@@UGentTextiles Hi, Have you tried supercritical fluids in autoclave for a good cleaning of plastic waste. Or water and detergents cleaning will be enough?
It’s a ‘separating funnel’, a relatively normal piece of chemistry glassware, with a DIY nanofiber membrane holder at the end. This is mainly used for demonstration purposes.
What residues are present post filtration? Are the fibers carcinogenic? Are the fibers digestible? Are the fibers metabolized by humans/animals/plants?
The residues will depend on what you are filtering and which type of membrane used. You can find many articles on this topic. As for the other questions, we produce nanofibres from non-toxic polymers using non-toxic solvents. So no carcinogenic risks in these cases. Depending on the type of polymer used, they can also biodegrade. There is a huge range in materials that can be turned into nanofiber membranes, and as such, the right one should be selected depending on the application.
There are multiple providers of chemicals/polymers for labs. We often buy small amounts of polymer pellets at Sigma Aldrich for example. You could also look for polymer manufacturers in your area and ask if they can provide a small sample bag, this is usually no problem.
This is really a very vague question. The conditions depend on which material is used, which solvent, ... You can always look up the papers of our department. Or papers about electrospinning in general.
One of our research topics is indeed filtration through nanofibrous membranes. So far, we haven’t done any blood filtering, but recently published a paper about separation of heterogeneous azeotropes (onlinelibrary.wiley.com/doi/full/10.1002/adfm.201804138 ). In general nanofibrous membranes can be used for micro- and ultrafiltration, but extensions can be made via functionalizations.
We have used electrospun nanofibers for filtration made from polyamides, particle-modified polymers as well as highly resistant silica fibres. You can find our publications on this topic on biblio.ugent.be/person/F4C9EBE8-F0ED-11E1-A9DE-61C894A0A6B4 .
Yes, electrospun nanofibers have been used for tissue engineering in many biomedical applications. Their structure is somewhat similar to the natural structures in our bodies and suited for scaffolding.
Hi, i just started my master research i will work on producing of nanofiber by electrospining, actually i don't know how to prepare solution can u please tell me how to make solution for electrospining, by the way i'm using polyurethane as a solute and DMF as a solvent.. and thanks
You will have to dissolve your polymer in a solvent and then optimize the solution parameters for electrospinning. Literature can help you in finding the right solution parameters. Make sure you take correct safety precautions when working with chemicals.
We are working with many different polymers, including for example polyamides, poly(2-oxazoline)s, poly(e-caprolactone)s, polyvinylpyrrolidones, silica’s, organo-silica’s, biopolymers like chitosan, poly(N-isopropyl acrylamide)s, etc. as well as polyvinylalcoholes. You can find our publications on biblio.ugent.be/person/F4C9EBE8-F0ED-11E1-A9DE-61C894A0A6B4
@@bellatapia2052 We have used electrospun nanofibers for filtration made from polyamides, particle-modified polymers as well as highly resistant silica fibres. You can find our publications on this topic on biblio.ugent.be/person/F4C9EBE8-F0ED-11E1-A9DE-61C894A0A6B4 .
¡Amazing! Have you ever use instead of polymers some other materials?. I´m a Doctoral student and I am interested in the developmen of nanofibers with proteic solutions and see if it can be used in food industry?. Please let me know if Is there a possibility to do an exchange or an study stay with you, I'll be so glad.
I am doing my PhD research relevant to application of this technique. We are looking for the applications of electrospinning in sustainable coatings. (every one is welcomed to collaborate)
have you ever tried to deposit metal ion doped polymer solution?If yes please tell me how did you fixed problems arising in that case.
How to clean the plastic waste before going for electrospinning? Does it require any special cleaning technique or detergent and water is enough?
Preferably the plastics are cleaned or virgin. If they are not, cleaning might be necessary, e.g. water and detergent.
@@UGentTextiles Hi, Have you tried supercritical fluids in autoclave for a good cleaning of plastic waste. Or water and detergents cleaning will be enough?
@@ShahzaibKhan-r3w We haven't done that as we work with clean materials from the start. We would suggest looking for relevant literature on the topic.
What is that equipment used in filtration at 1:35 called?
It’s a ‘separating funnel’, a relatively normal piece of chemistry glassware, with a DIY nanofiber membrane holder at the end. This is mainly used for demonstration purposes.
color sensors? subscribed.
What residues are present post filtration? Are the fibers carcinogenic? Are the fibers digestible? Are the fibers metabolized by humans/animals/plants?
