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Modification of montmorillonite with aminopropylisooctyl polyhedral oligomeric silsequioxane
journal contribution
posted on 2016-09-13, 10:39 authored by Feng Zhao, Chaoying Wan, Xujin BaoXujin Bao, Balasubramanian KandasubramanianSodium 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.
Funding
The authors gratefully acknowledge the financial support of the UK Department of Trade and Industry/Technology Strategy Board.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Materials
Published in
Journal of Colloid and Interface ScienceVolume
333Pages
164 - 170Citation
ZHAO, F. ... et al., 2009. Modification of montmorillonite with aminopropylisooctyl polyhedral oligomeric silsequioxane. Journal of Colloid and Interface Science, 333 (1), pp.164-170.Publisher
© ElsevierVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2009Notes
Closed access.ISSN
0021-9797Publisher version
Language
- en