A simplified diamine crosslinking method for PI nanofiltration membranes

Vanherck, Katrien; Cano-Òdena, Àngels; Koeckelberghs, Guy; Dedroog, Tom; Vankelecom, Ivo F.J.

doi:10.1016/j.memsci.2010.02.046

Cited by 181 publications

(116 citation statements)

References 20 publications

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“…7c, it is showed the maximum ratio is recorded in early stage (1 day), it went to minimum for 3 days and then increased a little bit at 7 days. It is straightforward illustrated that the more linear structure at 1 day (less cross-linking [28,29]) gave rise to high flexibility. With more and more crosslinking structure formed, the composite are becoming more and more brittle.…”

Section: The Fracture Toughness Of Gcc Modified Ermmentioning

confidence: 99%

Toughness improvement of epoxy resin mortar by incorporation of ground calcium carbonate

Liu

Yuan

et al. 2015

Construction and Building Materials

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Section: The Fracture Toughness Of Gcc Modified Ermmentioning

confidence: 99%

Toughness improvement of epoxy resin mortar by incorporation of ground calcium carbonate

Liu

Yuan

et al. 2015

Construction and Building Materials

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“…For PI, cross-linking is a welldocumented method to solve the problem since PI has unique reactive groups. [46][47][48][49][50][51][52] For PDMS as a kind of dense and easily swelling materials, the blending approach by the addition of rigid fillers (montmorillonite, mica, zinc oxide, zeolite A,15 ZSM-5, zeolite Y, silicalite, and so on) seems the effective way. For PA with the well cross-linked structure, the affinity between PA and the used solvents and the stability of the support should be further improved.…”

Section: The Polymeric Materials For Srnf Membranesmentioning

confidence: 99%

“…Two steps are generally needed to make SRNF membranes from PI, including phase inversion and cross-linking by thermal treatment, 53 UV irradiation, 54 or chemical reactions. [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.…”

Section: Pi For Srnf Membranesmentioning

confidence: 99%

Recent Advances in Polymeric Solvent‐Resistant Nanofiltration Membranes

et al. 2014

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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

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“…Recently, we have developed an in-situ crosslinking method that avoids the multi-step process by using the crosslinking agent as an additive in the aqueous coagulation bath used for phase inversion [25]. During the immersion precipitation step, the membrane is simultaneously solidified and crosslinked.…”

Section: Introductionmentioning

confidence: 99%

“…The post-synthesis crosslinking method involving the use of methanol will further be referred to as POST and the presented in-situ method as SIM. The influence of the crosslinker type, its concentration and the reaction time on the crosslinking degree of PI-membranes has previously been thoroughly studied for POST as well as for SIM [1][2][3][4]6,9,10,15,25]. For POST, the influence of crosslinking on the membrane performance in SRNF has been investigated [10,14], but this has yet to be studied for SIM.…”

Section: Introductionmentioning

confidence: 99%