PLA/MWNT/HA hybrid nanofibers were prepared via electrospinning technology.Multi walled carbon nanotube (MWNT) were first treated by anodic oxidation,which resulted in various functional groups such as C—O,CO and O—...PLA/MWNT/HA hybrid nanofibers were prepared via electrospinning technology.Multi walled carbon nanotube (MWNT) were first treated by anodic oxidation,which resulted in various functional groups such as C—O,CO and O—CO on the surface of oxidized MWNT.Then the MWNT/hydroxyapatite (HA) nano composites (MWNT content 3?wt%) were in situ synthesized by wet method with the help of ultrasonic treatment.Because of the strong interaction between the functional groups on the surface of MWNT and Ca 2+ in HA,the obtained HA nano particles were deposited onto the surface of oxidized MWNT.The as received MWNT/HA nano composites with excellent biocompatibility and osteoinduction were introduced into a bioabsorbable polymer,polylactide (PLA),and the PLA/MWNT/HA hybrid nanofibers were electrospun through a double solvent method under the voltage of 18 kV and the capillary to target distance was 4?cm.The structure and morphology of hybrid nanofibers were characterized by SEM.Because of the nanoscaled diameters,microscaled interconnected pores and suitable surface chemistry,the hybrid nanofibers would match the requirements of ideal bone tissue engineering scaffold and may be a potential material for preparing bone tissue engineering scaffold.展开更多
Thin PVA/zirconium oxychloride composite fibers were prepared by using sol-gel processing and electrospinning technique. After calcining the above precursor fibers,ZrO 2 nanofibers with a diameter of 70—100 nm were s...Thin PVA/zirconium oxychloride composite fibers were prepared by using sol-gel processing and electrospinning technique. After calcining the above precursor fibers,ZrO 2 nanofibers with a diameter of 70—100 nm were successfully obtained. The ZrO 2 nanofibers were characterized by XRD,TG-DTA,FTIR,and SEM,respectively. The results show that the crystallinity and morphology of ZrO 2 fibers are largely influenced by the calcination temperature.展开更多
文摘PLA/MWNT/HA hybrid nanofibers were prepared via electrospinning technology.Multi walled carbon nanotube (MWNT) were first treated by anodic oxidation,which resulted in various functional groups such as C—O,CO and O—CO on the surface of oxidized MWNT.Then the MWNT/hydroxyapatite (HA) nano composites (MWNT content 3?wt%) were in situ synthesized by wet method with the help of ultrasonic treatment.Because of the strong interaction between the functional groups on the surface of MWNT and Ca 2+ in HA,the obtained HA nano particles were deposited onto the surface of oxidized MWNT.The as received MWNT/HA nano composites with excellent biocompatibility and osteoinduction were introduced into a bioabsorbable polymer,polylactide (PLA),and the PLA/MWNT/HA hybrid nanofibers were electrospun through a double solvent method under the voltage of 18 kV and the capillary to target distance was 4?cm.The structure and morphology of hybrid nanofibers were characterized by SEM.Because of the nanoscaled diameters,microscaled interconnected pores and suitable surface chemistry,the hybrid nanofibers would match the requirements of ideal bone tissue engineering scaffold and may be a potential material for preparing bone tissue engineering scaffold.
文摘Thin PVA/zirconium oxychloride composite fibers were prepared by using sol-gel processing and electrospinning technique. After calcining the above precursor fibers,ZrO 2 nanofibers with a diameter of 70—100 nm were successfully obtained. The ZrO 2 nanofibers were characterized by XRD,TG-DTA,FTIR,and SEM,respectively. The results show that the crystallinity and morphology of ZrO 2 fibers are largely influenced by the calcination temperature.
