Mechanical behavior and fracture toughness evaluation of K resin grafted with maleic anhydride compatibilized polycarbonate/K resin blends

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2007-01, Vol.444 (1), p.84-91
• Main Authors: Jing, Bo, Dai, Wenli, Chen, Shubai, Hu, Tao, Liu, Pengsheng
• Format: Article
• Language: English
• Subjects: Blends; Condensed matter: structure, mechanical and thermal properties; Deformation and plasticity (including yield, ductility, and superplasticity); Essential work of fracture (EWF); Exact sciences and technology; Fatigue, brittleness, fracture, and cracks; Fracture toughness; K resin; Mechanical and acoustical properties of condensed matter; Mechanical behavior; Mechanical properties of solids; Physics; Polycarbonate
• ISSN: 0921-5093; 1873-4936
• DOI: 10.1016/j.msea.2006.08.036

The mechanical behavior and fracture toughness evaluation of polycarbonate (PC)/K resin (K) blends, with and without maleic anhydride grafted K resin (K-g-MAH) incorporated, have been studied. The effect of K-g-MAH on the mechanical performance of the PC/K blends was investigated. The results showed that both the tensile strength, elongation at break and impact strength of PC/K blends were improved considerably with incorporating K-g-MAH. This resulted from the melioration of compatibility between the PC and K resin phases. The essential work of fracture (EWF) method was employed to determine the fracture toughness of PC/K blends with and without K-g-MAH incorporated. The effect of composition on the EWF parameters of the blends was particularly investigated. The results showed that a significant improvement in w e of PC/K blends appeared when the K-g-MAH was incorporated, but it hardly influenced the plastic deformation during the fracture process.