Segmented Block Copolymers with Monodisperse Aramide End-Segments


Arun, Araichimani and Gaymans, Reinoud J. (2008) Segmented Block Copolymers with Monodisperse Aramide End-Segments. Macromolecular Chemistry and Physics, 209 (8). pp. 854-863. ISSN 1022-1352

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Abstract:Segmented block copolymers were synthesized using monodisperse diaramide (TT) as hard segments and PTMO with a molecular weight of 2 900 g · mol-1 as soft segments. The aramide: PTMO segment ratio was increased from 1:1 to 2:1 thereby changing the structure from a high molecular weight multi-block copolymer to a low molecular weight end-block copolymer. The thermal and thermal-mechanical properties were studied by DSC and DMA. Also studied were the tensile and the elastic properties as well as the melt rheological behavior as a function of frequency. The crystallinity of aramide in the end-block copolymers was found to be higher than in the multi-block copolymer.
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Copyright:© 2008 Wiley-VCH Verlag
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Metis ID: 254529