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| 下载次数 | 被引频次 | 阅读次数 |
以壳聚糖(chitosan,CS)和凹凸棒石粘土(attapulgite,ATP)为原料,运用乳化交联法制备了一种具有高吸附性能的凹凸棒石黏土/壳聚糖树脂微球(attapulgite/chitosan resin microspheres,ACRM),利用扫描电镜和Fourier变换红外光谱对微球形貌和结构进行了表征。考察了ATP用量对微球溶胀度、孔隙率、凝胶含量和质量损失率等孔参数的影响,以获得最佳ATP添加量,结果表明:ACRM具有较好的球形和均匀的粒径分布,与壳聚糖树脂(chitosan resin microspheres,CRM)相比,当ATP添加量是壳聚糖质量的20%时,所得复合微球的孔隙率由62.3%提高到82.8%,质量损失率由9.3%降低至5.1%,其对鞣酸的最高吸附达455 mg/g,是CRM的两倍。ATP的引入显著改善了CRM的吸附能力和酸稳定性。
Abstract：The attapulgite/chitosan resin microspheres(ACRM) with higher absorbability,based on the hybridization of chitosan(CS) and attapulgite(ATP),were prepared by an emulsion cross-linking technique.The samples were characterized by Fourier transform infrared spectroscopy and scanning electron microscopy.The effect of ATP on the pore parameters of the ACRM(such as the swelling degree,porosity,gel content and ratio of mass loss) was investigated.The optimum amount of ATP was obtained.The results show that the ACRM appears spherical and uniform-sized distribution.Compared to the chitosan resin microspheres(CRM),the porosity of the ACRM with the ATP of 20%(in mass) increased from 62.3% to 82.8%,and the ratio of mass loss decreased from 9.3% to 5.1%.The maximum adsorption amount of the ACRM for tannic acid was 455 mg/g,which was twice greater than that of the CRM.The introduction of the ATP improved the absorbability and the acid resistance of the CRM.
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基本信息:
DOI：10.14062/j.issn.0454-5648.2011.07.024
中图分类号:TQ320.1
引用信息:
[1]吴洁,陈静,舒畅,等.凹凸棒石黏土/壳聚糖复合树脂微球的制备与表征(英文)[J].硅酸盐学报,2011,39(07):1201-1205.DOI:10.14062/j.issn.0454-5648.2011.07.024.
基金信息:
江苏省工业支撑计划(BE2009098)资助项目;; 江苏省自然科学基金(BK2008195)资助项目
2011-07-15
2011-07-15