Analyses of Additives Applied in a Polycarbonate

폴리카보네이트에 사용된 첨가제의 분석

  • Kim, Seog-Jun (Department of Chemical Engineering, Kunsan National University)
  • 김석준 (군산대학교 공과대학 화학공학과)
  • Received : 2000.01.29
  • Published : 2000.06.25

Abstract

In this study, polymer additives were extracted and separated by Soxhlet extraction method and the dissolution-precipitation method from a polycarbonate (optical grade) which completely absorbed UV light below 390 nm. Analytical techniques such as UV-Vis spectroscopy, FT-IR, and HPLC were applied to analyze additives in polycarbonate. Separated materials from the polycarbonate may be a complex mixture containing additives such as UV stabilizer, antioxidants (primary and secondary), monomers, and oligomers. Several compounds such as bisphenol A, Irganox 1010, and Cyasorb UV-5411 were identified by chromatograms and UV spectra obtained from RP HPLC analysis using Bondapak $C_{18}$ column, methanol mobile phase, and a photodiode array (PDA) detector. Also, the content of UV-5411 in the polycarbonate was about 0.12 wt% by a quantitative analysis through UV spectroscopy.

Keywords

additives;Cyasorb UV-5411;Irganox 1010;HPLC;PDA

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