Surface activation and modification of sulphur-vulcanised rubber particles

摘要

Process for surface activation and modification of sulphur crosslinked rubber particles by biotechnical treatment in a suspension of the rubber particles, water and biologically active material for breaking the polysulphidic sulphur bridges and for oxidising the sulphur, by which the treatment is limited to the particle surface and reactive groups in the form of hydroxyl groups, epoxy groups and carboxyl groups are formed over a period of time, the biotechnical treatment being terminated when the concentration of reactive functional groups reaches a maximum.