Synthesis and characterization of diaminomaleonitrile-functionalized polystyrene grafts for application in pervaporation separation
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Hamada Abdel-Razik
Abstract
Synthesis, characterization and application of diaminomaleonitrile (DAMN)-functionalized polystyrene grafts were studied. Dibenzoyle peroxide (BP) was used as an initiator. Optimum conditions for grafting were found to be c(DAMN) = 0.5 M, c(BP) = 0.016 M, θ = 85 °C and t = 4 h. Water uptake of the polystyrene graft membranes was found to increase with the increase of the grafting yield. The chemical structure, thermal characteristics and thermal stability of the obtained membranes were investigated by means of FTIR spectroscopy, differential scanning calorimetry, and thermal gravimetric analysis. Polystyrene graft membrane with the degree of grafting of up to 96 % was found to be useful for the pervaporation separation of phenol/water mixtures.
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© 2008 Institute of Chemistry, Slovak Academy of Sciences
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Artikel in diesem Heft
- Square-wave adsorptive stripping voltammetric determination of an antihistamine drug astemizole
- Flow injection spectrophotometric determination of iron(III) using diphenylamine-4-sulfonic acid sodium salt
- Sensitive determination of nitrogenous hydrochloride drugs via their reaction with ammonium molybdate
- Effect of different Fe(III) compounds on photosynthetic electron transport in spinach chloroplasts and on iron accumulation in maize plants
- Comparison of different technologies for alginate beads production
- Design and economics of industrial production of fructooligosaccharides
- Preparation of nanocrystalline anatase TiO2 using basic sol-gel method
- 3,5-Bis(2-hydroxyphenyl)-1H-1,2,4-triazole based ligands — protonation and metal complex formation
- Synthesis, characterization, fluorescence and redox features of new vic-dioxime ligand bearing pyrene and its metal complexes
- Synthesis and characterization of diaminomaleonitrile-functionalized polystyrene grafts for application in pervaporation separation
- Synthesis and magnetic properties of polymeric complexes containing ruthenium(II)-ruthenium(III) tetracarboxylato units linked by cyanato, thiocyanato, and selenocyanato ligands
- Preparation and modification of collagen-based porous scaffold for tissue engineering
- Synthesis, crystal structure, and magnetic properties of a cobalt(II) complex with (3,5-dichloropyridin-4-yl)(pyridin-4-yl)methanol
- Synthesis and reactions of 2-[3-(trifluoromethyl)phenyl]furo[3,2-c]pyridine
- Alkalimetric determination of hydrophobic pharmaceuticals using stabilized o/w emulsions
- Extraction and analysis of ellagic acid from novel complex sources
