CAUCHO NATURAL 6 ESTIRENO-BUTADIENO MECHANICAL PROPERTIES 6 NATURAL RUBBER 6 BOUND RUBBER 3 CARBON BLACK 3 CONDUCTIVIDAD ELECTRICA 3 ELECTRICAL CONDUCTIVITY 3 ESTABILIDAD TERMICA 3 FILLER/POLYMER INTERACTION 3 GAMMA IRRADIATION PERCOLATION 3 GOMA LIGADA (BOUND RUBBER) 3 HINCHAMIENTO POR SOLVENTE 3 INTERACCION CARGA/POLIMERO 3 IRRADIACION GAMMA 3 MAIN AND SECONDARY RELAXATIONS 3 MNR 3 NEGRO DE HUMO 3 PERCOLACION 3 POSITRON ANNIHILATION SPECTROSCOPY 3 POSITRONES 3 PROPIEDADES MECANICAS 3 PROPIEDADES MECANICAS DINAMICAS 3 RMN 3 STYRENE-BUTADIENE 3 STYRENE-BUTADIENE RUBBER 3 SWELLING 3 TEM 3 THERMAL STABILITY 3 TRACCION 3