Properties of Polysulfone/Halloysite Nanocomposite Membranes: Prepared by Phase Inversion Method

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• 作者：Swapna V.P. ; Saranya E.P. ; Nithya A.B. ; Sabu Thomas and Ranimol Stephen
• 关键词：halloysite nanotubes ; nanocomposites ; polysulfone ; PSU-HNT interaction ; wet phase inversion
• 刊名：Macromolecular Symposia
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：361
• 期：1
• 页码：11-19
• 全文大小：328K
• ISSN：1521-3900

文摘

Organically modified halloysite nanotube (HNT) containing polysulfone (PSU) membranes were fabricated by the wet phase inversion method. Organic modification of HNT was carried out using telehelic polyetheramine inorder to overcome the poor dispersion of HNT in PSU matrix. Telehelic polyetheramine acts as a dispersing agent and a hydrophilic modifier. FTIR results revealed the hydrogen bond formation between –SO₂ of PSU and –NH₂ of modified HNT. Based on the obtained results of contact angle measurements, the wettability of membranes were found to increase with the weight percentage of HNT in the presence of polyetheramine. At higher loading of filler the water uptake was found to be increasing due to the aggregation of nanotubes. Porosity values substantiate the results obtained for contact angle and water uptake measurements. Thermogravimetric results showed that the thermal stability of polysulfone (PSU)/HNT nanocomposite membranes decreased when compared to neat PSU due to the presence of aliphatic chain of polyetheramine.