Influence of solvents on spinnability and thermal property of PVAc/SnO_2 hybrid nanofibers

Ultrasonic-assisted hydrolysis method was applied to prepare Sn(OH)4 hydrosol,and hybrid nanofibers were fabricated by electrospinning a mixture of PVAc and Sn(OH)4 hydrosol in different cosolvents,such as methanol,methanol/ ethanol or acetone.The influence of different solvents on the nanofiber forming and influence of the addition of SnO2 on the thermal property of PVAc were investigated by morphologic observation,Fourier transform infrared spectrum analysis and thermo gravimetric measurement.The experimental results revealed that the most stable PVAc/SnO2 system was in methanol/ethanol cosolvent,and addition of Sn(OH)4 obviously improved the morphology of PVAc nanofiber with the mass of 8% PVAc fraction.The nanofiber was uniform and smooth,without slub.Hydrogen bonding was observed between PVAc and SnO2.The addition of Sn(OH)4 improved the thermal stability of PVAc whose highest thermal decomposition temperature was up to 150 ℃.