, Petr
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