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Effect of polycarbonate molecular weight on polymer blends of polycarbonate and ABS
Author(s) -
Wu JiannShing,
Shen ShuChen,
Chang FengChih
Publication year - 1993
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1993.070500809
Subject(s) - polycarbonate , materials science , acrylonitrile butadiene styrene , composite material , viscosity , polymer , toughness , styrene , polymer blend , polymer chemistry , annealing (glass) , copolymer
The melt viscosity of polycarbonate/acrylonitrile‐butadiene‐styrene (PC/ABS) blends relative to PC is significantly lower, even lower than that of pure ABS in some compositions. Annealing above the T g of PC coalesces and coarsens phase structure in core and skin regions. Increase in the molecular weight of PC in PC/ABS blends results in low‐temperature fracture toughness improvement but suffers from the disadvantage of higher melt viscosity. The selection of PC in PC/ABS blends must be a compromise between the toughness advantages of higher PC molecular weight and the disadvantage of higher melt viscosity. © 1993 John Wiley & Sons, Inc.