Influence of size reduction of crosslinked rubber particles on phase interface in dynamically vulcanized poly (vinylidene fluoride)/silicone rubber blends |
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| Institution: | 1. The Key Laboratory of Polymer Processing Engineering, Ministry of Education, China (South China University of Technology), Guangzhou, 510640, China;2. College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China;3. School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China;1. The Norwegian University of Science and Technology, Department of Mechanical and Industrial Engineering, Richard Birkelands Vei 2 B, 7034 Trondheim, Norway;2. SINTEF Materials and Chemistry, Forskningsveien 1, 0373 Oslo, Norway;1. Laboratory of Advanced Polymers & Optimized Materials (LAPOM), Department of Materials Science and Engineering, University of North Texas, 3940 North Elm Street, Denton, TX 76207, USA;2. Encore Wire Corp., 1324 Millwood Road, McKinney, TX 75069, USA;1. Department of Material and Commodity Sciences and Textile Metrology, Lodz University of Technology, 90-924 Lodz, Poland;2. Institute of Applied Computer Science, Lodz University of Technology, 90-924 Lodz, Poland;3. University of Social Sciences, 90-113 Lodz, Poland;1. LMS, Ecole Polytechnique, CNRS, Université Paris-Saclay, 91128 Palaiseau, France;2. Laboratoire PIMM, ENSAM, CNRS, CNAM, 151 bd de l’Hôpital, 75013 Paris, France;1. College of Materials Science and Metallurgy Engineering, Guizhou University, Guiyang 550025, Guizhou, People''s Republic of China;2. National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang 550014, Guizhou, People''s Republic of China;3. College of Materials and Metallurgy Engineering, Guizhou Institute of Technology, Guiyang 550003, Guizhou, People''s Republic of China |
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| Abstract: | In this paper, the influence of rubber particle size on the phase interface in dynamically vulcanized poly(vinylidene fluoride)/silicone rubber (PVDF/SR) blends without any modifier is discussed through the studies of specific surface of crosslinked SR particles, crystallization behavior and crystal morphology of the PVDF phase, interfacial crystallization, melt rheological behavior and mechanical properties of blends. A series of decreased average particle size was successfully obtained by control of rotor rate. It was found that properly high rotor rate helped to achieve a reduced particle size and a narrowing size distribution. The reduced SR particle size enlarged the PVDF/SR interface which has a positive effect on the interfacial crystallization and the melt rheological behavior. At high SR content, the negative effect of the poor interface interactions played the dominate role on determining the mechanical properties. However, the blend exhibited a unique stiffness-toughness balance at the PVDF/SR = 90/10. We hope that the present study could help to lay a scientific foundation for further design of a useful PVDF/SR blend with promoted properties to partly replace the high-cost synthetic fluorosilicone materials. |
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| Keywords: | Dynamic vulcanization Poly(vinylidene fluoride)/silicone rubber blend Interfacial crystallization Size reduction Mechanical properties |
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