PHYSICAL AND CHEMICAL STUDY FLOOR COMPOSITION "SINTEZIN" USED IN THE PRODUCTION OF FILLED FIBER
The complex physical and chemical investigation of lubricating compositions «Synthesin SE 128 Fill» (made in Germany) used in the production of filled polyester and polyamide fibers. IR spectroscopic study of the model range of polymethylsiloxanes (PMS) confirmed that the basis for the composition of single-component modified silicone oil emulsion in water. The presence of amino groups in the macromolecule main component of the composition follows from the consideration of difference UV and IR spectra of anhydrous product, on the one hand, and chemically pure PMS - on the other. There is a shift of the stretching vibration of-NH-group to lower frequencies by more than 900-400 cm -1 as expected for the fragment -CH2-NH-. This supports the fact that the amino group is part of the fragment Si-NH-. The results of potentiometric titration confirmed that the content of amino groups is negligible. The average molecular weight of the macromolecule modified polymethylsiloxane, calculated according to the potentiometric titration is at 5917. It is, as well as structural studies have allowed to propose a chemical formula of the active ingredient composition "Sintezin" and locking mechanism of lubricant on the fiber surface.