A study of cellulose-chitosan blends obtained under shear strain

The blends of naturally occurring poly(saccharides), cellulose and chitosan , obtained in a solid phase under the combined action of high pressure and shear strain using various equipment were studied by electron microscopy, F T-IR spectroscopy, fractionation, potentiometric titration, X-ray diffracti on, and elemental analysis. It was shown that a strong adhesion exists betw een chitosan and cellulose. According to the fractionational composition of the products, the produced: agglomerates are not stabilized by chemical bo nds. As evidenced by IR spectroscopy, a system of hydrogen bonds formed bet ween hydroxyl and amino groups of poly(saccharides) undergoes a qualitative change. This fact provides evidence that the blending of poly(saccharides) proceeds on a molecular level.