Studies on Acrylonitrile-Hydrozyalkyl-Methacrylate Copolymer Fibers
1980; SAGE Publishing; Volume: 50; Issue: 4 Linguagem: Inglês
10.1177/004051758005000403
ISSN1746-7748
AutoresP. Bajaj, Amartya Sengupta, Preeti Jain,
Tópico(s)Epoxy Resin Curing Processes
ResumoThe effect cf wet spinning conditions on the properties of acrylonitrile-2-hydroxyethyl methacrylate (AN-HEMA) and acrylonitrile-2-hydroxypropyl methacrylate (AN-HPMA) copolymer fibers were studied. Copolymers containing 1 to 4.8 mole% hydroxyalkylmethacrylate comonomer were synthesized by slurry polymerization using redox initiator. The spinning dope used was a 15% solution of polymer in dimethylformamide. The spinning conditions studied were: extrusion pressure, coagulating bath temperature, take-up velocity, and draw ratio. Low coagulating bath temperature and high draw ratio gave fiber with better strength properties. Sonic modulus and x-ray diffraction were used for study ing the molecular orientation and crystalline organization. The influence of hydrophilic comonomers in polyacrylonitrile on moisture sorption, dyeability, and tensile properties was considered.
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