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Determination of primary and secondary xanthate groups in cellulose xanthate

✍ Scribed by Stig Dunbrant; Olof Samuelson

Publisher
John Wiley and Sons
Year
1965
Tongue
English
Weight
571 KB
Volume
9
Category
Article
ISSN
0021-8995

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✦ Synopsis

Various kinetic methods for the determination of primary and secondary xanthate groups have been compared. With certain types of viscoses all methods give an excellent agreement and are superior to the purely chemical methods which are unreliable. The field of application of a kinetic method baaed upon decomposition in a slightly acid buffer is limited due to the appearance of a turbidity upon prolonged dexanthation. A modified technique in which the decomposition is carried out at elevated temperature in sodium hydroxide solution is both rapid and versatile.

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✍ J. R. Griffin; D. R. Coughanowr πŸ“‚ Article πŸ“… 1965 πŸ› American Institute of Chemical Engineers 🌐 English βš– 737 KB

In Part I ( I ) three general methods of solving moving-boundary problems were developed, and in Part II (2) the three methods were applied to the problem of evaporation from a flat surface into a gas of infinite depth. In this final paper, more challenging problems in cylindrical and spherical coor