JOURNAL OF LIGHT INDUSTRY

CN 41-1437/TS  ISSN 2096-1553

Volume 36 Issue 2
April 2021
Article Contents
LIU Ruixue, LI Yingbo and CHEN Jichao. Preparation and properties of CMCS-PMMS/PAAm composite hydrogel based on pH-adjustment[J]. Journal of Light Industry, 2021, 36(2): 64-73. doi: 10.12187/2021.02.009
Citation: LIU Ruixue, LI Yingbo and CHEN Jichao. Preparation and properties of CMCS-PMMS/PAAm composite hydrogel based on pH-adjustment[J]. Journal of Light Industry, 2021, 36(2): 64-73. doi: 10.12187/2021.02.009 shu

Preparation and properties of CMCS-PMMS/PAAm composite hydrogel based on pH-adjustment

  • Received Date: 2020-06-16
    Accepted Date: 2021-01-14
  • polymethyl methacrylate-methacrylic acid/silica (Poly(MMA/MAA)/SiO2,that is,PMMS),carboxymethyl chitosan (CMCS),acrylamide (AAm) were used as raw materials,EDC/NHS as catalysis,the CMCS-PMMS/PAAm composite hydrogel was prepared by pH adjustment,free radical polymerization.The rheological properties,mechanical properties,swelling properties,electrical conductivity and biocompatibility of the hydrogels were studied.The results showed that the pH value had a great influence on the rheological properties of the composite hydrogel.The storage modulus (G') decreased first and then increased.When the pH value was 6,the G' maximum was 9200 Pa; Hydrogels with low pH were stiff,and the ones with high pH were soft and tough.When the pH value was 9 or 10,the composite hydrogel could maintain a good shape under a large compressive strain. It had good tensile properties and cyclic compressibility.The composite hydrogel also had good swelling properties,and even after water absorption reached the swelling equilibrium,it could still maintain the deformation recovery ability (the equilibrium swelling rate in pure water could reach 860%).In addition,the hydrogel had good conductivity,the highest conductivity could reach 2.98×10-4 S/cm; and it had good anti-hemolysis performance and cell compatibility.The hemolysis rate of all composite hydrogel samples was less than 5%,and the cytoactive was more than 75%.
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