화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.20, No.5, 484-489, May, 2012
DOI10.1007/s13233-012-0044-z  Export Citation
Synthesis of Novel Poly(N,N-diethylacrylamide-co-acrylic acid) (P(DEA-co-AA)) Microgels as Carrier of Horseradish Peroxidase Immobilization for Pollution Treatment
Yaping Zhang1, Tonghuan Liu2, Qiang Wang1, Jihua Zhao1, Jian Fang1, †, and Weiguo Shen1, 3
  • 1College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
  • 2College of Nuclear Science and Technology, Lanzhou University, Lanzhou, 73000, P. R. China
  • 3Department of Chemistry, East China University of Science and Technology, Shanghai, 200237, P. R. China
E-mail:
A series of temperature-sensitive N,N-diethylacrylamide-co-acrylic acid microgels were synthesized by modified surfactant-free emulsion polymerization method and characterized by Fourier transform infrared spectroscopy, turbidimetric method, scanning electron microscopy (SEM), and dynamic light scattering (DLS) measurements. The SEM images showed that the as-synthesized microgels were monodispersed as spherical particles and the average size increased from 200 to 800 nm with the mole fraction of acrylic acid (AA) increasing from 0 to 0.40. Turbidimetric analysis and DLS investigation indicated that the volume phase transition temperature and the swelling ratio of the microgels had an upward trend that was associated with the higher incorporation of AA. Furthermore, horseradish peroxidase (HRP) was successfully immobilized on the microgel with the greatest swelling ratio (the mole fraction of AA equal to 0.40) to obtain an enzyme-microgel complex for the treatment of wastewater polluted by phenolic compounds. The immobilized HRP achieved a high removal efficiency of >96% toward phenol and was more thermostable and more easily stored and reused compared with free HRP.
Keywords:microgel;temperature-sensitive;N,N-diethylacrylamide;horseradish peroxidase;enzyme immobilization.
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