The experimental data obtained from fast heating FTIR spectroscopy have confirmed that a conformational change occurs at about 135 ℃ for semicrystalline iPP. Based on the results of density and WAXD measurements, it ...The experimental data obtained from fast heating FTIR spectroscopy have confirmed that a conformational change occurs at about 135 ℃ for semicrystalline iPP. Based on the results of density and WAXD measurements, it can be inferred that the conformational change occurring at 135 ℃ comes from the disordering of helical sequences in non crystalline phase, which is further corroborated by the FTIR study on the chloride polypropylene.展开更多
Photosensitive polyimide/titania hybrid was prepared successfully by sol gel process. This hybrid material posseses a good photolithographic property under UV exposure. The introduction of titania leads to the increas...Photosensitive polyimide/titania hybrid was prepared successfully by sol gel process. This hybrid material posseses a good photolithographic property under UV exposure. The introduction of titania leads to the increase in refractive index of the hybrid.展开更多
文摘The experimental data obtained from fast heating FTIR spectroscopy have confirmed that a conformational change occurs at about 135 ℃ for semicrystalline iPP. Based on the results of density and WAXD measurements, it can be inferred that the conformational change occurring at 135 ℃ comes from the disordering of helical sequences in non crystalline phase, which is further corroborated by the FTIR study on the chloride polypropylene.
文摘Photosensitive polyimide/titania hybrid was prepared successfully by sol gel process. This hybrid material posseses a good photolithographic property under UV exposure. The introduction of titania leads to the increase in refractive index of the hybrid.
