Unsaturated polyester/bentonite nanocomposites: Influence of clay modification on final performance |
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| Affiliation: | 1. The College of Chemical Engineering, Northeast Dianli University, Jilin, Jilin 132012, China;2. Pulp and Paper Research Center of College of Textiles & Clothing, Jiangnan University, Wuxi, Jiangsu 214122, China;3. Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science & Technology, Tianjin 300222, China;4. Limerick Pulp and Paper Centre, University of New Brunswick, Fredericton, NB E3B 5A3, Canada |
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| Abstract: | In this work, unsaturated polyester/bentonite nanocomposites were obtained and characterized. The bentonite used was unmodified and with different chemical treatments. The effects of these different chemical modifications (cation exchange reactions with quaternary ammonium and phosphonium salts) of this clay as well as the effect of clay content on the thermal, barrier (water absorption), mechanical (flexural) and dynamic-mechanical properties of unsaturated polyester matrix were analyzed. The results clearly show that the chemical modifications of the clay cause a desired effect on its final properties improving the performance of the nanocomposites. The enhancements could be directly related to the dispersion of the clay inside the matrix, as shown by transmission electron microscopy. |
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