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Open AccessArticle

Manufacturing, Characterisation and Mechanical Analysis of Polyacrylonitrile Membranes

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Department of Mechanical Engineering, Imperial College London, Exhibition Road, London SW7 2AZ, UK
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Department of Environmental Engineering, Faculty of Engineering-Architecture, Nevsehir Haci Bektas Veli University, Nevsehir 50300, Turkey
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Faculty of Mechanical Engineering, Istanbul Technical University, Istanbul 34437, Turkey
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Department of Environmental Engineering, Faculty of Engineering, Istanbul University-Cerrahpasa, Avcilar Kampusu, Istanbul 34320, Turkey
*
Authors to whom correspondence should be addressed.
Polymers 2020, 12(10), 2378; https://doi.org/10.3390/polym12102378
Received: 11 September 2020 / Revised: 5 October 2020 / Accepted: 12 October 2020 / Published: 16 October 2020
(This article belongs to the Special Issue Polymer Membranes: Fabrication, Characterization, and Application)
To investigate the effect of polyvinylpyrrolidone (PVP) addition and consequently porosity, two different sets of membranes are manufactured, since PVP is a widely used poring agent which has an impact on the mechanical properties of the membrane material. The first set (PAN 1) includes polyacrylonitrile (PAN) and the necessary solvent while the second set (PAN 2) is made of PAN and PVP. These membranes are put through several characterisation processes including tensile testing. The obtained data are used to model the static behaviour of the membranes with different geometries but similar loading and boundary conditions that represent their operating conditions. This modelling process is undertaken by using the finite element method. The main idea is to investigate how geometry affects the load-carrying capacity of the membranes. Alongside membrane modelling, their materials are modelled with representative elements with hexagonal and rectangular pore arrays (RE) to understand the impact of porosity on the mechanical properties. Exploring the results, the best geometry is found as the elliptic membrane with the aspect ratio 4 and the better RE as the hexagonal array which can predict the elastic properties with an approximate error of 12%. View Full-Text
Keywords: mechanical characterisation; foams; ultrafiltration membrane; finite element method; non-linear deformations mechanical characterisation; foams; ultrafiltration membrane; finite element method; non-linear deformations
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Tüfekci, M.; Durak, S.G.; Pir, İ.; Acar, T.O.; Demirkol, G.T.; Tüfekci, N. Manufacturing, Characterisation and Mechanical Analysis of Polyacrylonitrile Membranes. Polymers 2020, 12, 2378.

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