Abstract
The possibility of removing dispersed and partially dissolved air to a degree of saturation of 0.8 from spinning solutions of polyacrylonitrile in dimethylacetamide by deaeration under a 60 mm Hg vacuum for 1 min at 20-40°C was demonstrated experimentally. A method of determining the dissolved air in spinning solutions based on the dissolution time of a calibrated air bubble in them was proposed.
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Kalacheva, A.V., Medvedev, V.A. & Serkov, A.T. Continuous Deaeration of Spinning Solutions of Polyacrylonitrile in Dimethyl Acetamide. Fibre Chemistry 33, 9–11 (2001). https://doi.org/10.1023/A:1019265211141
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DOI: https://doi.org/10.1023/A:1019265211141