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Well-aligned fibrous membranes are obtained by using a tip collector as an electrospinning setup.
When the mass ratio of SF to PU was 1/9, there were lots of the beads in the fibrous membrane.
When the mass ratio of SF to PU increased, the microstructure of the blend fibrous membranes transformed from the molten structures to the fibrous membrane with a little bead and to the fibrous membrane composed of the even diameter fibers (Fig.
The pure PU fibrous membrane was almost a molten structure.
The blend fibrous membrane with the mass ratio of SF to PU (5/5) had a stress at peak and Young's modulus equal to one-half of that with the mass ratio of SF to PU (3/7).
Hydrophilicity-Enhanced Fibrous Membrane by Dip-Cowing Process
CRL-2593) MC-3T3-E1 cells were chosen for cell culture tests because hybrid fibrous membranes were mainly used on cementum and bone in dentistry (33), (34).
The structural properties of various ES PLA and PLA/[beta]-TCP fibrous membranes such as the average fiber diameter, pore size, and porosity are listed in Table 1.
The electrospinning process has been studied as a useful method to produce ultrafine fibrous membranes from polymer solutions or melts under a high electric voltage for several years (1-5).
But, in RD the tensile strength and tensile modulus of the membrane with higher fiber alignments prepared at higher collection speeds increased sharply owing to the stronger force existed in true fiber rupture in comparison with those of random fibrous membranes.
It could be accounted for the tighter accumulation of PVDF fibers and the more compaction of fibrous membranes after hot-press.
Aligned electrospun PVDF fibrous membranes were prepared by utilizing a high speed collection drum.
The biomaterials' versatility enables Chu to engineer them into fibers, gels, spherical particles (nano or micron size), and fibrous membranes.
The electrospinning is a straightforward way to produce ultrafine fibrous membranes from polymer solutions or melts under a high electric voltage [1-5].
9% could be retained after hot-press at 130[degrees]C in double layers, whereas it was difficult for diethyl carbonate to be absorbed into the PVDF membranes after they were treated above 145[degrees]C, because the pore of the fibrous membranes was shut off partially by hot-press at high temperatures.