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- W2087682791 abstract "Treatment of cotton cellulose with sodium hydroxide solutions of varying concentration over extended periods in the absence of oxygen markedly decreases the intrinsic viscosity of both the cellulose in cuoxam and its cellulose trinitrate derivative (CTN) in acetone. Light-scattering measurements show that the molecular weight does not change while the radius of gyration decreases and the second virial coefficient increases. The narrow molecular weight distribution of the native cotton is still maintained. Mild oxidation first causes the intrinsic viscosity to increase. At more prolonged oxidation times the viscosity decreases. These results are interpreted by an intramolecular cross-linking reaction in the folded cellulose chains with the formation of chemically resistent bonds. Cleavage of the resultant cyclic structures leads to molecules with a larger radius of gyration but the same molecular weight." @default.
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- W2087682791 date "2007-03-08" @default.
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- W2087682791 title "The initial stages of the heterogeneous degradation of alkali cellulose by oxygen in relation to the morphology of native cotton cellulose" @default.
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- W2087682791 doi "https://doi.org/10.1002/polc.5070420352" @default.
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