Atmospheric oxygen and thiocarbonates as factors in the ripening of viscose

Viscose rayon: recent developments and future prospects

“…Investigations of viscose ripening have been reported in Khim. Volokna (37). Atmospheric oxygen had no significant effect on the rate of change of cellulose xanthate DS (7) but it did decrease the amount of polythio compounds in viscose (38). Sodium sulfide had no appreciable effect on viscose ripening while sodium sulfite significantly retarded the physicochemical reactions (39).…”