title: Dynamics in the process of formation of anisotropic chitosan hydrogel.
abstract: To control the dynamics of dialysis-induced anisotropic gel formation, we have derived a theoretical expression for the development of the gel layer for a simple case where no cross-link sites for cross-linking agents exists and the inflow and the outflow of low molecular weight components through the dialysis membrane modify the state of polymer molecules to meet the gelation condition. A series of experiments using chitosan solution were done as a model case. The experimental results were compared with asymptotic expressions of the time development equation predicted by theory, and the compatibility of the theoretical picture was examined.
authors.affiliation: Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Kiryu, Gunma 376-8515, Japan. yamamoto@phys.sci.gunma-u.ac.jp
authors.forename: Takao
authors.initials: T
authors.lastname: Yamamoto
authors.forename: Naoko
authors.initials: N
authors.lastname: Tomita
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Maki
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Dobashi
mesh_terms: D019342:Acetic Acid / Q000737:chemistry; D016880:Anisotropy; D048271:Chitosan / Q000737:chemistry*; D020100:Hydrogels / Q000737:chemistry*; D012972:Sodium Hydroxide / Q000737:chemistry
chemical_list: D020100:Hydrogels; D012972:Sodium Hydroxide; D048271:Chitosan; D019342:Acetic Acid