caa a22 4500 467947317 CHVBK 20180405193738.0 cr unu---uuuuu 170328e20050201xx s 000 0 eng 10.1023/B:CELL.0000049409.56806.da doi (NATIONALLICENCE)springer-10.1023/B:CELL.0000049409.56806.da (NATIONALLICENCE)springer-10.1007/s10570-004-0343-4 Kinetic study on TEMPO-mediated selective oxidation of regenerated cellulose [Elektronische Daten] [Bin Sun, Chunju Gu, Jinhong Ma, Borun Liang] The kinetics of the TEMPO-mediated oxidation of regenerated celluloses has been studied. It is revealed that the oxidation reaction of the regenerated celluloses by the 2,2,6,6-tetramethyl-piperidine-1-oxyl radical (TEMPO)-NaBr-NaOCl system can be approximately described by first-order kinetics with respect to substrate. In the concentration range used the rate constant k is directly proportional to the concentration of TEMPO, while it is proportional to the concentration of NaBr in a relatively lower range and tends to level off at higher concentration. The effect of temperature on the rate constant can be well described by the Arrhenius equation, the apparent activation energy measured is about 66.2kJ/mol. The effect of the pH of the reaction solution, the crystallinity and morphology of the substrates on the oxidation rate is also discussed. Kluwer Academic Publishers, 2005 Crystallinity nationallicence Kinetics nationallicence Oxidation nationallicence Regenerated cellulose nationallicence TEMPO-mediated nationallicence Sun Bin State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Dong Hua University, 200051, Shanghai, P. R. China aut Gu Chunju State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Dong Hua University, 200051, Shanghai, P. R. China aut Ma Jinhong State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Dong Hua University, 200051, Shanghai, P. R. China aut Liang Borun State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Dong Hua University, 200051, Shanghai, P. R. China aut Cellulose Kluwer Academic Publishers 12/1(2005-02-01), 59-66 0969-0239 12:1<59 2005 12 10570 https://doi.org/10.1023/B:CELL.0000049409.56806.da text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/B:CELL.0000049409.56806.da text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sun Bin State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Dong Hua University, 200051, Shanghai, P. R. China aut NATIONALLICENCE 700 1- Gu Chunju State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Dong Hua University, 200051, Shanghai, P. R. China aut NATIONALLICENCE 700 1- Ma Jinhong State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Dong Hua University, 200051, Shanghai, P. R. China aut NATIONALLICENCE 700 1- Liang Borun State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Dong Hua University, 200051, Shanghai, P. R. China aut NATIONALLICENCE 773 0- Cellulose Kluwer Academic Publishers 12/1(2005-02-01), 59-66 0969-0239 12:1<59 2005 12 10570 NATIONALLICENCE 856 40 https://doi.org/10.1007/s10570-004-0343-4 text/html Onlinezugriff via DOI Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE NATIONALLICENCE NL-springer