Characterization of Polymer Architectures by Multidetection Size Exclusion Chromatography |
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Authors: | Judit E Puskas Elizabeth A Foreman Lucas M Dos Santos Serap Hayat Soyta? |
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Institution: | Department of Polymer Science, The University of Akron, 170 University Av. Akron, OH 44325-3909, USA |
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Abstract: | Summary: This paper discusses the analysis of star-branched and dendritic polyisobutylenes (PIBs) using branching parameters based on radii of gyration Rg,z and hydrodynamic radii Rh,z. Rg,z and Rh,z were measured by Size Exclusion Chromatography equipped with a Wyatt Technology Viscostar viscometer (VIS), a Wyatt Optilab DSP RI detector, a Wyatt DAWN EOS 18 angle Multiangle Light Scattering (MALS) detector and a Wyatt Quasi-elastic Light Scattering QELS detector. Branching parameters were calculated from these measurements and compared with those computed for these architectures. |
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Keywords: | arborescent dendritic living carbocationic polyisobutylene multidetector SEC polymerization star-branched |
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