i am not getting fibers as much as peeling. but i am getting fibers which i have seen in SEM. could you please help me how to take fibers for characterization?
Hi Charan,
It depends on the material you are forming and the solvent you used. If you try with highly vaporizing solvent mixture you can peal of easily. You can also try to mesh type collector.
All the Best!
Hi Charan
Yes it depends a lot on your solution and process parameter, so you may need to test a few different methods to find the best suited one. On
http://electrospintech.com/fibermemseparation.html#.WBhTbcmTXZ5
you will find some more techniques to try.
Hi Charan,
I agree with some previous answers. Try spinning a thicker fibre membrane which will allow you to peel off a fibre mat, even though you'll still have some fibres stick on your collector. Also try removing fibres after they're properly dried. Using a vacuum desiccator to remove residual solvent can make it easier, at least in my cases. Using non-stick collector is also a good choice though I haven't tried that yet. Good luck!
In addition to spinning a thick mat, you will need a volatile solvent such as TFE. I usually leave the spun fibres on the collector in a fume cupboard overnight and they are easy to take off when properly dry. Also try a wired rotating collector.
I agree with all answer the best option Is produce more time to get a thicker sample. However ,depending the material you are using, you can use a water bath to take the samples out from the collector but is a time consuming process.Other option is change the solvent, probably you are producing fibers with low diameters and consequently occurs high fibres packaging and to obtain a thicker samples you need several hours...best of luck
Hello Charan,
We have tried with non-stick aluminum foil (Reynolds Wrap Release Non-stick Aluminum Foil 12", 35 Sq Ft (Pack of 6) by Reynolds) as collector and it has worked for us. It is a simple yet useful solution at least in our case.
In my experience, how easy is to separate the membrane from the collector depends on the polymer-solvent system being spun and the materials used to cover the collector. We've mostly used tin foil, but some compositions stick too strongly to it and it's difficult to remove without breaking the electrospun membrane. In those cases we've used silicone-coated baking paper, which worked a lot better. However, as some have said, we produce rather thick membranes, which make it easier to remove the samples.
Sorry
Do you want a single oriented fiber?
Electrospinning is impossible to collect by directional
The resulting film was in a nonwoven form
Unless you are using a rotary knife to collect
Otherwise there will be difficulties
good luck
Dear Charan,
In case you don’t care about the thickness of the fibers you can stick to the suggestions of the answers you have already.
If you need/want thin scaffolds try out to dip your scaffold in water or ethanol, in my case (PCL blends) the scaffold detached easily after a few minutes and I dried them afterwards.
Best,
Piotr
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