2002
DOI: 10.1006/jcis.2002.8348
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Polyurethane and Sulfonated Polysulfone Blend Ultrafiltration Membranes

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Cited by 27 publications
(34 citation statements)
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“…The control of the interfacial forces at level of the membrane surface becomes, therefore, a crucial point for the process outcome. The establishment of suitable interactions between membrane and molecules to be separated can be achieved by inserting additional chemical moieties, responsible for changes in the surface character and consequently in the membrane affinity [6,[9][10][11][12]. The modification of the membrane surface chemistry can be induced by using different techniques as blends, dip-coatings, wet chemical treatments, grafting, plasma, etc.…”
Section: Introductionmentioning
confidence: 99%
“…The control of the interfacial forces at level of the membrane surface becomes, therefore, a crucial point for the process outcome. The establishment of suitable interactions between membrane and molecules to be separated can be achieved by inserting additional chemical moieties, responsible for changes in the surface character and consequently in the membrane affinity [6,[9][10][11][12]. The modification of the membrane surface chemistry can be induced by using different techniques as blends, dip-coatings, wet chemical treatments, grafting, plasma, etc.…”
Section: Introductionmentioning
confidence: 99%
“…Because pores are the least mechanically stable regions of a membrane, it is the macrovoid walls that respond greatest to applied pressures [17,18]. As pressure is applied, pore walls become denser and macrovoids become smaller, resulting in increased tortuosity and decreased flux across the membrane [10,19,20]. The flux reaches a steady value when the support membrane has compacted to the point at which it resists the given pressure.…”
Section: Introductionmentioning
confidence: 99%
“…As membranas apresentaram alto índice de adsorção de água, apesar de a polisulfona apresentar características hidrofóbicas. Malaisamy et al [7] obtiveram aumento na adsorção de água próxima com o aumento da proporção de PSO na blenda PU/PSO. Porém, como citado anteriormente [7] , as membranas de PU são densas, ou seja, não-porosas.…”
Section: Determinação Da Densidade E Porosidadeunclassified
“…Malaisamy et al [7] obtiveram aumento na adsorção de água próxima com o aumento da proporção de PSO na blenda PU/PSO. Porém, como citado anteriormente [7] , as membranas de PU são densas, ou seja, não-porosas. Já as membranas de PSO apresentam elevado percentual de porosidade, o que explica a alta adsorção de água pelas membranas preparadas neste trabalho.…”
Section: Determinação Da Densidade E Porosidadeunclassified
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