The Preparation and Properties of Fibres of the Copolymer of Acrylonitrile with Diketene (Poluchenie i Svoictva Volokon iz Sopolimera Akrilonitrila s Diketenom),
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1970
- Accession Number
- AD0714222
Entities
People
- G. A. Gabrielyan
- G. I. Stanchenko
- Z. A. Rogovin
Organizations
- Royal Aircraft Establishment