Defination,why do we say electrospinning,other technique,Parameter,Process,material of scaffolds,nanotechnology

1. Topic
Electrospinning

2. Name: Md. Ranas Hossain
Id: 12131107005
Intake: 7th
Program: B.Sc. In Textile Engineering
Bangladesh University of Business & Technology
(BUBT)

3. Electrospinning is a fiber production method which
uses electric force to draw charged threads of
polymer solutions up to fiber diameters in the order
of some ten nanometers. Electrospinning shares
characteristics of both electrospraying and
conventional solution dry spinning of fibers.

4. Mainly used in voltage for this reason we can called
Electrospinning
Usually we shall used 10-50 kv voltage
By Electrospinning process we can produced nano
fiber
1-100nm diameter fibers are nano fiber

6. When a sufficiently high voltage is applied to a liquid
droplet, the body of the liquid becomes charged, and
electrostatic repulsion counteracts the surface tension
and the droplet is stretched; at a critical point a
stream of liquid erupts from the surface. This point of
eruption is known as the Taylor cone. If the
molecular cohesion of the liquid is sufficiently high,
stream breakup does not occur and a charged liquid
jet is formed.

7.  As the jet dries in flight, the mode of current flow
changes from ohmic to convective as the charge
migrates to the surface of the fiber. The jet is then
elongated by a whipping process caused by
electrostatic repulsion initiated at small bends in the
fiber, until it is finally deposited on the grounded
collector. The elongation and thinning of the fiber
resulting from this bending instability leads to the
formation of uniform fibers with nanometer-scale
diameters.

9.  Molecular weight, molecular-weight distribution and
architecture (branched, linear etc.) of the polymer
 Solution properties (viscosity, conductivity and
surface tension)
 Electric potential, flow rate and concentration
 Distance between the capillary and collection screen
 Ambient parameters (temperature, humidity and air
velocity in the chamber)
 Motion and size of target screen (collector)
 Needle gauge

10.  Coaxial Electrospinning
 Melt Electrospinning
 Emulsion Electrospinning

11. Synthetic material
1.Polyacticacid
2.Polyurathene
3.Polycaprolactum
4.Polyactic Glycolic acid
5.Hydrogels
Natural polymer
1.Collagen
2.Alginate
3.Chitosan

12.  Fabrication of nano fibers
 Surface modification
 Nano praticle composite fibers

13.  Artificial organ components Tissue engineering.
 Living cells can be co-deposited with electrospun
material.
 Endogenous Tissue Growth

14.  That’s all of my presentation and thank you
all