Toughening of epoxy using PEP-PEO block copolymer nanoparticles Conference Paper uri icon

abstract

  • A block copolymer (BCP) toughening agent, which forms self-assembled spherical micelle particles (15 nm), was utilized to toughen epoxy. The nano-sized BCP at 5 wt% concentration can significantly improve the fracture toughness of epoxy without deterioration in modulus and with only a slight reduction in glass transition temperature (Tg). The major toughening mechanisms are found to be BCP nanoparticle cavitation-induced matrix shear banding. Possible reasons responsible for the remarkable mechanical property improvements due to the BCP modification are discussed.

author list (cited authors)

  • Liu, J., Sue, H. J., Thompson, Z. J., Bates, F. S., Dettloff, M., Jacob, G., Verghese, N., & Pham, H.

publication date

  • January 2009