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Author(s): |
Guangheng Wang, College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an, China
Anning Zhou, College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an, China |
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Abstract: |
Using soy protein isolate (SPI), lignite (LC) as raw materials, glycidyl methacrylate (GMA) as the interface modifiers, glycerol (Gly) as plasticizers, LC-SPI composites were prepared by compression molding. The effects of LC content, GMA content and modification methods on mechanical properties of LC-SPI composites were investigated by the analysis of bending property, impact property, tensile property, fourier transform infrared spectrometer (FTIR) and scanning electron microscope (SEM). The results showed that, the tensile strength, bending strength, and bending modulus of SPI plasctic could be improved by adding LC, but the elongation at break and impact strength decreased. With 10 wt% LC, LC－SPI composites were toughened by using less than 3 % GMA. When GMA content exceeded 3 %, LC－SPI composites were still strengthen, but the toughness and ductility of the composites decreased drastically. Both the compatibility and mechanical properties of LC－SPI composites were improved by adding GMA.
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