Investigation of structure-performance properties of a special type of polysulfone blended membranes

Date

2018-10-01

Author

Mahmoudian, Mehdi
Ghasemi Kochameshki, Mahmoud
Mahdavi, Hossein
Vahabi, Henri
Enayati, Mojtaba

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

132
views

0
downloads

Membranes require superior mechanical strength due to applied harsh conditions. The mechanical properties of membranes decrease with increasing hydrophilicity of its elements. In this study, mechanical properties were investigated for two special blended membranes which were made by blending polysulfone with (polysulfone-g-poly (n-butylacrylate) and polysulfone-g-poly (tert-butylacrylate) as components. All of the prepared membranes were characterized by differential scanning calorimeter, thermal gravimetric analysis, field emission scanning electron microscope, and atomic electron microscope and were investigated in terms of pure water flux, water contact angle, molecular weight cut off, and morphology. It was found that water contact angle decreased from 73.6 degrees which belongs to neat membrane decreased to 46 degrees for blended membranes containing higher amounts of copolymers; however, the pure water flux increased with increasing copolymer content considerably compared with the neat membrane. Also, molecular weight cut off increased aggressively. Furthermore, mechanical properties including tensile strength, Young modulus, and elongation at break were measured and compared with the neat polysulfone membrane. Results showed that the tensile strength and modulus decreased with an increase in the copolymers content, despite the increase in the elongation at break. The effect of applied pressure on the membrane structure and also bursting strength were studied, and it has been proved that not only the structure of the membranes but also their performance is strongly affected by the composition of the membranes.

Subject Keywords

Antifouling, Blended membranes, Hydrophilic additive, Mechanical properties, Antifouling, Blended membranes, Hydrophilic additive, Mechanical properties

URI

https://hdl.handle.net/11511/90413

Journal

POLYMERS FOR ADVANCED TECHNOLOGIES

DOI

https://doi.org/10.1002/pat.4395

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

Development of Nanostructured Metallic Glasses with High Toughness Bagheri Behboud, Ali; Özerinç, Sezer; Department of Mechanical Engineering (2021-8) Metallic glasses are metallic alloys with disordered atomic structures and desirable mechanical properties such as high hardness, high elastic limits, and wear resistance. These properties make metallic glasses promising materials for wear-resistant, corrosion-resistant, and biocompatible coating applications. On the other hand, metallic glasses are brittle, which is a major disadvantage for their use in practice. This thesis study aimed to tackle this problem through the development of nanostructured metal...
An investigation on dynamic contact parameters in machining center spindle tool assemblies Özşahin, Orkun; Özgüven, Hasan Nevzat; Department of Mechanical Engineering (2008) In machining centers, with the increasing trends in high precision machining, chatter has become an important problem which results in poor surface finish and low material removal rate. Chatter can be avoided with stability diagrams which provide the stable regions in the machining process for the depth of cut and spindle speed combinations. In order to obtain stability diagrams, tool point frequency response function (FRF) of the system should be obtained. Throughout this study, contact parameters which ar...
Investigating the effects of hardening of aluminium alloys on equal-channel angular pressing-A finite-element study Karpuz, P.; Simsir, C.; Gür, Cemil Hakan (Elsevier BV, 2009-03-15) Equal-channel angular pressing (ECAP) is a promising severe plastic deformation method for production of ultrafine-grained bulk metals and alloys with considerably improved mechanical properties. In this study, numerical experiments were carried out to investigate the effect of strain hardening of aluminum alloys on the process performance of ECAP via finite element modeling. In the constitutive model, isothermal-plane strain, frictionless condition was assumed. The numerical results showed that strain hard...
Characterization of ultra-fine grained steel samples produced by high pressure torsion via magnetic barkhausen noise analysis Bayramoğlu, Sadık; Gür, Cemil Hakan; Department of Metallurgical and Materials Engineering (2009) High Pressure Torsion (HPT) is one of the most widely used severe plastic deformation methods which enable to obtain a crack free ultra-fine grained bulk material with improved mechanical properties like increased strength and toughness. In the process, a disc shaped sample is pressed between two anvils and deformed via surface friction forces by rotating one of the anvils. The aim of this study is to nondestructively characterize the variations in the deformation uniformity of the severely deformed steel d...
Vibration fatigue analysis of structures installed on air platforms Eldoğan, Yusuf; Ciğeroğlu, Ender; Department of Mechanical Engineering (2012) Although a component satisfies all operating static requirements, failures can still occur due to vibration induced fatigue. Vibration induced fatigue is a frequent phenomenon, in cases where the natural frequencies of the structures are excited by the loading. Hence, the methods which consider all dynamic characteristic of the structure should be used to obtain accurate fatigue life predictions. These methods in frequency domain are called vibration fatigue methods which give accurate, reliable and fast re...

Citation Formats

M. Mahmoudian, M. Ghasemi Kochameshki, H. Mahdavi, H. Vahabi, and M. Enayati, “Investigation of structure-performance properties of a special type of polysulfone blended membranes,” POLYMERS FOR ADVANCED TECHNOLOGIES, pp. 2690–2700, 2018, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/90413.