Synthesis and physicochemical properties of new polymeric complexons based on fibre nitron

N.B. Tavakalyan, S.G. Gyulmisaryan, S.A. Hechoyan, P.S. Voskanyan

Yerevan institute "Plastpolimer", Yerevan

The complex of physical and chemical characteristics defines properties and functions of a wound covering. The model for an assessment of absorption of exudate from a wound by a polymeric covering is offered. Recommendations about a choice of wound polymeric coverings allow to facilitate further clinical tests.

Keywords: wound coating, polymer coating, water-insoluble polymeric membrane.

THE FEATURES OF THE ANALYSIS OF ORIENTATION OF CRYSTALLITES IN NATURAL CELLULOSE FIBRES METHOD OF X-RAY diffractometer

A.E. Zavadsky

Research Institute of Thermodynamics and Kinetics of Chemical Processes, Ivanov State University of Chemical Technology, Ivanov

The technique of the x-ray diffractometer analysis of orientation of crystal formation in natural cellulose fibers with use of the special holder of samples is described. Possibility of the accounting of a spiral corner of a twisting of fibrilla in cotton fibers is shown and essential influence of the specified factor on indicators of orientation of crystallites is proved. The interrelation of increase of explosive loading of cotton fabric as a result of a mercerization with increase in orientation of crystallites in fibers is shown.

Keywords: x-ray diffractometer analysis, cellulose fiber, crystal formation.