Modification with tertiary amine catalysts improves vermiculite dispersion in polyurethane via in situ intercalative polymerization
| Autor: | Wenhao Liu, Chris Ian Lindsay, Christopher W. Macosko, R. E. Camargo, Yuqiang Qian, Yong Tae Park, Andreas Stein |
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| Rok vydání: | 2012 |
| Předmět: |
inorganic chemicals
chemistry.chemical_classification Materials science Nanocomposite Polymers and Plastics Tertiary amine Organic Chemistry Vermiculite complex mixtures Catalysis chemistry.chemical_compound Polyol chemistry Polymerization Polymer chemistry Materials Chemistry Dispersion (chemistry) Polyurethane |
| Zdroj: | Polymer. 53:5060-5068 |
| ISSN: | 0032-3861 |
| DOI: | 10.1016/j.polymer.2012.09.008 |
| Popis: | In situ intercalative polymerization is an environmentally-friendly process to produce polymer-clay nanocomposites with good clay dispersion. In this work, quaternary ammonium salts with tertiary amine groups were synthesized to modify clay as catalytically active modifiers for polyurethanes. Polyol dispersions with the catalyst-modified vermiculites were prepared by ultrasonication and examined by X-ray scattering and rheology. In the polyurethane elastomers synthesized from the above dispersions in a solvent-free process, X-ray scattering showed that the clay was highly intercalated/exfoliated without noticeable peaks for d 2 permeability at a loading of 5.3 wt% of catalyst-modified clay. |
| Databáze: | OpenAIRE |
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