Double imprinted photoresponsive polymer for simultaneous detection of phthalate esters in plastics

Cheng-bin GONG, Yu-bo WEI, Mei-jun CHEN, Lan-tao LIU, Cheuk Fai Stephen CHOW, Qian TANG

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5 Citations (Scopus)

Abstract

A double-phthalate-ester imprinted photoresponsive polymer was fabricated for simultaneous detection of phthalate esters. Specifically, three azobenzene derivatives with different steric characteristics (0, 2, and 4 methyl substituents at the ortho position) were used as functional monomers, supported by ZnO nanoscale support rods. Dibutyl phthalate and dicyclohexyl phthalate esters were used as double templates. The three photoresponsive molecularly imprinted polymers were fabricated with a triethanolamine trimethacrylate ester cross-linker, and were characterized by ultraviolet–visible absorption, Fourier-transform infrared spectroscopy, scanning and transmission electron microscopy, and N2 adsorption–desorption analysis. Steric hindrance affected both photoresponsive properties and binding properties. As the steric hindrance increased, the trans→cis rate constant and the binding capacities decreased. Hence, the polymer with the least steric hindrance was used for the simultaneous detection of phthalate esters in plastic cups and toys. The doubly imprinted polymer was more effective for detection or extraction of the phthalate esters than was a single-phthalate-ester imprinted polymer. Copyright © 2018 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)295-303
JournalEuropean Polymer Journal
Volume108
Early online dateSep 2018
DOIs
Publication statusPublished - Nov 2018

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phthalates
esters
Esters
Polymers
plastics
Plastics
polymers
Dibutyl Phthalate
Triethanolamine
Azobenzene
phthalic acid
Fourier transform infrared spectroscopy
Rate constants
rods
templates
monomers
Monomers
infrared spectroscopy
Transmission electron microscopy
Derivatives

Citation

Gong, C.-B., Wei, Y.-B., Chen, M.-J., Liu, L.-T., Chow, C.-F., & Tang, Q. (2018). Double imprinted photoresponsive polymer for simultaneous detection of phthalate esters in plastics. European Polymer Journal, 108, 295-303. doi: 10.1016/j.eurpolymj.2018.09.009

Keywords

  • Photoresponsive molecularly imprinted polymer
  • Double-template molecular imprinting
  • Phthalate esters
  • Steric hindrance effect
  • Azobenzene