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Segmented Block Copolymers with Monodisperse Aramide End-Segments

✍ Scribed by Araichimani Arun; Reinoud J. Gaymans

Book ID
102484726
Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
238 KB
Volume
209
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Segmented block copolymers were synthesized using monodisperse diaramide (TΦT) 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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