Browsing by Author "Zhang, Hongnan"

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    Analyzing the effect of Nanofiber Orientation on Membrane Filtration Properties with the Progressive increase in its Thickness: a Numerical and Experimental Approach
    (Textile Research Journal, 2020) Akampumuza, Obed; Xu, Huilin; Xiong, Jian; Zhang, Hongnan; Quan, Zhenzhen; Qin, Xiaohong
    One of the merits of modeling is that the computer-generated data is used in optimizing equipment and experimental designs, eliminating the costs associated with scaling up by experimentation. In this work, the filtration performance of nanofibers aligned diversely within virtual webs was numerically analyzed using Star CCM + and Ansys Fluent software. This knowledge was then used to fabricate two distinctly oriented nanofiber membranes via free surface electrospinning. Their filtration performance was studied by capillary flow porometry technology using POROLUXTM 100. The results of this were in agreement with the simulation work.
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    Raising Nanofiber Output: The Progress, Mechanisms, Challenges, and Reasons for the Pursuit
    (Macromolecular Materials and Engineering, 2018) Akampumuza, Obed; Gao, Hanchao; Zhang, Hongnan; Wu, Dequn; Qin, Xiao-Hong
    The paper discusses the extent to the scale of the electrospun fiber membrane. Literatures show that two distinct methods of raising electrospun nanofiber production can be employed via spinning from a setup of multiple nozzles arranged side by side or from an expanse of polymer solution (needleless electrospinning). Both of these methods are thoroughly explored by considering the variations available within either of their respective productivities. Their mechanisms are duly dealt with by looking at principles and parameters behind the process performances and an analysis of the strategies devised to deal with the shortcomings and ensure process feasibility is given. It has to be noted that most of the available work on electrospinning and their applications is achieved via single needle electrospinning. In this review, a projection is taken to be accomplished whether the nanofiber production can be consistently raised to commercial levels at the exceptional application routes so far produced by the conventional electrospinning means.