Header menu link for other important links
X
Blends of polycarbonate with unmodified and maleic anhydride grafted ABS: fracture mechanics
Sunder Balakrishnan, N. R. Neelakantan
Published in Kluwer Academic Publishers, Dordrecht, Netherlands
1999
Volume: 34
   
Issue: 21
Pages: 5181 - 5185
Abstract
Physical blends of polycarbonate (PC) and acrylonitrile-butadiene-styrene terpolymer (ABS) at two different weight fractions were made (PC35/ABS65 and P75/ABS25). Reactive blended similar compositions of PC with maleic anhydride grafted ABS (MABS) were also made at the same compositions. The crack resistance behaviour of these two types of blends and feedstocks (PC and ABS) were studied. The generalized locus method was used to investigate the invariance of crack resistance from any set of characteristic points. PC and PC/ABS blends failed immediately after crack initiation. The modified blends (PC/MABS) exhibited failure through crack propagation after crack initiation started. The resistance to crack initiation is determined in terms of critical J-integral value (Jc). The resistance to crack propagation at maximum load point is also determined from the locus of maximum load point on the load-displacement curves. The resistance to steady state crack growth (Rp) during extensive crack propagation is determined from the total essential energy for a complete fracture. The crack resistance values for modified blends are much high compared to unmodified blends and even feedstocks.
About the journal
JournalJournal of Materials Science
PublisherKluwer Academic Publishers, Dordrecht, Netherlands
ISSN00222461
Open AccessNo
Concepts (9)
  •  related image
    Abs resins
  •  related image
    Composition
  •  related image
    Crack initiation
  •  related image
    Crack propagation
  •  related image
    FRACTURE MECHANICS
  •  related image
    POLYCARBONATES
  •  related image
    CRACK RESISTANCE
  •  related image
    CRITICAL INTEGRAL VALUE
  •  related image
    Polymer blends