In this study, Ultra High Performance Electrospray Ionization Ion Trap Time of Flight Mass Spectrometry （UHPLC-ESI-1T-TOF MS） method is used to screen the polymer additives in drinking water that is stored in Polyet...In this study, Ultra High Performance Electrospray Ionization Ion Trap Time of Flight Mass Spectrometry （UHPLC-ESI-1T-TOF MS） method is used to screen the polymer additives in drinking water that is stored in Polyethylene Terephthalate （PET） bottles. After directly analyzing the commercially available water samples, 3 polymer additives （chimassorb 81, irgafos 168 and oleamide） were detected. However, after exposure to sunshine for 8 days, two additional polymer additives （antioxidant 2246 and Butylated Hydroxytoluene （BHT）） were detected besides the former three additives.展开更多
DSC, WAXD and POM were performed on the structures and morphology of a blend system being composed of PET, PEN and nucleating agent(DBS). It is concluded that the crystallization of the blends is dependent on the cont...DSC, WAXD and POM were performed on the structures and morphology of a blend system being composed of PET, PEN and nucleating agent(DBS). It is concluded that the crystallization of the blends is dependent on the contents of PET and the nuclenting agent, which affect the morphology of the blends. Under certain conditions, the blends show a complex extinction pattern, with the black cross extinction accompanying black homocentric zone and fireworks scattering form, rather than that of the common spherulite.展开更多
文摘In this study, Ultra High Performance Electrospray Ionization Ion Trap Time of Flight Mass Spectrometry （UHPLC-ESI-1T-TOF MS） method is used to screen the polymer additives in drinking water that is stored in Polyethylene Terephthalate （PET） bottles. After directly analyzing the commercially available water samples, 3 polymer additives （chimassorb 81, irgafos 168 and oleamide） were detected. However, after exposure to sunshine for 8 days, two additional polymer additives （antioxidant 2246 and Butylated Hydroxytoluene （BHT）） were detected besides the former three additives.
文摘DSC, WAXD and POM were performed on the structures and morphology of a blend system being composed of PET, PEN and nucleating agent(DBS). It is concluded that the crystallization of the blends is dependent on the contents of PET and the nuclenting agent, which affect the morphology of the blends. Under certain conditions, the blends show a complex extinction pattern, with the black cross extinction accompanying black homocentric zone and fireworks scattering form, rather than that of the common spherulite.
