Influence of aminosilane coupling agent on aromatic polyamide/intercalated clay nanocomposites

Muhammad Usman Alvi, Sonia Zulfiqar, Cafer T. Yavuz, Hee Seok Kweon, Muhammad Ilyas Sarwar

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Aminosilane grafted and diamine modified reactive montmorillonite was exploited to generate aromatic polyamide based nanocomposites. For better compatibility, the hydrophilic nature of montmorillonite was changed into organophilic using 1,4-phenylenediamine, and the hydroxyl groups present on the clay surface and edges were used to graft 3-aminopropyltriethoxysilane (APTS) on clay sheets. The dispersion of clay was monitored in the polyamide obtained from 1,4-phenylenediamine, 4,4′-oxydianiline, and isophthaloyl chloride. These chains were converted into carbonyl chloride ends to interact with free amine groups of grafted APTS and diamine. Thin films were probed for FTIR, XRD, SEM, TEM, tensile testing, TGA, and DSC measurements. The results described ample dispersion of clay in the nanocomposites with tensile strength increased 110% and elongation increased 172% upon the addition of 4-6 wt % clay. Thermal decomposition temperatures of the nanocomposites were in the range 425-480 °C. The glass transition temperature increased up to 142.4 C with 6 wt % addition of organoclay. © 2013 American Chemical Society.
Original languageEnglish (US)
Pages (from-to)6908-6915
Number of pages8
JournalIndustrial and Engineering Chemistry Research
Volume52
Issue number21
DOIs
StatePublished - May 29 2013
Externally publishedYes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering

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