Journal of Thermal Analysis and Calorimetry

, Volume 119, Issue 3, pp 1905–1912 | Cite as

Hybrids of Mg–Al-layered double hydroxide and multiwalled carbon nanotube as a reinforcing filler in the l-phenylalanine-based polymer nanocomposites

  • Shadpour Mallakpour
  • Mohammad Dinari


In this study, hybrid nanofiller based on acid functionalized multiwalled carbon nanotube (CNT) and Mg–Al-layered double hydroxide (LDH) was used as reinforcing agent in the preparation of the amino acid containing polymer nanocomposites. LDH–CNT nanofillers were prepared in aqueous solution by ultrasonic irradiation in one-step. An optically active poly(amide-imide) (PAI) was prepared under green condition using molten tetra-n-butylammonium bromide. PAI/LDH–CNT nanocomposites containing 2, 4, and 8 mass% of LDH–CNT were prepared by ultrasonic method, and the structure and morphology of the obtained hybrid compounds were characterized by different techniques. The homogeneous dispersion of nanofillers in the PAI matrix was observed by field emission scanning electron microscopy and transmission electron microscopy. The obtained results revealed a coexistence of exfoliated and intercalated modified LDH–CNT in polymer matrix. Strong combination of the above nanofillers with the PAI matrix provided an efficient thermal improvement for the resulted nanocomposites.


Layered double hydroxide (LDH) Multiwalled carbon nanotube Ultrasonic irradiation Chiral poly(amide-imide)s Thermogravimetric analysis 



The partial financial support from the Research Affairs Division Isfahan University of Technology (IUT), Isfahan is gratefully acknowledged. Also, thankfully acknowledged of Iran Nanotechnology Initiative Council (INIC), and National Elite Foundation (NEF) for partial support.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2014

Authors and Affiliations

  1. 1.Organic Polymer Chemistry Research Laboratory, Department of ChemistryIsfahan University of TechnologyIsfahanIslamic Republic of Iran
  2. 2.Nanotechnology and Advanced Materials InstituteIsfahan University of TechnologyIsfahanIslamic Republic of Iran
  3. 3.Department of Chemistry, Center of Excellence in Sensors and Green ChemistryIsfahan University of TechnologyIsfahanIslamic Republic of Iran

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