壳聚糖/碳酸钙-硅烷纳米复合材料的制备、表征、体外生物活性及 Cu(II)吸附性能。
Chitosan/CaCO-silane nanocomposites: Synthesis, characterization, in vitro bioactivity and Cu(II) adsorption properties.
机构信息
Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan, 84156-83111, Islamic Republic of Iran; Research Institute for Nanotechnology and Advanced Materials, Isfahan University of Technology, Isfahan, 84156-83111, Islamic Republic of Iran.
Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan, 84156-83111, Islamic Republic of Iran.
出版信息
Int J Biol Macromol. 2018 Jul 15;114:149-160. doi: 10.1016/j.ijbiomac.2018.03.076. Epub 2018 Mar 17.
Chitosan nanocomposites containing 2, 5, 8wt% of calcium carbonate-γ-aminopropyl triethoxy silane (CS/CC-ATS NCs) were prepared by ultrasonic irradiation. After characterizing of physicochemical properties of the obtained CS/CC-ATS NCs, their performance was evaluated for both the bone-like apatite mineralization and the removal of Cu(II). The field emission-scanning electron microscopy images from the in vitro bioactivity of the CS and the CS/CC-ATS NC 5wt% displayed that the hydroxyapatite was produced on the samples surface. However, the distribution of it on the surface of CS/CC-ATS NC 5wt% was better than the pure CS. The uptake of Cu(II) on the CS/CC-ATS NC 5wt% was studied under different adsorption conditions such as contact time, the initial concentration of metal ion and adsorbent amount. The results of isothermal adsorption of the pure CS and the CS/CC-ATS NC 5wt% were well fitted by Langmuir model for Cu(II) with adsorption capacity of 33.33 and 33.90mg·g, respectively. As a result, the CS/CC-ATS NC has great potencies in both the bone tissue engineering and the uptake of toxic metal from solution.
壳聚糖纳米复合材料，含有 2、5、8wt%的碳酸钙-γ-氨丙基三乙氧基硅烷（CS/CC-ATS NCs），通过超声辐射制备而成。在对所得 CS/CC-ATS NCs 的物理化学性质进行表征后，评估了它们在骨样磷灰石矿化和去除 Cu(II) 两方面的性能。体外生物活性的场发射扫描电子显微镜图像显示，CS 和 CS/CC-ATS NC 5wt%的表面生成了羟基磷灰石。然而，CS/CC-ATS NC 5wt%表面上羟基磷灰石的分布要好于纯 CS。在不同的吸附条件下，如接触时间、金属离子初始浓度和吸附剂用量，研究了 CS/CC-ATS NC 5wt%对 Cu(II)的吸附。纯 CS 和 CS/CC-ATS NC 5wt%的等温吸附结果均很好地符合 Langmuir 模型，Cu(II)的吸附容量分别为 33.33 和 33.90mg·g。结果表明，CS/CC-ATS NC 在骨组织工程和从溶液中去除有毒金属方面具有很大的潜力。
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