Premium
Synthesis of polycarbonate‐ co ‐poly( p ‐ethylphenol) and CdS nanocomposites
Author(s) -
Wang J.,
Montville D.,
Gonsalves K. E.
Publication year - 1999
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/(sici)1097-4628(19990628)72:14<1851::aid-app7>3.0.co;2-n
Subject(s) - polycarbonate , copolymer , nanocomposite , polymer , materials science , polymer chemistry , fourier transform infrared spectroscopy , polymer nanocomposite , chemical engineering , absorption (acoustics) , composite material , engineering
The enzyme‐catalyzed synthesis of poly( p ‐ethylphenol) (PEP) was modified by copolymerization with polycarbonates through triphosgene at low temperature to form polycarbonate‐ co ‐poly( p ‐ethylphenol) (PC‐ co ‐PEP). FTIR, NMR, GPC, and thermal analysis verified the formation of PC‐ co ‐PEP. The copolymers have an optical absorption in the UV range. CdS semiconductor nanocrystallites were synthesized in reversed micelles with subsequent in situ enzymatic copolymerization of p ‐ethylphenol and 4‐hydroxythiophenol in the same medium. TEM and ATR–FTIR showed that the polymer precipitated in spherical morphologies, incorporating CdS nanocrystals into the polymer matrix, with surface hydroxyl groups. The polymer/CdS core was then dispersed into polycarbonate. The polymer/CdS nanocomposites showed higher optical aborbance in the UV‐vis range when compared to the polymer matrix without CdS. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 72: 1851–1868, 1999