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氨丙基三乙氧基硅烷嫁接蒙脱石的制备与表征 被引量:2

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摘要 采用有机硅烷(氨丙基三乙氧基硅烷)对蒙脱石及其酸化土进行嫁接改性,制备了有机硅嫁接蒙脱石,并利用X射线衍射(XRD)、傅里叶转换红外光谱(FTIR)和热重分析(TG)等技术对有机硅嫁接蒙脱石的结构进行了表征.XRD结果表明,有机硅烷嫁接产物的层间距明显增大,说明有机硅烷进入了蒙脱石及其酸化土的层间,并以双层排列方式存在于蒙脱石及其酸化土的层间域内.TG结果表明,酸化处理会降低蒙脱石的热稳定性,但通过对其进行有机硅烷嫁接改性后,不仅能够提高产物的热稳定性,而且能够改变蒙脱石及其酸化土表面与端面的亲和性.
出处 《科学通报》 EI CAS CSCD 北大核心 2008年第21期2624-2629,共6页 Chinese Science Bulletin
基金 中国科学院知识创新工程重要方向(批准号:KZCX2-YW-112) 国家杰出青年科学基金(批准号:40725006) 国家自然科学基金(批准号:40572023)资助项目
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