|
Title
Cellulose modification by crosslinking with siloxane diacids
Authors
G. Stiubianu Carmen Racles Alexandra Nistor Maria Cazacu and B. C. Simionescu
Received
November 9, 2011
Published
Volume 45 Issue 3-4 March-April
Keywords
cellulose acetate, siloxane, crosslinking, polycondensation
Abstract
New crosslinked siloxane-cellulose polyester materials were synthesized by direct solution polycondensation, at room temperature, starting from cellulose acetate and two siloxane diacids. Dicyclohexylcarbodiimide (DCC) was used as activator and 4-(N,N-dimethylamino)pyridinium-p- toluenesulfonate (DPTS) as catalyst. IR spectroscopy was used for the characterization of polyesters. The obtained compounds were insoluble in common organic solvents, due to crosslinking. The morphology of the obtained materials was observed by SEM, while surface composition was determined by EDX analysis. The water vapor sorption-desorption behavior of the crosslinked materials was studied by dynamic vapor sorption (DVS) analysis, and the results were compared with those of the starting cellulose acetate.
Link
|
