The topochemistry of the catalytic systems on the surface of polymer supports

The method of spin labels based on stable iminoxyl radicals has been applied to the investigation of the topochemistry of polymer-supported polyethylene-grafting diallylamine (PE-gr-PDAA)and ofimmobilized catalytic systetms. The effective distances between fixed radicals are comparatively large (r? ～ 25-35Å for the case of functional groups of PE-gr-PDAA and r? ≥ 35Å for the case of fixed components of the catalytic systems). The demonstration of step-by-step penetration of the label into the functional cover (100-300 Å) has been made. Correlation times were calculated in the temperature range 290-440K. The dependence of log τ_c on 1/T shows two linear parts to the curve.The activation energies in the α region for PE-gr-PDAA and for the product of its interaction with TiCl₄. Ti(OC₄H₉)₄, and Al(C₂H₅)₂Cl are equal to 13, 14, 24, and 13 Kcal/mole, respectively. The method has been applied to the investigation of Ziegler-Natta immobilized catalytic systems. It has been noted that the labels are fixed not far from each other (r? ≤ 12Å) after the interaction of the catalytic components.