Synthesis and UV absorption properties of 2-naphthylamine-1,5-disulfonic acid intercalated Zn-Al layered double hydroxides

被引：48

作者：

Chai, Hao ^{[1
]}

Lin, Yanjun ^{[1
]}

Evans, David G. ^{[1
]}

Li, Dianqing ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Sttae Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2008年 / 47卷 / 09期

关键词：

D O I：

10.1021/ie071043s

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A large anionic UV absorbent has been intercalated into a layered double hydroxide (LDHs) host by ion-exchange of an Zn-Al LDHs-nitrate precursor with a solution of 2-naphthylamine-1,5-disulfonic acid in water. After intercalation of the UV absorbent, the powder X-ray diffraction (XRD) pattern shows that the interlayer distance in the LDHs increases from 0.90 to 1.56 nm. The possible structure is that the interlayer NADA anions arrange in a monolayer and a slantwise orientation toward the hydroxide layers. Infrared spectra and TG-DTA curves reveal the presence of a complex system of supramolecular host-guest interactions between layers. The thermal stability of the intercalated UV absorbent was investigated by TG-DTA and it was found that this material is more stable than the pure UV absorbent at high temperature, showing that the thermostability is markedly enhanced after intercalation into the LDHs host. The UV absorbent-intercalated LDHs exhibit excellent UV photostability in polypropylene composites.

引用

页码：2855 / 2860

页数：6

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