Thermal behavior,dynamic mechanical properties and rheological properties of poly(butylene succinate) composites filled with nanometer calcium carbonate |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, People''s Republic of China;2. Hubei Key Laboratory of Advanced Textile Materials & Application, Wuhan Textile University, Wuhan, 430200, People''s Republic of China;1. Electromechanical Systems Laboratory LASEM, National Engineering School of Sfax, University of Sfax, Soukra km 4, 3038 Sfax, Tunisia;2. Laboratory of Molecular Biotechnology of Eucaryotes, Centre of Biotechnology of Sfax, University of Sfax, Sidi Mansour, PB “1177”, 3018 Sfax, Tunisia;3. Laboratory of the Research Group in Sciences for the Engineer, University of Reims Champagne-Ardenne, 3 Esplanade Roland Garros, 51100 Reims, France;1. Polymer Science and Technology Graduate Program, Kocaeli University, 41380, Kocaeli, Turkey;2. Department of Chemical Engineering, Kocaeli University, 41380, Kocaeli, Turkey |
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| Abstract: | PBS/nano-CaCO3 composites with various nano-CaCO3 weight fractions were prepared by melt blending. The thermal behavior, dynamic mechanical properties and rheological properties of the composites were investigated. DSC measurements revealed that the nano-CaCO3 particles had little influence on the crystallization and melting behavior of PBS. Thermogravimetric analysis showed that the introduction of nano-CaCO3 tended to improve the thermal stability of PBS. Dynamic mechanical analysis showed that the G′ and G″ of the PBS/nano-CaCO3 composites were improved significantly when the nano-CaCO3 content was not more than 3wt%, while the G′ and G″ were mainly decided by the PBS matrix when the nano-CaCO3 content exceeded 3wt%. Rheological results showed that G′ < G″ over the frequency range, illustrating the viscous behavior of the samples. The η* of all the samples remained almost constant when the frequency was not more than 0.25 rad/s, which showed the characteristic of a Newtonian fluid. A strong shear thinning effect was observed for all the samples when the frequency exceeded 0.25 rad/s. Furthermore, the microstructure and the relaxation mechanism of the PBS/nano-CaCO3 composites mainly depended on the PBS matrix. |
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| Keywords: | Poly (butylene succinate) Nanometer calcium carbonate Composites Rheological properties |
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