Fracture Behavior of Polycarbonate/Polyestercarbonate Blends

Title
Fracture Behavior of Polycarbonate/Polyestercarbonate Blends
Authors
이용범이춘수김대식김종현조재영이상수
Keywords
polycarbonate; polyestercarbonate; blend; thickness sensitivity; ductile-brittle transition
Issue Date
2011-10
Publisher
폴리머; Polymer(Korea)
Citation
VOL 35, NO 6, 537-542
Abstract
Fracture behaviors of polycarbonate (PC)/polyestrercarbonate (PEC) blends and their miscibility have been examined to find out the mechanism of ductilie-brittle transition of fracture behavior which would be a main governing factor on the thickness sensitivity of impact strength of PC. Tg measurement showed that PEC with carbonate content higher than 30 mol% was miscible with PC. In notched Izod impact test of PC ductile-brittle transition occurred in the range of 4 to 5 mm thickness. The impact strength of miscible PC/PEC5 blends ductile-fractured in the thin specimens decreased with increasing PEC5 content, which was in accordance with the decrease of elongation at break in tensile test. In the brittle fracture of the thick specimens the impact strength was well correlated with the plastic zone size in the vicinity of the notch tip.
URI
http://pubs.kist.re.kr/handle/201004/39895
ISSN
0379-153X
Appears in Collections:
KIST Publication > Article
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