Complexes of Cellulose with Cyclic Amines and Diamines

Abstract

Several aromatic amines and one heterocyclic amine were applied to cotton cellulose in an attempt to form hydrogen bonded complexes. The complexes formed with aniline, benzylamine, and furfurylamine were relatively unstable, but that formed with p-phenylenediamine was relatively stable. All samples required pretreatment with ethylamine to form the product. The complexes were characterized by x-ray diffraction techniques in which the distension of the 101 planes was compared to that of the aliphatic amine-cellulose complexes. Similarity was noted between d(101) of cyclic amine- celluloses and of aliphatic amine-celluloses when computed molecular lengths of the amines were similar. A 1:1 ratio of amine to anhydroglucose units in the furfurylamine-cellulose was indicated by thermogravimetric analysis. The p phenyl enediamine-cellulose decomposed between 150 and 300°C and had a 1:2 ratio of diamine to AHG units.