Novel Silica Functionalized Monosodium Glutamate/PVA Cross-Linked Membranes for Alkali Recovery by Diffusion Dialysis

نویسندگان

چکیده

In this work, two types of silica functionalized monosodium glutamate (GMSG and VMSG)/poly(vinyl alcohol) (PVA) were cross-linked by sol–gel process to prepare novel hybrid cation exchange membranes. The prepared membranes systematically characterized FTIR spectroscopy, SEM analysis, ion capacity (IEC), TGA, water uptake, swelling, mechanical strength diffusion dialysis performance for alkali separation using NaOH/Na2WO4 solution. peaks around 1260–1350 cm? 1 confirmed the secondary C–N linkages. cross-linking between GMSG/VMSG PVA was verified presence stretching Si–O–C, Si–O–Si, C–O–C –C(=O)–O–C groups 1080 1120 1. analysis dense structure uniform distribution particles in membrane. TGA results indicated that GMSG showed relatively high thermal stability as compared VMSG Water uptake degree swelling decreased while IEC values increased with increase content membrane matrix. properties improved up 40% content. NaOH coefficient (UOH) factor (S) declined Finally, effect temperature studied it found from 25 45 °C resulted decrease both crossed-linked

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ژورنال

عنوان ژورنال: Journal of Polymers and The Environment

سال: 2021

ISSN: ['1566-2543', '1572-8919']

DOI: https://doi.org/10.1007/s10924-021-02205-3