کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5209884 | 1503074 | 2015 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Thin-film composite crosslinked polythiosemicarbazide membranes for organic solvent nanofiltration (OSN) Thin-film composite crosslinked polythiosemicarbazide membranes for organic solvent nanofiltration (OSN)](/preview/png/5209884.png)
In this work we report a new class of solvent stable thin-film composite (TFC) membrane fabricated on crosslinked polythiosemicarbazide (PTSC) as substrate that exhibits superior stability compared with other solvent stable polymeric membranes reported up to now. Integrally skinned asymmetric PTSC membranes were prepared by the phase inversion process and crosslinked with an aromatic bifunctional crosslinker to improve the solvent stability. TFC membranes were obtained via interfacial polymerization using trimesoyl chloride (TMC) and diaminopiperazine (DAP) monomers. The membranes were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and contact angle measurement.The membranes exhibited high fluxes toward solvents like tetrahydrofuran (THF), dimethylformamide (DMF) and dimethylsulfoxide (DMSO) ranging around 20Â L/m2Â h at 5Â bar with a molecular weight cut off (MWCO) of around 1000Â g/mol. The PTSC-based thin-film composite membranes are very stable toward polar aprotic solvents and they have potential applications in the petrochemical and pharmaceutical industry.
Journal: Reactive and Functional Polymers - Volume 86, January 2015, Pages 225-232