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Advanced Electrospinning Our current research: Electrospinning/Electrospraying Combination Nanoparticles
find potential applications in sunscreens, cancer, drug delivery
and decomposition of chemical and biological warfare agents, etc.
However, there is a difficulty in usage of nanoparticles such as
MgO, TiO2 for protective clothing and spillage on instrument and
other surfaces effectively. Hence it is desirable to mount these
nanoparticles on supportive material to use them such applications.
One of the approaches is by mixing nanoparticles with polymer solution,
and then subjecting the solution to electrospinning.4 However, by
this method, the nanoparticles are covered by polymer and aggregation
as well and thereby they are not available on the surface (Figure
1). To overcome this difficulty, deposition of various metal oxide
nanoparticles on nanofiber surfaces was carried out by electrospinning
of nanofibers and electrospraying of nanoparticles (Figure 2). The
study carried out indicates the uniform distribution of nanoparticles
on nanofiber surfaces can be achieved (Figure 3). This is important
for the effective decontamination of chemical agents and biological
toxins such as anthrax, flu virus, etc. when used as protective
suits for paramilitary and medical personnel for the guaranteed
safety.
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Current state-of-the-art electrospinning process involves usage of
organic solvents and mainly restricted to neutral or uncharged polymers.
The organic solvents are costly and toxic, and considered environmentally
unfriendly. Industries adopt detailed secondary processing methods
to recover and treat solvents from the electrospinning machines and
their subsequent disposal. These additional requirements increase the
overall manufacturing cost. The exploration of water soluble polymers
to produce nanofibers will overcome the above mentioned issues and
makes the electrospinning process more eco-friendly. Hence research
is currently focused to electrospin the water soluble polymers. It
is envisaged that this would extend the range of applications of limited
number of water soluble polymer systems. This project is funded by
MOE. |
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For possible collaborations and more enquires on these projects, please contact: Dr Subramanian Sundarrajan nnisubra@nus.edu.sg |
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