Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 136, Issue 31, Pages -Publisher
WILEY
DOI: 10.1002/app.47835
Keywords
adsorption; l-arginine; membranes; nitrophenols; polyvinyl alcohol
Categories
Funding
- Higher Education Research Promotion and National Research University Project of Thailand (NRU), Office of the Higher Education Commission through Advanced Functional Materials Cluster of Khon Kaen University [NRU544026]
- Thailand Research Fund (TRF)
- Synchrotron Light Research Institute (SLRI)
- Khon Kaen University (KKU) under TRF research scholar program [RSA5980075]
- Khon Kaen University under NRU Project through Advanced Functional Materials Cluster [AFM-2553-Ph.D. - 08]
- Biofuel cluster of KKU under NRU Grant [NRU57]
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Green and single-step synthesis of porous poly(vinyl alcohol) membrane functionalized with l-arginine (PVA-g-Arg) is presented. Crosslinking, l-arginine functionalization and pore forming occurred simultaneously by a thermally induced process without using a crosslinker or an initiator. As-synthesized PVA-g-Arg membranes possessed a porous structure with an average pore size of 32-56m depending on the amount of l-arginine. The PVA-g-Arg were utilized as adsorbent membranes for the removal of 4-nitrophenol (4-NP) from aqueous solutions and demonstrated higher adsorption capacity than that of the unmodified PVA porous membrane. The pseudo-second-order described satisfactorily the kinetic adsorption of 4-NP by the membranes while the isotherms followed both the Langmuir and Freundlich models. The negative values of G degrees and thermodynamic parameters confirmed that the adsorption of 4-NP by the PVA-g-Arg membranes was spontaneous and exothermic. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47835.
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