Modify of Thermoplastic Soy Protein Isolated by Methyl Methacrylate

摘要

Thermoplastic soy protein isolated (T-SPI) was synthesized by graft copolymerization of methyl methacrylate (MMA) onto soy protein isolated (SPI). T-SPI and SPI were characterized by means of FTIR, DSC, TG and so on. The results showed that the monomers were grafted onto the SPI successfully. Compared with SPI, T-SPI improved its thermal stability markedly, and appeared a glass transition at 124 ¡ãC. The introduced monomers could make the rigidity decreased obviously, which made the materials more flexible and fluid in processing from the result of Torque rheometer. In a word, the T-SPI was a good thermoplastic and stability material.