Accession Number : AD0714222

Title :   The Preparation and Properties of Fibres of the Copolymer of Acrylonitrile with Diketene (Poluchenie i Svoictva Volokon iz Sopolimera Akrilonitrila s Diketenom),

Corporate Author : ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND)

Personal Author(s) : Gabrielyan,G. A. ; Stanchenko,G. I. ; Rogovin,Z. A.

Report Date : APR 1970

Pagination or Media Count : 15

Abstract : Polyacrylonitrile fibres with 4-6% of diketene as a comonomer were spun from dimethyl formamide with a breaking length of 23-27 km (i.e. a tenacity of 2.6-3.0 gm/denier) and an elongation of 7-8%. Because of the presence of beta-lactone rings in the comonomer, various types of reactive groups such as -OH, -CONH, -NH2, and -CONHOH were able to be introduced into these fibres by reactions with hexamethylene diamine (HMDA) or hydroxylamine (HA). The treatment with HMDA was found to give fibres that could be dyed with acid or active dyes and with improved thermal stability due to cross-linking. The treatment with HA also gave fibre that could be dyed with acid dyes and a further treatment with an aqueous solution containing Fe(3+) increased the thermal stability of the fibres due to the formation of intermolecular chemical bonds. (Author)

Descriptors :   (*ACRYLONITRILE POLYMERS, *SYNTHETIC FIBERS), CHEMICAL REACTIONS, COPOLYMERIZATION, THERMAL STABILITY, DYES, CROSSLINKING(CHEMISTRY), AMINES, NITRILES, OXYGEN HETEROCYCLIC COMPOUNDS, USSR

Subject Categories : Polymer Chemistry
      Textiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE