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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    No. 6    December 2009

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Self-assembling organomodified Co/Al basedlayered double hydroxides (LDH) via one-step rout
WANG De-yi(王德义)1, 2, 3, A. LEUTERITZ3, U. WAGENKNECHT3, G. HEINRICH3

1. Center for Degradable and Flame-Retardant Polymeric Materials (ERCEPM-MoE),
College of Chemistry, Sichuan University Chengdu 610064, China;
2. State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610064, China;
3. Leibniz Institute of Polymer Research, Dresden D01069, Germany

Abstract:The preparation of self-assembling organomodified Co/Al-layered double hydroxide (LDH) via one-step route was studied. A common surfactant, sodium dodecylbenzenesulfonate (DBS), was employed as an organic modifier. The behavior and structure of self-assembled intercalated organic Co/Al-LDH were investigated by FTIR, SEM, WAXS, element analysis and TGA. Based upon the WAXS results and calculation by Bragg equation, the interlayer distance (d value) for organic Co/Al-LDH is enlarged from 0.75 nm to 3.10 nm, showing that the self-assembling behavior has been carried out successfully. Considering the observation from SEM, the product shows the morphology of organic Co/Al-LDH of a layered structure. In addition, FTIR, element analysis and TGA analysis show that the modifier is intercalated into the gallery of the Co/Al-LDH. Since organic modification for nanofiller is deemed to be necessary before applying it into polymer, the successful preparation of organomodified Co/Al-LDH will be significantly beneficial to the preparation and investigation of novel polymer/LDH nanocomposite.

 

Key words: layered double hydroxide (LDH); self-assembling; Co/Al; nanostructure

ISSN 1672-7029
CN 43-1423/U

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