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    • Keywords


      Stellerite; zeolite X; potassium diformate; chitosan; sustained-release antibacterial agent.

    • Abstract


      A reaction of 800 mesh stellerite and a concentration of 15% hydrochloric acid in a solid to liquid ratio of 1:3 was carried out for 2 h at 80$^{\circ}$C. Most of its impurities were removed. It can be used as precursors for the preparationof high quality zeolite. Zeolite X which is octahedral crystal shape as cube, 96% of the degree of crystallinity has been synthesized hydrothermally from $n({\rm SiO}_2/{\rm Al}_2{\rm O}_3) = 3$, $n({\rm Na}_2{\rm O}/{\rm SiO}_2) = 1.14$ and $n({\rm H}_2{\rm O}/{\rm Na}_2{\rm O}) = 37$ by controlling reaction temperature and time. The synthesis included zeolite X as carriers, chitosan as intermediates, a mass ratio of zeolite X:chitosan:potassium diformate $=$ 3:1:2 in weight for 2 h at 40$^{\circ}$C. X-ray photoelectron spectroscopy analysis showed hydrogen bond formation by the chitosan amino hydrogen, potassium diformate oxygen and zeolite X oxygen or hydrogen bond formation by free hydroxyl group of zeolite X and oxygen of chitosan’s C–O, indicating effective grafting. Zeolite Xsustained-release antibacterial agent was prepared with an inhibition rate of 78.16% by the antibacterial.

    • Author Affiliations



      1. School of Material Science and Engineering, Guilin University of Technology, Guilin 541004, People’s Republic of China
      2. Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, Guilin 541004, People’s Republic of China
      3. College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, People’s Republic of China
    • Dates

  • Bulletin of Materials Science | News

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