Optimization of solvent resistant nanofiltration membranes prepared by the in-situ diamine crosslinking method

Hendrix, Katrien; Vanherck, Katrien; Vankelecom, Ivo F.J.

doi:10.1016/j.memsci.2012.06.022

Cited by 63 publications

(32 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[19][20][21]46,55,56 P84 and Matrimid R are two types of commercial PI products that have been widely used to fabricate SRNF membranes. [19][20][21][22]46,47,52,55,[57][58][59][60] The PI should be dissolved in polar solvents such as DMAc, N-methyl-2-pyrrolidone (NMP), and DMSO to form a homogeneous doping solution and optimize performance. The doping solution is then degassed before casting on a nonwoven support.…”

Section: Pi For Srnf Membranesmentioning

confidence: 99%

“…The commonly screened cross-linkers are diamines, such as ethylenediamine, hexanediamine, p-xylylenediamine (XDA), diethylenetriamine, N,N -dimethylethylenediamine, and so on. [19][20][21][22]44,55,60 After crosslinking, PI membranes are usually immersed in an oily solution to avoid pore collapse. This solution typically consists of 40 vol% toluene, 40 vol% 2-methyl-4-pentanone, and 20 vol% mineral oil.…”

Section: Pi For Srnf Membranesmentioning

confidence: 99%

“…57,58 Finally, PI SRNF membranes should be thermally treated for approximately 1 h in a vacuum oven at 65°C to enhance the separation performance. 55,57,58,60 Soroko et al [19][20][21] have published numerous valuable studies on membrane formation parameters, such as the composition of the doping solution, the evaporation step, and the physical and chemical properties of PI materials. The composition of the doping solution affects the separation properties of SRNF membranes.…”

Section: Pi For Srnf Membranesmentioning

confidence: 99%

“…203 Reductions in the processing cost and environmental contamination have been achieved by decreasing the use of solvents for the conventional cross-linking process by using new techniques, such as UV cross-linking 54,204 , plasma treatment, 71 and cross-linking in water baths during phase inversion. 60 In addition, membrane modules, such as capillary and spiral-wound modules, 111 can potentially be manufactured at the industrial scale.…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

See 3 more Smart Citations

Recent Advances in Polymeric Solvent‐Resistant Nanofiltration Membranes

et al. 2014

View full text Add to dashboard Cite

When considering energy consumption and environmental issues, solvent-resistant nanofiltration (SRNF) based on polymeric materials emerges as a process for substituting conventional separation processes of organic solutions, such as distillation, which consume high amounts of energy. Because SRNF does not involve phase transition, this process can potentially decrease the energy consumption and solvent waste and increase the yield of active components. Such improvements could significantly benefit a number of fields, such as pharmaceutical manufacturing and catalysis recovery, among others. Therefore, SRNF has gained a lot of attention since the recent introduction of solvent-stable polymeric materials in the manufacture of nanofiltration membranes. The membrane materials and the membrane structures depending on the fabrication methods determine the separation performance of polymeric SRNF membranes. Therefore, this article gives a comprehensive overview of the current state-of-art technologies of generating membrane materials and corresponding fabrication methods for SRNF membranes made from polymeric materials expected to provide the most benefit. The transport mechanisms and the corresponding models of SRNF membranes in organic media are also reviewed to better understand the mass transfer process. Various SRNF applications, such as in pharmaceutical and catalyst, among others, are also discussed. Finally, the difficulties and future research directions to overcome the challenges faced by SRNF processes are proposed. C

show abstract

Section: Pi For Srnf Membranesmentioning

confidence: 99%

Section: Pi For Srnf Membranesmentioning

confidence: 99%

Section: Pi For Srnf Membranesmentioning

confidence: 99%

Section: Conclusion and Prospectsmentioning

confidence: 99%

See 2 more Smart Citations

Recent Advances in Polymeric Solvent‐Resistant Nanofiltration Membranes

et al. 2014

View full text Add to dashboard Cite

show abstract

“…The use of diamines as crosslinking agents for polyimide membranes is a popular choice, but most crosslinking techniques involve dissolving the diamine in a solvent and then exposing the membrane to the liquid solution . This can result in undesired change in the membrane due to swelling effects.…”

Section: Introductionmentioning

confidence: 95%

Effect of vapor phase ethylenediamine crosslinking of matrimid on alcohol vapor sorption and diffusion

Stanford

Pfromm

Rezac

2017

J of Applied Polymer Sci

View full text Add to dashboard Cite

This work examines the sorption, diffusion, and polymer relaxation behavior for water and C1‐C7 alcohol vapors at 30 °C in ethylenediamine vapor‐phase crosslinked Matrimid. Ethylenediamine is sufficiently volatile that crosslinking can occur by exposing the polymeric film to saturated vapor, in contrast to more conventional means of dissolving the crosslinker in a solvent and immersing the polymeric film in the solution. The vapor‐phase exposure method avoids the use of additional solvent and undesired solvent‐induced swelling. Sorption isotherms demonstrate that water and C1‐C5 alcohols do not appreciably differ for unmodified and crosslinked Matrimid; however, an approximate 90% reduction in sorption was determined for hexanol and heptanol. A minor impact on diffusion coefficients for water, methanol, and ethanol was observed, while those of propanol and butanol were reduced over an order of magnitude. Relaxation kinetics were similarly unchanged for water and C1‐C3 alcohols, while being significantly reduced for butanol and higher alcohols. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44771.

show abstract

Solvent‐Resistant Nanofiltration Membranes

Hendrix

Vankelecom

2013

Encyclopedia of Membrane Science and Technology

View full text Add to dashboard Cite

Solvent‐resistant nanofiltration (SRNF) is a separation technique that allows separations in organic solvents down to a molecular level. It is a growing technology that is environmentally friendly because of its energy‐ and waste‐efficiency. This article comprises a general introduction to SRNF, explaining its basic principles and considerations. Different methods to evaluate SRNF performance are discussed as well as limitations and challenges of the separation method. A more fundamental discussion of the possible transport mechanisms for different types of SRNF membranes is given. Currently used characterization methods, both novel and state of the art, are listed and discussed. An up‐to‐date overview of SRNF membranes types found in recent literature is given, with subdivisions made for each type of material. Their preparation method is also discussed, as well as possible posttreatments. The most extensive part of this subchapter is dedicated to polymeric SRNF membranes, as these are most abundant in literature, but ceramic and mixed matrix membranes are also discussed. Lastly, commercially available SRNF membranes are mentioned.

show abstract

Optimization of solvent resistant nanofiltration membranes prepared by the in-situ diamine crosslinking method

Cited by 63 publications

References 43 publications

Recent Advances in Polymeric Solvent‐Resistant Nanofiltration Membranes

Recent Advances in Polymeric Solvent‐Resistant Nanofiltration Membranes

Effect of vapor phase ethylenediamine crosslinking of matrimid on alcohol vapor sorption and diffusion

Solvent‐Resistant Nanofiltration Membranes

Contact Info

Product

Resources

About