화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.29, No.12, 895-904, December, 2021
DOI10.1007/s13233-021-9098-0  Export Citation
Silk Sericin-Polyethyleneimine Hybrid Hydrogel with Excellent Structural Stability for Cr(VI) Removal
Subin Oh1, Jungkyu Kim2, YunJin Kim2, Subong Park3, Hyoung-Joon Jin1, 4, †, and Hyo Won Kwak2, 5, †
  • 1Program in Environmental and Polymer Engineering, Inha University, 100 Inha-ro, Michuhol-gu, Incheon 22212, Korea
  • 2Department of Agriculture, Forestry and Bioresources, College of Agriculture & Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
  • 3Fisheries Engineering Division, National Institute of Fisheries Science, Busan 46083, Korea
  • 4Department of Polymer Science and Engineering, Inha University, 100 Inha-ro, Michuhol-gu, Incheon 22212, Korea
  • 5Research Institute of Agriculture and Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
E-mail:,
In this study, a hydrogel-type high-performance Cr(VI) adsorbent was prepared using silk sericin (SS), a secondary silkworm silk protein. Cationic polyethyleneimine (PEI) was used during gelation to confer structural stability to SS and improve its Cr(VI) adsorption performance. The compressive test results indicated that the compression deformation stability of the SS-PEI hybrid hydrogel was four times higher than that of the pristine SS hydrogel owing to the synergistic effect of electrostatic attraction and chemical crosslinking. In addition, the SS-PEI hydrogel presented an excellent Cr(VI) removal capacity of 466 mg/g, which was the highest value among all the SS-based adsorption materials reported to date. In addition, SS-PEI maintained an excellent adsorption efficiency of 90.3% after six adsorption cycles.
Keywords:silk;sericin;polyethyleneimine (PEI);hydrogel;Cr(VI) removal;adsorbent
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