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Study on uniformity of multi-needle electrostatic spinning by auxiliary flow field
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Multi-needle electrospinning is a simple and general method for mass
preparation of nanofiber membranes, which has great industrial
potential. However, due to the bending instability produced in the
process of electrospinning, the deposition uniformity of the nanofibers
has been very worrying, resulting in uneven nanofiber films, which
seriously affects the batch application of electrospinning films in
environmental filtration, new energy and medical fields. In order to
improve the uniformity of nanofiber deposition in multi-needle
electrospinning, we propose an auxiliary flow field system (AFF), which
can effectively improve the non-uniformity of nanofiber deposition.
After image processing of electrospun nanofiber films, we quantified the
uniformity of fiber deposition with the index of gray distribution, and
verified the effectiveness of this method. Combined with the
multi-physical field analysis of the experimental model, the influence
mechanism of cross-wind field on the uniformity of fiber deposition was
revealed. By optimizing the experimental parameters, the non-uniformity
of nanofiber deposition was reduced by 49. 19%.
Title: Study on uniformity of multi-needle electrostatic spinning by auxiliary flow field
Description:
Multi-needle electrospinning is a simple and general method for mass
preparation of nanofiber membranes, which has great industrial
potential.
However, due to the bending instability produced in the
process of electrospinning, the deposition uniformity of the nanofibers
has been very worrying, resulting in uneven nanofiber films, which
seriously affects the batch application of electrospinning films in
environmental filtration, new energy and medical fields.
In order to
improve the uniformity of nanofiber deposition in multi-needle
electrospinning, we propose an auxiliary flow field system (AFF), which
can effectively improve the non-uniformity of nanofiber deposition.
After image processing of electrospun nanofiber films, we quantified the
uniformity of fiber deposition with the index of gray distribution, and
verified the effectiveness of this method.
Combined with the
multi-physical field analysis of the experimental model, the influence
mechanism of cross-wind field on the uniformity of fiber deposition was
revealed.
By optimizing the experimental parameters, the non-uniformity
of nanofiber deposition was reduced by 49.
19%.
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