Multifunctional and environmentally friendly nanocomposites between natural rubber and graphene or graphene oxide |
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| Affiliation: | 1. Departamento de Química, Universidade Federal do Paraná (UFPR), Curitiba, PR, Brazil;2. Instituto de Química, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil;1. Chinese Agricultural Ministry Key Laboratory of Tropical Crop Product Processing, Agricultural Product Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001, PR China;2. Institute for Frontier Materials, Deakin University, Waurn Ponds, Geelong, VIC 3216, Australia;1. School of Chemical Sciences, Mahatma Gandhi University, Kottayam 686 560, Kerala, India;2. School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Republic of Korea;3. Department of Chemical Engineering, Soongsil University, Seoul 156-743, Republic of Korea;4. Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam 686 560, Kerala, India;5. Polymer Laboratory, Dielectric Materials Division, Central Power Research Institute, Bangalore 560080, India;1. School of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China;2. State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China;3. Xi’an Modern Chemistry Research Institute, Xi’an, Shaanxi 710000, China;1. Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China;2. Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, Nanjing Institute of Technology, Nanjing 211167, China;3. Department of Chemistry, Xi''an Jiaotong-Liverpool University, Suzhou 215123, China;4. Key Laboratory of C & PC Structures of Ministry of Education, Southeast University, Nanjing 210096, China |
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| Abstract: | This work describes a green route to multifunctional nanocomposite materials composed of natural rubber (NR) latex and graphene (rGO) or graphene oxide (GO). Aqueous solutions with different concentrations of GO and rGO (prepared with the surfactant cetyltrimethylammonium bromide – CTAB) were mixed with natural rubber latex under magnetic stirring followed by sonication. The slurries obtained after casting were dried in an oven in air at 70 °C for 24 h. The nanocomposites were characterized by TEM and SEM, AFM and KFM. The thermal, electrical and mechanical properties were evaluated using TGA, resistivity measurements (four-point) and DMA. Swelling tests were performed using three solvents with different polarities: xylene, isopropanol and water. The inclusion of filler networks in the polymeric matrices provided significant improvements in the electrical, chemical and mechanical properties, in comparison to the unfilled polymer. In addition, the nanocomposites proved to be biodegradable. |
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