Preparation of copolymer-grafted mixed-mode resins for immunoglobulin G adsorption

  • Shenggang Chen
  • Tao Liu
  • Ruiqi Yang
  • Dongqiang Lin
  • Shanjing YaoEmail author
Research Article


The mixed-mode resins for protein adsorption have been prepared by a novel strategy, copolymer grafting. Specially, the copolymer-grafted resins CG-MA with two functional groups, 5-amino-benzimidazole (ABI) and methacryloxyethyltrimethyl ammonium chloride (METAC), have been prepared through surface-initiated activator generated by electron transfer for atom transfer radical polymerization of METAC and glycidyl methacrylate (GMA), followed by a ring-open reaction to introduce ABI. The charge and hydrophobicity of CG-MA resins could be controlled by manipulating the addition of METAC and GMA/ABI. Besides, METAC and ABI provided positive effects together in both protein adsorption and elution: dynamic binding capacity of human Immunoglobulin G (hIgG) onto CG-M-A resin with the highest ligand ratio of METAC to ABI is 46.8 mg∙g–1 at pH 9 and the elution recovery of hIgG is 97.0% at pH 5. The separation experiment showed that purity and recovery of monoclonal antibody from cell culture supernatant are 96.0% and 86.5%, respectively, indicating that copolymer-grafted mixed-mode resins could be used for antibody purification.


atom transfer radical polymerization copolymer-grafting mixed-mode resin protein adsorption 


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This work was supported by the National Natural Science Foundation of China. The authors have declared no conflict of interest.

Supplementary material

11705_2018_1745_MOESM1_ESM.pdf (702 kb)
Preparation of copolymer-grafted mixed-mode resins for immunoglobulin G adsorption


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Copyright information

© Higher Education Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Shenggang Chen
    • 1
  • Tao Liu
    • 1
  • Ruiqi Yang
    • 1
  • Dongqiang Lin
    • 1
  • Shanjing Yao
    • 1
  1. 1.Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological EngineeringZhejiang UniversityHangzhouChina

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