Solid-state mechanochemical modification of polyolefins

Study of the mechanochemical modification of PE and PP with maleic anhydrid e, maleic acid, and sodium maleate in the melt and in the solid state showe d inversion of the reactivity of comonomers in the case of processes perfor med in the different phase: states, Variation of the granulometric composit ion of Mt in the solid state revealed correlation between the degree of com onomer grafting and the amount oh plastic deformation of the polymer partic les. The initial and modified Pr samples were analyzed in a derivatograph. On the basis of the thermoanalytical data, a mechanism of the thermooxidati ve degradation of the polymer is suggested The combination of experimental data obtained suggests that the main controlling factor in the solid-state modification of polyolefins is the joint plastic deformation of the system components.