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Organically modified montmorillonites in UV curable urethane acrylate films |
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| Authors: | Fawn M. Uhl Shing-Chung Wong |
| Affiliation: | a Center for Nanoscale Science and Engineering, North Dakota State University, P.O. Box 5376, Fargo, ND 58105-5376, USA b Department of Mechanical Engineering and Applied Mechanics, North Dakota State University, P.O. Box 5376, Fargo, ND 58105-5376, USA c Department of Polymers and Coatings, North Dakota State University, P.O. Box 5376, Fargo, ND 58105-5376, USA |
| Abstract: | UV curable films were reinforced with an organically modified montmorillonite (MMT). The organically modified MMTs were prepared by an ion exchange process, in which sodium ions were replaced by alkyl ammonium ions. Cetyltrimethylammonium bromide (CTMA) modified clays gave rise to better intercalated clay morphology. The microstructures were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Physical properties were examined by real time infrared spectroscopy (RTIR), differential scanning calorimetry (DSC), photo-DSC, dynamic mechanical thermal analysis (DMTA). Some tensile properties were also reported. Thermal and mechanical properties were generally improved with nanoclay reinforcements. The effects of nanoclays on the properties of UV curable films are critically evaluated in this paper. |
| Keywords: | UV-curing Clay nanocomposite Urethane acrylate |
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