, Volume 26, Issue 5, pp 3255–3269 | Cite as

Fabrication and performance characterization of the membrane from self-dispersed gelatin-coupled cellulose microgels

  • Yijun Yao
  • Hongru WangEmail author
  • Ruirui Wang
  • Yong Chai
  • Wanli Ji
Original Research


A new gelatin-coupled cellulose (GCC) microgel system was successfully prepared in NaOH/urea aqueous solution with epichlorohydrin (ECH) as a coupling agent via dialysis and self-dispersion pathway. The structure and property of the microgel and its membrane were characterized by elemental analysis, dynamic light scattering (DLS), Fourier transform infrared (FTIR) spectra, gel permeation chromatography (GPC), scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). It was concluded that successful coupling interactions occurred between cellulose and gelatin during the fabrication process, and the weight-average molecular weight of GCC microgel was up to 636.60 kDa with polydispersity index (PDI) of 1.015 approximately. The crystalline structure of the modified cellulose was destroyed, leading to GCC product self-dispersed in water in the absence of NaOH and urea. The GCC microgels had whisker-like structure, and their Z-average particle sizes were approximately 86.1 nm–150.2 nm and decreased with the increases of the gelatin content (WGel). In comparison with the water contact angle, swelling behavior and thermostability of the existing water-soluble cellulose derivative, the microgel membranes exhibited better water resistance and thermal resistance properties.

Graphical abstract


Gelatin-coupled cellulose Microgel Dialysis Self-dispersion 



This work was supported by the Hongliang Research Fund (413118) and Doctor Research Fund of Shaanxi University of Science and Technology.

Supplementary material

10570_2019_2263_MOESM1_ESM.docx (81 kb)
Supplementary material 1 (DOCX 81 kb)


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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  • Yijun Yao
    • 1
  • Hongru Wang
    • 1
    Email author
  • Ruirui Wang
    • 1
  • Yong Chai
    • 1
  • Wanli Ji
    • 1
  1. 1.College of Bioresources Chemical and Materials EngineeringShaanxi University of Science and TechnologyXi’anChina

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