caa a22 4500 46580795X CHVBK 20180323112108.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00943893 doi (NATIONALLICENCE)springer-10.1007/BF00943893 Influence of temperature on acid properties of cellulose complexite containing hydroxamic acid and amidoxime groups in water-methanol mixtures [Elektronische Daten] [L. Miroshnik, A. Aleksandrov, V. Tolmachev] The dependence on temperature (298-328°K) of the acid dissociation constants pK0 in aqueous-methanolic mixtures and in methanol of a fibrous complexite based on cellulose containing hydroxamic acid and amidoxime groups was studied. The changes in the free energy, enthalpy, and entropy of the dissociation process for the two groups were determined. The influence of the electrostatic, conformational, and solvational effects on the pK0 of dissociation of the groups in the polymer was established. The entropy term provides the main contribution to the change in the free energy of dissociation. The thermodynamic characteristics obtained indicate that the acid properties of the complexite groups, which depend on the composition of the solvent and temperature, are determined mainly by the nature of its functional groups. Plenum Publishing Corporation, 1990 Miroshnik L. Khar'kov Institute, USSR aut Aleksandrov A. Khar'kov Institute, USSR aut Tolmachev V. Khar'kov Institute, USSR aut Theoretical and Experimental Chemistry Kluwer Academic Publishers-Plenum Publishers 26/1(1990-01-01), 111-115 0040-5760 26:1<111 1990 26 11237 https://doi.org/10.1007/BF00943893 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00943893 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Miroshnik L. Khar'kov Institute, USSR aut NATIONALLICENCE 700 1- Aleksandrov A. Khar'kov Institute, USSR aut NATIONALLICENCE 700 1- Tolmachev V. Khar'kov Institute, USSR aut NATIONALLICENCE 773 0- Theoretical and Experimental Chemistry Kluwer Academic Publishers-Plenum Publishers 26/1(1990-01-01), 111-115 0040-5760 26:1<111 1990 26 11237 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer