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UV curable epoxy acrylate-clay nanocomposites |
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| Authors: | Fawn M Uhl Siva Prashanth Davuluri |
| Institution: | a Center for Nanoscale Science and Engineering, North Dakota State University, 1805 NDSU Research Park Drive, Fargo, ND 58105, United States b Department of Coatings and Polymeric Materials, North Dakota State University, 1735 NDSU Research Park Drive, P.O. Box 5376, Fargo, ND 58105, United States c Department of Mechanical Engineering and Applied Mechanics, North Dakota State University, Dolve 111, P.O. Box 5285, Fargo, ND 58105, United States |
| Abstract: | UV curable epoxy acrylates were reinforced with two different organically modified montmorillonites (MMTs) and an unmodified MMT. Conversion and rate of polymerization was monitored by real time infrared spectroscopy (RTIR) and photo-DSC. Microstructures were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and optical clarity. Optical clarity of the films containing clay was quite good as only a slight decrease was observed. Physical properties of the reinforced films were examined by differential scanning calorimetry (DSC), dynamic mechanical thermal analysis (DMTA), hardness and tensile testing. Enhancements in glass transition temperature (Tg), thermal stability and mechanical properties were observed. The films reinforced with the unmodified MMT exhibit the most significant enhancements in properties. |
| Keywords: | Epoxy acrylate UV curing Clay nanocomposites |
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