JOURNAL OF LIGHT INDUSTRY

CN 41-1437/TS  ISSN 2096-1553

Volume 35 Issue 1
January 2020
Article Contents
LIU Ruixue, LI Yingbo, LI Yimeng and et al. Study on preparation and properties of chitosan-citrate/polyacrylamide double-network hydrogel[J]. Journal of Light Industry, 2020, 35(1): 63-71. doi: 10.12187/2020.01.008
Citation: LIU Ruixue, LI Yingbo, LI Yimeng and et al. Study on preparation and properties of chitosan-citrate/polyacrylamide double-network hydrogel[J]. Journal of Light Industry, 2020, 35(1): 63-71. doi: 10.12187/2020.01.008 shu

Study on preparation and properties of chitosan-citrate/polyacrylamide double-network hydrogel

  • Received Date: 2019-04-03
    Accepted Date: 2019-06-03
  • Using chitosan (CS), citrate (CA), and acrylamide (AAm) as raw materials, a two-step method was used to prepare the chitosan-citrate/polyacrylamide (CS-CA/PAAm) double-network hydrogel, and the rheological properties, mechanical properties and micro-morphology of the hydrogel with different PAAm contents were analyzed and characterized. The results showed that when the PAAm content was 34.6%, the storage modulus of the hydrogel was up to 50 kPa, and the brittle hydrogel became a flexible hydrogel with an elongation at break of up to 110% and a compressive deformation capacity of 90%. And under the condition of 60% strain, there were almost no hysteresis loops after cyclic compression 3 times, showing good rheological and mechanical properties. The hydrogel had a more dense and porous microstructure. With the introduction of PAAm (0~34.6%), the swelling rate of the hydrogel was reduced from 644% to 84%, and the swelling equilibrium time was shortened from 54 h to 25 h. The hemolysis rate was less than 5%, which met the national standard requirements and had good safety.
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