Accession Number : AD0751973

Title :   Fiber Forming Thioacrylamide Polymers from Polyacrylonitriles. Part I. Polymer Conversion.

Descriptive Note : Technical rept. Apr 68-Jan 71,

Corporate Author : AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Picklesimer,L. G.

Report Date : MAR 1972

Pagination or Media Count : 36

Abstract : The cyano moiety of polyacrylonitrile homopolymer and copolymer has been converted to thioamide by the addition of gaseous hydrogen sulfide to solutions of the polymers. In one case, 69% of the cyano moiety was converted to the thioamide. The carbonates of sodium, lithium, and potassium were found to catalyze the addition of hydrogen sulfide by the cyano moiety. The polymer solvent was also found to influence the addition of hydrogen sulfide. In the case of dimethyl sulfoxide, the hydrogen sulfide was reduced without addition unless a catalyst was used. (Author-PL)

Descriptors :   (*ACRYLONITRILE POLYMERS, *SULFURATION), AMIDES, ORGANIC SULFUR COMPOUNDS, CATALYSTS, CARBONATES, SYNTHESIS(CHEMISTRY), THERMAL STABILITY, INFRARED SPECTRA, COPOLYMERIZATION, DIFFERENTIAL THERMAL ANALYSIS, SOLUBILITY

Subject Categories : Polymer Chemistry
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE