Research output: Contribution to journal › Article › peer-review
Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Thermodynamics of mixing of chitosan with water
AU - Tyukova, I. S.
AU - Suvorova, A. I.
AU - Petrova, A. P.
AU - Vikhoreva, G. A.
PY - 2003
Y1 - 2003
N2 - Sorption and diffusion of water vapors in films of chitosan acetates of varying molecular mass were studied using a McBain microbalance. Based on sorption isotherms, the Gibbs energies of mixing of polymers with water were calculated. It was found that these parameters increase with increasing molecular mass of the chitosan. The state of water in chitosan films was analyzed in terms of various sorption and dissolution models: multimolecular adsorption (the BET theory), the Zimm-Lundberg cluster model, the Flory-Higgins lattice model, and the De Boer-Zwicker model. It was demonstrated that, over a wide range of vapor activities, water sorbs on the active groups of the polymer and does not yield clusters. The coefficient of water diffusion in chitosan films grows as the concentration of water in the system increases.
AB - Sorption and diffusion of water vapors in films of chitosan acetates of varying molecular mass were studied using a McBain microbalance. Based on sorption isotherms, the Gibbs energies of mixing of polymers with water were calculated. It was found that these parameters increase with increasing molecular mass of the chitosan. The state of water in chitosan films was analyzed in terms of various sorption and dissolution models: multimolecular adsorption (the BET theory), the Zimm-Lundberg cluster model, the Flory-Higgins lattice model, and the De Boer-Zwicker model. It was demonstrated that, over a wide range of vapor activities, water sorbs on the active groups of the polymer and does not yield clusters. The coefficient of water diffusion in chitosan films grows as the concentration of water in the system increases.
UR - https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=tsmetrics&SrcApp=tsm_test&DestApp=WOS_CPL&DestLinkType=FullRecord&KeyUT=000183687500012
UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=0038449283
M3 - Article
VL - 45
SP - 475
EP - 479
JO - Polymer Science - Series A
JF - Polymer Science - Series A
SN - 0965-545X
IS - 5
ER -
ID: 44417527