6533b821fe1ef96bd127ace4
RESEARCH PRODUCT
Untersuchungen zum oxidativen abbau nativer cellulose, 4. Stöchiometrische verhältnisse zwischen der anzahl der entstehenden spaltstellen, dem sauerstoff-verbrauch, der CO2-entwicklung und den materialverlusten während des abbaus
A. PalmaS. JovanovićG. V. Schulzsubject
chemistry.chemical_compoundReaction rate constantOxygen atomCellulose degradationchemistryPolymer chemistryCellulosedescription
An investigation of the kinetics of cellulose degradation confirms the scheme proposed by G. V. Schulz and Mertes with the following modifications: the fast pre-stage of the degradation is missing, because there are no faster cleaving bonds in the native cellulose; the first step of the degradation (pre-oxidation) in agreement with the above mentioned authors consists in the uptake of an oxygen atom: in the second step, the scisson proper, the scheme of Staudinger and Roos is replaced by the newer and better founded scheme of Haskins and Hogsed, assuming an alkoxy-elimination; the third step (post-oxidation) finally consists in a limited number of substeps leading to a splitting off of about three glucose units which becomes evident in the losses of material. The values of the rate constants of the three characteristic reactions determined from the steady-state and the non steady-state period of the reaction practically coincide.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1978-02-01 | Die Makromolekulare Chemie |