Effect of coagulation media on membrane formation and vapor permeation performance of novel aromatic polyamide membrane

Fan, Shu-Chin; Wang, Yi-Chieh; Li, Chi-Lan; Lee, Kueir‐Rarn; Liaw, Der‐Jang; Huang, Hsin Pou; Lai, Juin‐Yih

doi:10.1016/s0376-7388(02)00017-0

Cited by 29 publications

(19 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These include the composition of polymer solution (polymer concentration, solvent, cosolvent, additives, and their respective concentrations) [9,10], the type of support material (polymer, glass, metal, nonwovens, etc.) [11], the thickness of the casted polymer film [12], the temperature and time of a possible evaporation step before immersion [13], the temperature and composition of the quenching bath [14], as well as the posttreatment [15] and conditioning of the membrane prior to filtration [16].…”

Section: Introductionmentioning

confidence: 99%

Influence of PVDF concentration on the morphology, surface roughness, crystalline structure, and filtration separation properties of semicrystalline phase inversion polymeric membranes

Akbari¹,

Hamadanian²,

Jabbari³

et al. 2012

Desalination and Water Treatment

View full text Add to dashboard Cite

To cite this article: A. Akbari , M. Hamadanian , V. Jabbari , A. Yunessnia Lehi & M. Bojaran (2012) Influence of PVDF concentration on the morphology, surface roughness, crystalline structure, and filtration separation properties of semicrystalline phase inversion polymeric membranes, Desalination and Water Treatment, 46:1-3, 96-106, A B S T R A C TThis study was focused on the fabrication of nanoporous poly(vinylidene fluoride) (PVDF) membranes at different polymer concentration (14, 17, and 20 wt%) via phase inversion method. The morphology and surface roughness of the resulting membranes were investigated by scanning electron microscopy (SEM) and atomic force microscope, respectively. SEM results showed that with the increase of polymer concentration, the pore size of membranes and the overall porosity decrease. Also, the results showed that varying concentration results in significant changes on the surface roughness. Analysis of the crystalline structures of PVDF membranes by X-ray diffraction showed that the membranes, which precipitated in the higher concentration of polymer (20 wt%) had a typical "b" form of the crystalline phase, whereas those membranes that formed at lower concentration (14 wt%) showed crystallites of the "a + b" form of the crystalline phase. Furthermore, the filtration separation experiments of Acid Yellow 23 (AY23) were conducted to examine the effects of concentration parameter on the performance of nanoporous PVDF membranes. Results showed that the retention of AY23 increases as the polymer concentration increases and an efficiency of 89.72% was achieved in polymer concentration of 20 wt%.

show abstract

Section: Introductionmentioning

confidence: 99%

Influence of PVDF concentration on the morphology, surface roughness, crystalline structure, and filtration separation properties of semicrystalline phase inversion polymeric membranes

Akbari¹,

Hamadanian²,

Jabbari³

et al. 2012

Desalination and Water Treatment

View full text Add to dashboard Cite

show abstract

“…These include the composition of the polymer solution (solvent, cosolvent, additives and their respective concentrations) [7][8][9][10][11], the type of support material (glass, polymer, metal, non-wovens, etc.) [12], the thickness of the cast polymer film [13], the time and temperature of a possible evaporation step before immersion [14,15], the composition and temperature of the quenching bath [11,16,17], as well as the post-treatment [18,19] and conditioning of the membrane prior to filtration [20].…”

Section: Introductionmentioning

confidence: 99%

High throughput study of phase inversion parameters for polyimide-based SRNF membranes

Vandezande

Gevers

et al. 2009

Journal of Membrane Science

149

View full text Add to dashboard Cite

“…The effect of changing the composition of the casting solution is well documented for asymmetric-membranes prepared for separation applications [20][21][22][23][24][25][26][27]. However, there are relatively few quantitative studies illustrating the relationship between the composition of the casting solution and the drug release rate from the asymmetric-membrane coated tablets/capsules [6,16].…”

Section: Effect Of Composition Of the Coating Solutionmentioning

confidence: 99%

In vitro drug release rates from asymmetric-membrane tablet coatings: Prediction of phase-inversion dynamics

Altınkaya

Yenal

2006

Biochemical Engineering Journal

View full text Add to dashboard Cite

Most of the controlled-release systems developed for drug delivery applications depend on membrane technology. The dense structure of some membranes used in controlled-release systems can excessively prolong the release of drug due to the low permeability of the coating to drug. To increase the drug release rate, asymmetric-membrane tablet coatings were prepared by a phase-inversion technique using cellulose acetate/acetone/water solution. The roles of the composition of the membrane solution and the evaporation condition on the release rate of drug were determined using in vitro dissolution and morphological studies and predicted phase diagrams. Results show that drug release from asymmetricmembrane based tablet coatings is primarily governed by the dynamics of the phase-inversion process with zero-order or near-zero-order release easily achievable. In an attempt to derive an empirical expression for the release rate of drug as a function of composition of the coating solution, a statistical experimental design was used. Good fit of the experimental data by the empirical expression was obtained. In addition, the predictive capability of the model equation was also found to be satisfactory. Analysis of the significance of each term in the expression indicates that the cellulose acetate:acetone ratio has the most significant influence on the release rate of theophylline.

show abstract

Effect of coagulation media on membrane formation and vapor permeation performance of novel aromatic polyamide membrane

Cited by 29 publications

References 18 publications

Influence of PVDF concentration on the morphology, surface roughness, crystalline structure, and filtration separation properties of semicrystalline phase inversion polymeric membranes

Influence of PVDF concentration on the morphology, surface roughness, crystalline structure, and filtration separation properties of semicrystalline phase inversion polymeric membranes

High throughput study of phase inversion parameters for polyimide-based SRNF membranes

In vitro drug release rates from asymmetric-membrane tablet coatings: Prediction of phase-inversion dynamics

Contact Info

Product

Resources

About