Characterization of polydimethylsiloxane-block-polystyrene (PDMS-b-PS) copolymers by liquid chromatography at critical conditions

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dc.contributor.authorMalik M.I.
dc.contributor.authorSinha P.
dc.contributor.authorBayley G.M.
dc.contributor.authorMallon P.E.
dc.contributor.authorPasch H.
dc.date.accessioned2011-10-13T16:58:27Z
dc.date.available2011-10-13T16:58:27Z
dc.date.issued2011
dc.description.abstractIn this study, liquid chromatography at critical conditions (LCCC) is used to determine the block lengths and molar masses of polydimethylsiloxane-block- polystyrene copolymers synthesized via atom transfer radical polymerization (ATRP) techniques. In addition, the analysis allows for the determination of the presence of homopolymers in the samples. LCCC at the critical point of polydimethylsiloxane (PDMS) on a reversed phase column allows for the determination of PDMS homopolymer and the length of the polystyrene (PS) block in the block copolymer which elutes in the size exclusion chromatography (SEC) regime under these conditions. The PDMS block length and PS homopolymer can be obtained under normal phase conditions. The results of LCCC are compared with data from conventional SEC.(Figure Presented) © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
dc.description.versionArticle
dc.identifier.citationMacromolecular Chemistry and Physics
dc.identifier.citation212
dc.identifier.citation12
dc.identifier.citationhttp://www.scopus.com/inward/record.url?eid=2-s2.0-79958214886&partnerID=40&md5=3a0e50caea8295208d5cd8b6975271f2
dc.identifier.issn10221352
dc.identifier.other10.1002/macp.201000711
dc.identifier.urihttp://hdl.handle.net/10019.1/16732
dc.subjectblock copolymers
dc.subjectcritical adsorption point
dc.subjectliquid chromatography at critical conditions
dc.subjectpolydimethylsiloxane
dc.subjectpolystyrene
dc.subjectAtom transfer radical polymerization techniques
dc.subjectBlock lengths
dc.subjectCritical adsorption point
dc.subjectCritical points
dc.subjectLiquid chromatography at critical conditions
dc.subjectNormal phase
dc.subjectPolydimethylsiloxane PDMS
dc.subjectPolystyrene copolymer
dc.subjectReversed-phase columns
dc.subjectAdsorption
dc.subjectAtom transfer radical polymerization
dc.subjectBlock copolymers
dc.subjectColumn chromatography
dc.subjectCopolymerization
dc.subjectFree radical reactions
dc.subjectGel permeation chromatography
dc.subjectHomopolymerization
dc.subjectLiquids
dc.subjectMicrochannels
dc.subjectPlastic products
dc.subjectPolystyrenes
dc.subjectSilicones
dc.subjectSize exclusion chromatography
dc.titleCharacterization of polydimethylsiloxane-block-polystyrene (PDMS-b-PS) copolymers by liquid chromatography at critical conditions
dc.typeArticle
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