Researching Progress on Supercritical CO_2 Assisted Solid Phase Graft Modification of Polypropylene

Several techniques could be used for polypropylene modification,in which supercritical CO2 assisted solid phase grafting was considered to be a high-efficient and energy-conserving method.Latest advances in the research of supercritical CO2 assisted grafting modification of polypropylene were reviewed.The influences of different factors of supercritical CO2 were introduced.The parameters of solid phase grafting modification of polypropylene system were also discussed.In detailed,the purification and characterization of PP after being modified were summarized,the application of grafting-products were described also.