FUNCTIONALIZATION OF CHITOSAN; CHITOSAN-CELLULOSE BLENDS

The dissolution of chitosan in ionic liquids was successfully accomplished. Benzoylation and phthalation of chitosan in homogeneous conditions was also achieved.By modifying the chitosan with different reagents, new desired chemical and physical properties can be induced which will enlarge the field of the potential applications. Blends of chitosan and cellulose were successfully prepared using BMIMAc as a common solvent.The rheological measurements of the polymeric solutions indicated the formation of a complex between chitosan and cellulose molecules. Films prepared from the polymeric solutions were investigated by means of FT-IR, TGA, X-ray diffraction and SEM measurements. The interest in obtaining films from blends of chitosan and cellulose is owed to skin tissue regeneration and accelerate healing of wounds effect created by the presence of chitosan that has distinctive biomedical properties when used as wound-dressing materials.

Autorentext

Cristina Stefanescu was born in 1980 in Roman, Romania, to theproud parents of Mr. and Mrs. Gheorghe Martinas. In December 2010she received the degree of Doctor of Philosophy in chemistry atLouisiana State University under Dr. W. H. Daly and Dr. I. I. Negulescu.

Klappentext

The dissolution of chitosan in ionic liquids wassuccessfully accomplished. Benzoylation andphthalation of chitosan in homogeneous conditions wasalso achieved.By modifying the chitosan withdifferent reagents, new desired chemical and physicalproperties can be induced which will enlarge thefield of the potential applications. Blends of chitosan and cellulose were successfullyprepared using BMIMAc as a common solvent.Therheological measurements of the polymeric solutionsindicated the formation of a complex between chitosanand cellulose molecules. Films prepared from thepolymeric solutions were investigated by means ofFT-IR, TGA, X-ray diffraction and SEM measurements.The interest in obtaining films from blends ofchitosan and cellulose is owed to skin tissueregeneration and accelerate healing of wounds effectcreated by the presence of chitosan that hasdistinctive biomedical properties when used aswound-dressing materials.