Solvent induced crystallization of polycarbonate in mixed solvent

D. K. Hwang, C. Y. Lee, Y. G. Shul

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Crystallization behaviour of bisphenol A polycarbonate (PC) from amorphous phase was studied by varing solvent/nonsolvent ratios in liquid phase. Chloroform and isopropanol were used as a solvent and a nonsolvent, respectively. Samples were characterized by optical microphotography, scanning electron microscope (SEM), X-ray diffaction (XRD), and differencial scanning calorimeter (DSC). DSC and XRD measurement were used to determine the crystallinity of PC. The solubility constant seems to critical to control the PC crystallinity in solvent/nonsolvent mixture. The difference in PC crystallinity is explained by the difference in solubility constant of the mixture depending on the solvent/nonsolvent ratio. PC solution of 75/25 wt% (solvent/nonsolvent) ratio produced PC powder showing maximum crystallinity. At this condition solubility constant (9.85) of the mixed solvent was close to PC (9.9).

Original languageEnglish
Pages (from-to)811-817
Number of pages7
JournalPolymer (Korea)
Volume25
Issue number6
Publication statusPublished - 2001

All Science Journal Classification (ASJC) codes

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

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