Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 131, Issue 21, Pages -Publisher
WILEY
DOI: 10.1002/app.41013
Keywords
blends; copolymers; membranes; rheology
Categories
Funding
- BS Eranet project [7-045 IMA-WATCO]
- Parteneriate project [117/2012 SPOFLORAHYP]
Ask authors/readers for more resources
New microfiltration and ultrafiltration membranes were obtained using acrylonitrile-vinyl acetate copolymers in mixture with poly(vinyl alcohol) (PVA). Thus, a blend polymer solution was prepared in dimethylsulfoxide (DMSO) and used to obtain bicomponent polymer membranes by phase inversion. The rheological behavior of the DMSO polymer solutions was, mostly, dilatant at low shear gradients and pseudo plastic with quasi Newtonian tendency at higher gradients. Membranes were characterized by Fourier transform infrared spectrometry (FTIR), optical microscopy, atomic force microscopy, thermal gravimetric analysis-differential thermal gravimetry, and pure water flux (PWF). FTIR spectra displayed the characteristic bands for acrylonitrile, vinyl acetate, and PVA. The morphology and the porosity can be tailored by the preparation conditions. PVA allows controlling the size of the pores and enables, in principle, to use the resulted membranes as supports for enzyme immobilization. PVA content influences the thermal stability. PWF values depend on the copolymer, on the content in PVA, but also on the coagulation bath composition. (C) 2014 Wiley Periodicals, Inc.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available