Preparation and Mechanical Properties of Aramid Fibres from Block Copolymers

  • B. Helgee
  • C.-H. Andersson


Aramid block copolymers containing stiff and flexible segments have been synthesized, spun into fibres and subjected to tensile testing. Both the Young’s modulus and the tensile strength of the fibres decreases with increasing length of the flexible segment while the elongation at break increases. As spun fibres show a well defined yield point. Heat treatment of the fibres up to 500 °C results in a 2–3 times increase in Young’s modulus while the elongation at break decreases. The fibre containing the longest flexible blocks becomes very brittle upon heat treatment at 500 °C.


Block Copolymer Aramid Fibre Flexible Segment Terephthaloyl Chloride Polymer Data 
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Copyright information

© Elsevier Science Publishers Ltd 1990

Authors and Affiliations

  • B. Helgee
    • 1
  • C.-H. Andersson
    • 2
  1. 1.Dept of Polymer TechnologyChalmers University of TechnologyGöteborgSweden
  2. 2.Swedish Institute for Textile ResearchGöteborgSweden

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