Structure and impact strength of ABS polymers

This paper has dealt with the phenomenal theory describing impact strength as the result of the competition of breaking and yield processes inside the material. Because the breaking processes are not too temperature and deformation speed dependent, they were roughly considered as the one-point constant. The yielding processes were described by means of the EYRING's theory of the absolute reaction rates. From this viewpoint were discussed relations between some structural features of ABS polymers: the chemical composition of rubber, the molecular weight of the S-AN copolymer, the content and degree of the crosslinking of rubber and the degree of grafting. In all cases was achieved a satisfactory agreement between the proposed theory and the experiment.