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Mechanism for the aqueous acid decomposition of the formaldehyde derivative of cellulose xanthate
Author(s) -
Phifer Lyle H.,
Dux James P.,
Ticknor Leland B.,
O'shaughnessy M. Thomas
Publication year - 1965
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1965.070090322
Subject(s) - xanthate , cellulose , chemistry , formaldehyde , hydroxymethyl , decomposition , aqueous solution , inorganic chemistry , equilibrium constant , viscose , polymer chemistry , organic chemistry
Kinetic equations for the decomposition of S ‐hydroxymethyl cellulose xanthate in the presence of acid and formaldehyde are derived. The assumed mechanism involves an equilibrium between the S ‐hydroxymethyl cellulose xanthate and cellulose xanthic acid and xanthate ion. Decomposition appears to proceed via interaction between the cellulose xanthate ion and hydrogen ion which form an activated complex that subsequently decomposes to cellulose and carbon disulfide. The equations derived show the proper dependence on acid and formaldehyde concentrations. An estimate of the equilibrium constant between cellulose xanthate and S ‐hydroxymethyl cellulose xanthate is calculated from the rate constants.