Microstructure, Deformation, and Fracture Behavior of Commercial ABS Resins

CELINA R. BERNAL; PATRICIA M. FRONTINI; MIGUEL SFORZA; MIGUEL A. BIBB0

JOURNAL OF APPLIED POLYMER SCIENCE

JOHN WILEY & SONS INC

Lugar: New York; Año: 1995 p. 1 - 10

0021-8995

The microstructure, deformation, and fracture behavior of commercial ABS resins wereinvestigated. Fracture mechanics studies were carried out under both static and dynamicconditions. Fracture toughness was evaluated via the J-integral analysis. In addition staticfracture experiments were conducted at different temperatures. The ABS resins assayedhere exhibited different deformation and fracture behavior depending on loading mode,matrix molecular weight, strain rate, temperature, rubber content, and morphologies. Thereasons for this material's behavior are discussed with the help of scanning and transmissionelectron microscopy (SEM and TEM) investigation methods. The major source of toughnessseems to be matrix crazing and rubber cavitation under both static and dynamic experiences,but at low strain rates shear yielding also contributes to toughening