B 2O 3-SiO 2-Na 2O Controlled-release Material: Synthetic Parameters Optimization and Release Mechanisms Exploration

【Author】

HUANG Chang-Xing;CUI Jun;PEI Yuan-Sheng

【Institution】

Key Laboratory of Water and Sediment Sciences, School of Environment, Beijing Normal University;Key Laboratory of Water and Sediment Sciences, School of Environment, Beijing Normal University;Key Laboratory of Water and Sediment Sciences, School of Environment, Beijing Normal University

【Abstract】

Aiming at optimization of synthetic process, reduction of raw materials loss and control of production cost, the single factor method was used to study the effects of different heating rate, holding time, melting temperature, and initial temperature on the B 2O 3 volatilization and bubble formation during the preparation of borate controlled-release material (BCRM). The physicochemical properties of BCRM before and after controlled release were characterized by X-ray diffraction analysis, infrared spectroscopy and X-ray photoelectron spectroscopy, and the release mechanism of BCRM was analyzed by Korsmeyer-Peppas model. The results show that the amount of B 2O 3 volatilization can be reduced to 1.08%, no bubble forms in the transparent BCRM, and controlled-release performance is acceptable under the optimum conditions of initial temperature 1050 °C, holding time 2 h and melting temperature 1050 °C. The controlled-release mechanism of BCRM, affected by temperature, is Super Case II transport at 30 °C and 35 °C while it is non-Fickian diffusion at 40 °C. However, the cumulative release rate of boron is greater than 95% at different temperatures.

【Keywords】

borate;process parameter optimization;B 2O 3 volatilization;release mechanism

References

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Total: 22 articles

  • [1] ZHANG Xin1,JIA Wei-Tao2,GU Yi-Fei1,ZHANG Chang-Qing2 HUANG Wen-Hai1,WANG De-Ping1,3(1.Intitute of Bio-engineering and Information Technology Materials,School of Materials Science and Engineering,Tongji University,Shanghai 200092,China;2.Shanghai Sixth People's Hospital,Shanghai 200233,China;3.Key Laboratory of Advanced Civil Engineering Materials,Tongji University,Shanghai 200092,China), Borate Bioglass Based Drug Delivery of Teicoplanin for Treating Osteomyelitis, Journal of Inorganic Materials,
  • [2] LIU Xiao-qing1,HE Feng2,FANG Yu2,QIAO Yong3(1.Materials Research and Testing Center,Wuhan University of Technology,Wuhan 430070,China; 2.School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China; 3.Qinhuangdao Glass Industry Research & Design Institute,Qinhuangdao 066004,China), Technical Researches on Volatilization Reduction of B_2O_3 in Borosilicate Glasses, Journal of Wuhan University of Technology,
  • [3] Xu Xiaoyun;Jia Dehua;Liu Jun;Wu Shuangjiu;Construction Engineering Test Center of Central Research Institute of Building and Construction, Co., Ltd.,MCC Group;, Determination of Boron in Silica Refractory Raw Materials by ICP–OES, Chemical Analysis and Meterage,
  • [4] HAN Juan;HE Feng;MEI Shu-xia;JIN Ming-fang;XIE Jun-lin;State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology;, Effect of Na_2O/B_2O_3 on Structure and Properties of Borosilicate Glass, Journal of Wuhan University of Technology,

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