e-journal

Modification of montmorillonite with aminopropylisooctyl polyhedral oligomeric silsequioxane

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Abstract.
Sodium montmorillonite (Na-MMT) was modified with various amounts of aminopropylisooctyl polyhedral
oligomeric silsequioxane (POSS) and a second surfactant (alkyl ammonium based) via ionexchange
reactions. Interlayer spacing, interlamellar structure, and thermal and surface properties of
these organoclays were characterized by wide angle X-ray diffraction, thermogravimetric analysis, and
contact angle measurement. The interlayer space of POSS-modified clay (POSS-MMT) was strongly
dependent on the arrangement of POSS surfactant but less dependent on the POSS concentration.
The sodium ions in Na-MMT were only partially exchanged by protonized POSS due to the steric
hindrance effect. In addition, the dual-surfactant-modified clays exhibited increased exchange ratios by
controlling the amount of the second surfactant, resulting in a good balance in hydrophobicity and
polarity of the modified clays. The resultant organoclays were mixed with polypropylene (PP) via a meltcompounding method. It was found that the dual-surfactant-modified clays with low polarity and similar
hydrophobicity to PP were well dispersed in the PP matrix.

Keywords:
Montmorillonite
Dual surfactant
Interlayer spacing
Thermal stability
Dispersion

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Ketersediaan

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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 333 (2009) 164–170

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

Versi lain/terkait

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