2017
DOI: 10.1016/j.memsci.2016.09.034
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Self-standing nanofilms of polysulfone doped with sulfonated polysulfone via solvent evaporation for forward osmosis

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Cited by 24 publications
(17 citation statements)
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“…Instead, nanostructures must be constructed to produce membranes that reduce or eliminate ICP . Nanofibers, carbon nanotubes, and porous carbon fibers with enhanced porosity and reduced tortuosity have been exploited as alternative supports for composite membranes to enhance osmotic water flux. Without support, self-standing polymer thin films have a negligible ICP effect even when using highly concentrated draw solutions, whereas thick, nonporous polymer films exhibit low intrinsic water permeability. If microporous building blocks could be rationally incorporated into a self-supportive thin film, high performances with enhanced osmotic water flux and the separation of ions/small organic molecules could be expected in the resulting membranes …”
mentioning
confidence: 99%
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“…Instead, nanostructures must be constructed to produce membranes that reduce or eliminate ICP . Nanofibers, carbon nanotubes, and porous carbon fibers with enhanced porosity and reduced tortuosity have been exploited as alternative supports for composite membranes to enhance osmotic water flux. Without support, self-standing polymer thin films have a negligible ICP effect even when using highly concentrated draw solutions, whereas thick, nonporous polymer films exhibit low intrinsic water permeability. If microporous building blocks could be rationally incorporated into a self-supportive thin film, high performances with enhanced osmotic water flux and the separation of ions/small organic molecules could be expected in the resulting membranes …”
mentioning
confidence: 99%
“…Because of their pore flexibility and missing-linker defects, the polycrystalline UIO-66 membrane exhibited the imperfect rejection of ions. , Instead, the variable functionality of UiO-66 ligands leads to chemical interactions with the polymer matrix, improving the pore rigidity and linker fixing through covalent bonds (e.g., amides and esters), complex associations (e.g., metal–ligand complexes), and weak forces (e.g., hydrogen bonding and van der Waals forces) . Recently, we demonstrated that the sulfonic groups of an ionic polymer binder called sulfonic polysulfone (sPSf) (Figure a) could form inter/intra-molecular hydrogen bonding in a polysulfone (PSf)-matrix thin film, enabling high water permeance in OPD . We hypothesize that the rational choice of UiO-66, mixed with sPSf polymer binder, creates tight polymer-MOF bindings in the resulting mixed-matrix thin film (Figure b).…”
mentioning
confidence: 99%
“…Neste trabalho o polímero escolhido foi a polisulfona, que possui caráter hidrofóbico, boa estabilidade mecânica, térmica e química. É um dos plásticos de engenharia mais conhecidos e utilizados para o desenvolvimento de membranas (Ahn, Chung, Pinnau, & Guiver, 2008;Yuan, Liu, Liu, & Wang, 2017). Em membranas, a utilização desse polímero é de grande interesse para aplicações de tratamento de efluentes, separação de gás, nanofiltração (NF), osmose reversa, aplicações médicas, industriais e ultrafiltração (UF) (Anadão, Sato, Wiebeck, & Valenzuela-Díaz, 2010;Botvay, Máthé, Pöppl, Rohonczy, & Kubatovics, 1999).…”
Section: Introductionunclassified
“…A polisulfona é um polímero de engenharia caracterizado pela alta resistência térmica, oxidativa e mecânica, além de possuir excelente resistência a ácidos, bases e hidrocarbonetos [1][2][3]. As características deste polímero despertaram interesse para aplicação em membranas no intuito de tratar efluentes, separação de gás, nanofiltração, ultrafiltração, entre outros [4], já que esse método de separação por membranas destaca-se, em relação aos métodos tradicionais, por apresentar baixo consumo de energia, maior eficiência, processamento com etapas reduzidas e produto final de qualidade [5].…”
Section: Introductionunclassified