پديد آورندگان :
Lin Yi نويسنده , Chi Lei نويسنده , Yao Yongyi نويسنده , Wu Da-Cheng نويسنده
چكيده لاتين :
POly(ethYlene terephthalate) (PET) nanofibres were prepared by gas-jeVelectrospinning
of its solution of 15 wt% concentration in the mixture of phenol and
1,1,2,2-tetrachloroethane (SO/50, w/w). The morphologies of gas-jeVelectrospun
fibres collected on a clean stainless steel plate and three different coagulation baths
were observed under a scanning electron microscope. These coagulants were water,
ethanol and the mixture of water and ethanol : SO/50 (v/v) . Preliminary study on the
effect of different coagulation baths as collector on the morphology of gas-jeVelectrospun
PיET nanofibres was carried out. In particular, on the surface of the fibres obtained
from the water coagulation bath, many short branches appeared. The beaded fibres
were evident in the SEM image of the PET nanofibres collected in an ethanol bath.
Smooth fibres without bead can be obtained using mixture of water and ethanol : SO/50
(v/v) as the coagulation bath. The average diameters of fibres collected in water,
ethanol and water/ethanol bath , were 87, 105 and 84 nm, respectively. Compared with
the average diameter (90 nm) of fibres collected on a metal plate , the diameter of fibres
collected in water and water/ethanol coagulation baths decreased, while the diameter
of fibres collected in ethanol bath increased. Among three coaqulants, the morphology
and the average diameter of PET nanofibres collected in the mixture of water and
ethanol was best and thinnest, respectively.
