Actually I want to peel off my polystyrene film from the aluminium foil without any disturbance of the fiber structure. But when I tried to peel it off, it became disturbed, because its like cotton. Then how can I separate this? Please help....
Sigma Akter
Salam Alaikum
I think, you can peel off of polystrene film from the aluminium foil, by repeating process, of cooling and warming of the sample.
I meaning in state the adhesion of polystyrene film on aluminium, you can separate it, via depending on thermal changing of the two materials. that is leading to separating between them.
It may help to cut your sample from both the aluminum and fibrous layers. Depending on your characterization method, you could use the aluminum as a substrate, or you could use the cut edge to remove the fibrous mat with less disturbance of the fibers. It will also help to spin a thicker mat to make it more handle-able. Thermal cycling would normally be a good way to remove polystyrene from aluminum, but I don't know that it will help in this case as the fibers are probably not rigid enough.
Yah.. My samples are not rigid enough. I want to use BET, CA, FESEM and FTIR for characterization. I think, for BET, I need to separate the polystyrene film from the aluminium foil. But I am not sure that, for measuring the porosity it's effective or not. Can u please suggest me anything for this case... @ Britannia Vondrasek
Sigma Akter, for FESEM and (ATR)FTIR you probably don't need to remove the fibers from the aluminum at all. I'm not sure what you mean by CA as a characterization method.
BET sorptometry measures surface area, not porosity. Also, your material is fibrous, not porous. You need to consider your intended application when choosing characterization methods so I can't tell you whether BET is the right choice or not. I also don't have a good feel for whether BET will be effective for polystyrene fibers. You may run into issues with the small molecule absorbing rather than adsorbing. Because it just measures surface area, I don't think it should affect your result too much if you disturb the structure of the fibrous mat, as long as you don't have significant fiber breakage. If surface area is what you are looking for, I would probably try to measure the density of the mat using gas pycnometry or similar, characterize the average fiber diameter with microscopy, and then combine the two for a surface area estimate. Then you could compare to your BET measurement as a sanity check.
Sigma Akter
I say, the research aim is imperative in specifying tests type which required.
Dear Sigma Akter You can try to make a very high thickness film. The thicker the membranes, the easier it will be to detach the membrane from the aluminum foil.
If possible, you can tune with your solvent. methyl ethyl ketone and Dichloromethane are a good try for successful electrospinning of PS.
- Badges
- Science method