Fracture behavior of polycarbonate/polyestercarbonate blends

Yong Bum Lee, Choon Soo Lee, Dae Sik Kim, Jong Hyun Kim, Jae Young Jho, Sang-Soo Lee

Research output: Contribution to journalArticle

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 a carbonate content higher than 30 mol% was miscible with PC. In the 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.

Original languageEnglish
Pages (from-to)537-542
Number of pages6
JournalPolymer (Korea)
Volume35
Issue number6
Publication statusPublished - 2011 Nov 1

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polycarbonate
Polycarbonates
Impact strength
Carbonates
Brittle fracture
Elongation
Solubility
Plastics

Keywords

  • Blend
  • Ductile-brittle transition
  • Polycarbonate
  • Polyestercarbonate
  • Thickness sensitivity

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Lee, Y. B., Lee, C. S., Kim, D. S., Kim, J. H., Jho, J. Y., & Lee, S-S. (2011). Fracture behavior of polycarbonate/polyestercarbonate blends. Polymer (Korea), 35(6), 537-542.

Fracture behavior of polycarbonate/polyestercarbonate blends. / Lee, Yong Bum; Lee, Choon Soo; Kim, Dae Sik; Kim, Jong Hyun; Jho, Jae Young; Lee, Sang-Soo.

In: Polymer (Korea), Vol. 35, No. 6, 01.11.2011, p. 537-542.

Research output: Contribution to journalArticle

Lee, YB, Lee, CS, Kim, DS, Kim, JH, Jho, JY & Lee, S-S 2011, 'Fracture behavior of polycarbonate/polyestercarbonate blends', Polymer (Korea), vol. 35, no. 6, pp. 537-542.
Lee YB, Lee CS, Kim DS, Kim JH, Jho JY, Lee S-S. Fracture behavior of polycarbonate/polyestercarbonate blends. Polymer (Korea). 2011 Nov 1;35(6):537-542.
Lee, Yong Bum ; Lee, Choon Soo ; Kim, Dae Sik ; Kim, Jong Hyun ; Jho, Jae Young ; Lee, Sang-Soo. / Fracture behavior of polycarbonate/polyestercarbonate blends. In: Polymer (Korea). 2011 ; Vol. 35, No. 6. pp. 537-542.
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