The residues will depend on what you are filtering and which type of membrane used. You can find many articles on this topic. As for the other questions, we produce nanofibres from non-toxic polymers using non-toxic solvents. So no carcinogenic risks in these cases. Depending on the type of polymer used, they can also biodegrade. There is a huge range in materials that can be turned into nanofiber membranes, and as such, the right one should be selected depending on the application.
Hi! May I ask where can I purchase a polymer pellet the one that you used in this video? I'm from the Philippines, a young researcher. Thank you!
There are multiple providers of chemicals/polymers for labs. We often buy small amounts of polymer pellets at Sigma Aldrich for example. You could also look for polymer manufacturers in your area and ask if they can provide a small sample bag, this is usually no problem.
Interesting video
Electrospun PVDF-carbon membranes preparation for water filtration. Pls watch our video
ua-cam.com/video/VoBOMrVbDyU/v-deo.html
Awesome work, May I know the operating conditions for electrospinning
This is really a very vague question. The conditions depend on which material is used, which solvent, ... You can always look up the papers of our department. Or papers about electrospinning in general.
Can this technique (electrospinning) used to make semipermeable membrane which can be used to filter impure blood?
One of our research topics is indeed filtration through nanofibrous membranes. So far, we haven’t done any blood filtering, but recently published a paper about separation of heterogeneous azeotropes (onlinelibrary.wiley.com/doi/full/10.1002/adfm.201804138 ). In general nanofibrous membranes can be used for micro- and ultrafiltration, but extensions can be made via functionalizations.
that gradient at 2:10
Awesome vid
What solution did you use for the air filtration?
We have used electrospun nanofibers for filtration made from polyamides, particle-modified polymers as well as highly resistant silica fibres. You can find our publications on this topic on biblio.ugent.be/person/F4C9EBE8-F0ED-11E1-A9DE-61C894A0A6B4 .
Great job
Just add plane.
can this technique can be used for Annulus Fibrosus repair in disc herniation?
Yes, electrospun nanofibers have been used for tissue engineering in many biomedical applications. Their structure is somewhat similar to the natural structures in our bodies and suited for scaffolding.
@@UGentTextiles did someone use it or annulus fibrosis repair?
of course in human:)
@@UGentTextiles does it work on humans herniation disc?
@@janmiedza6607 We have not looked into that specific case at our lab, but a literature research might lead you to better answers for your questions
How to join this great opportunity and challenges as a Doctoral student?
If you are interested in PhD research at our department, please contact textiles@ugent.be
Is there a possibility to do an internship ?. I'm interested in developing cellulose nanofibers using green solvents for environmental remediation.
Please send your request by e-mail to textiles@ugent.be
Hi, i just started my master research i will work on producing of nanofiber by electrospining, actually i don't know how to prepare solution can u please tell me how to make solution for electrospining, by the way i'm using polyurethane as a solute and DMF as a solvent.. and thanks
You will have to dissolve your polymer in a solvent and then optimize the solution parameters for electrospinning. Literature can help you in finding the right solution parameters. Make sure you take correct safety precautions when working with chemicals.
@@UGentTextiles Is there any way through which can we estimate the optimal parameters
are the polymers used here are polyvinyl alcohols or something else ?
We are working with many different polymers, including for example polyamides, poly(2-oxazoline)s, poly(e-caprolactone)s, polyvinylpyrrolidones, silica’s, organo-silica’s, biopolymers like chitosan, poly(N-isopropyl acrylamide)s, etc. as well as polyvinylalcoholes. You can find our publications on
biblio.ugent.be/person/F4C9EBE8-F0ED-11E1-A9DE-61C894A0A6B4
@@UGentTextiles what polymers did you use for filtration?
@@bellatapia2052 We have used electrospun nanofibers for filtration made from polyamides, particle-modified polymers as well as highly resistant silica fibres. You can find our publications on this topic on biblio.ugent.be/person/F4C9EBE8-F0ED-11E1-A9DE-61C894A0A6B4 .
¡Amazing! Have you ever use instead of polymers some other materials?. I´m a Doctoral student and I am interested in the developmen of nanofibers with proteic solutions and see if it can be used in food industry?. Please let me know if Is there a possibility to do an exchange or an study stay with you, I'll be so glad.
Electrospun PVDF-carbon membranes preparation for water filtration. Pls watch our video
ua-cam.com/video/VoBOMrVbDyU/v-deo.html
Are there any possibility for an internship at your research group?
please send an email to textiles@ugent.be
I am doing my PhD research relevant to application of this technique. We are looking for the applications of electrospinning in sustainable coatings. (every one is welcomed to collaborate)
IMPRESSIVE!
sexy