caa a22 4500 465788114 CHVBK 20180323112015.0 cr unu---uuuuu 170327e19900301xx s 000 0 eng 10.1007/BF01032446 doi (NATIONALLICENCE)springer-10.1007/BF01032446 Study of the stoichiometric polyelectrolyte complex between chitosan and carboxymethyl cellulose [Elektronische Daten] [W. Argüelles-Monal, M. Gárciga, C. Peniche-Covas] Summary: The polyelectrolyte complex (PEC) between chitosan and carboxymethyl cellulose was studied. Turbidimetric measurements revealed that the amount of stoichiometric PEC increased gradually as the solution of one polyelectrolyte was added to the other; the turbidity of the solution reached a maximum for the stoichiometric ratio of the reacting polyelectrolytes in the mixture. At pH 4,0 the composition of the complex is very near to equimolarity. IR spectra and thermal analysis of the PEC exhibited significant differences from those of the 1:1 mixture of the starting polyelectrolytes. Springer-Verlag, 1990 Argüelles-Monal W. IMRE, University of Havana, 10400, Cuba aut Gárciga M. Pharmaceutical Enterprise, Havana, Cuba aut Peniche-Covas C. Faculty of Chemistry, University of Havana, 10400, Cuba aut Polymer Bulletin Springer-Verlag 23/3(1990-03-01), 307-313 0170-0839 23:3<307 1990 23 289 https://doi.org/10.1007/BF01032446 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01032446 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Argüelles-Monal W. IMRE, University of Havana, 10400, Cuba aut NATIONALLICENCE 700 1- Gárciga M. Pharmaceutical Enterprise, Havana, Cuba aut NATIONALLICENCE 700 1- Peniche-Covas C. Faculty of Chemistry, University of Havana, 10400, Cuba aut NATIONALLICENCE 773 0- Polymer Bulletin Springer-Verlag 23/3(1990-03-01), 307-313 0170-0839 23:3<307 1990 23 289 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer