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Interlayer spacing effect of alkylammonium-modified montmorillonite on conducting and mechanical behaviors of polymer composite electrolytes

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Abstract.
Polymer composite electrolytes (PCE) based on poly(ethylene oxide) (PEO) and alkylammoniumfunctionalized
clay materials were fabricated. Structural modification and the electrochemical properties
were investigated in order to understand the effects of organically modified montmorillonite (OMMT) in
the polymer matrix on the ion conductivity. Nanosize layer-structured clay fillers were used having an
organic modifier with different alkyl lengths and positions. The X-ray diffraction (XRD) results revealed
that the interlayer spacing (2.55 nm) for MMT-20A was increased compared with that (1.16 nm) for Na-
MMT. Both the XRD and the thermal analysis results indicated that the PCE showed reduced crystallinity
after the introduction of the OMMT fillers. From the ion-conductivity results, the PCE containing MMT-
20A showed higher conductivity (6.1 × 10−4 S/cm) than that containing Na-MMT (2.2 × 10−4 S/cm).
This indicated that the improved ion conductivity was dependent on the reduced crystallinity that
was correlated with the d-spacing of the MMT. Furthermore, the PCE/OMMT showed improved tensile
strength. Finally, it was shown that the conducting and mechanical properties were dependent on the
interlayer spacing of the modified clays.

Keywords:
Composite electrolytes
Poly(ethylene oxide)
Montmorillonite
Conducting behavior
Interlayer spacing

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Informasi Detail

Judul Seri

Journal of Colloid and Interface Science

No. Panggil

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Penerbit

London : Elsevier Inc.., 2009

Deskripsi Fisik

Journal of Colloid and Interface Science 332 (2009) 145–150

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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