This paper is devoted to the rheological properties of cationic cellulosic
fibres with different degrees of substitution and swelling. Depending on th
e concentration of the fibre suspension, the system behaves as a solution (
C < 5 g/l) or as a gel. The rheological characteristics of the suspensions
are directly related to the degree of substitution, the degree of swelling
and the degree of fibrillation of the material. (C) 1999 Elsevier Science L
td. All rights reserved.