金属氢氧化物直接制备对苯二甲酸插层水滑石及其应用

摘要

以新制备的Mg(OH)2和Al(OH)3滤饼与对苯二甲酸通过水热反应制备了对苯二甲酸插层水滑石(TA-LDHs).使用X射线衍射(XRD)、热重-差热分析、扫描电镜(SEM)等技术对TA-LDHs与碳酸根型水滑石(CO3-LDHs)进行对比研究,结果显示,对苯二甲酸离子成功插入到LDHs层间,产物结构完整、晶相单一,所制得的TA-LDHs为片状.CO3-LDHs和TA-LDHs分别作为纳米填料,以两种不同的添加方式制备聚对苯二甲酸乙二醇酯(PET)/LDHs纳米复合材料.对复合材料进行XRD和SEM研究,结果表明在酯交换反应前添加2%TA-LDHs所制备的PET/LDHs纳米复合材料的层板被部分剥离,分散性最好.%Terephthalate intercalated layered double hydroxides(TA-LDHs)were synthesized using freshly generated hydroxides as raw materials by a hydrothermal reaction.XRD patterns and TG analysis confirmed the structure of intercalated LDHs.SEM micrographs showed the well-defined and uniform sized platelets of the samples.The TA-LDHs synthesized using this method exhibit high purity and crystallinity.Poly(ethylene terephthalate)(PET)/LDHs nanocomposites were prepared using car-bonate LDHs and TA-LDHs as nanofillers respectively.The filling of LDHs was used with two routes. The results of XRD and SEM show the PET/LDHs nanocomposites were partial exfoliated and disper-sed well using TA-LDHs of 2%filling content before ester exchange reaction.