In-situ preparation of poly(ether imide)/amino functionalized silica mixed matrix membranes for application in enzyme separation

Wu, Lishun; Sun, Jiatong; Lv, Ziying; Chen, Ying

doi:10.1016/j.matdes.2015.12.108

Cited by 16 publications

(3 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, APTES has long been used to modify the surface of SiO 2 nanoparticles and other nanomaterials due to its special amino side chain. So the co‐hydrolysis and co‐condensation of TEOS and APTES will create amino‐functionalized SiO 2 nanoparticles . Therefore, we can conclude that it is the “resistance” of strong interactions between NH 2 on the SiO 2 nanoparticles and CN on the PAN polymer chains that holds more SiO 2 nanoparticles in the membrane bulk.…”

Section: Resultsmentioning

confidence: 93%

Inorganic nanoparticles incorporated in polyacrylonitrile‐based mixed matrix membranes for hydrophilic, ultrafast, and fouling‐resistant ultrafiltration

Liu

Pan

et al. 2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

Mixed matrix membrane (MMM) structures and performances are greatly affected by the distribution of nanoparticles in the polymeric matrix. Until now, there has been little research on the effects of nanoparticle distribution states on polyacrylonitrile (PAN)‐based MMM structures and performances. In this paper, different intermolecular interactions between nanoparticles and PAN molecules were generated by in situ fabricated amino‐functionalized SiO2 and TiO2 nanoparticles to create absolutely different distribution states of nanoparticles in a PAN matrix. The results indicated that, due to the strong interactions between amino and cyano groups, SiO2 is distributed in the PAN membranes homogeneously, while most of the TiO2 migrates to the membrane's top surfaces or the walls of pores or even escape from the membranes during the nonsolvent index phase separation (NIPS) process. PAN‐TiO2 MMMs have more hydrophilic top surfaces, higher porosity, larger mean pore size, and stronger antifouling performances than pure PAN and PAN‐SiO2 membranes. The PAN‐TiO2 MMMs have an ultrahigh water flux of 1204.6 L/(m2 h), which is more than 44 times that of PAN membranes. And the good pore structures and hydrophilicity of the membranes derived from special interactions between in situ TiO2 nanoparticles and PAN molecules can give high‐performance PAN‐based ultrafiltration membranes a bright future. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47902.

show abstract

Section: Resultsmentioning

confidence: 93%

Inorganic nanoparticles incorporated in polyacrylonitrile‐based mixed matrix membranes for hydrophilic, ultrafast, and fouling‐resistant ultrafiltration

Liu

Pan

et al. 2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…A suitable porous membrane material used in the UF process should have excellent mechanical stability, permeability, hydrophilicity and resistance to the feed streams, which play a very vital role in separation process 3 . Polyetherimide (PEI) is a common microfiltration (MF), ultrafiltration (UF), and pervaporation membrane material due to its excellent film-forming capacity, thermal stability, mechanical strength and chemical resistance to wide range of pH 4 . However, pristine PEI membrane hampers their usage to aqua-based media due to its hydrophobic nature.…”

Section: Introductionmentioning

confidence: 99%

Removal of metal ions and humic acids through polyetherimide membrane with grafted bentonite clay

Hebbar

Isloor

Prabhu

et al. 2018

Sci Rep

120

View full text Add to dashboard Cite

Functional surfaces and polymers with branched structures have a major impact on physicochemical properties and performance of membrane materials. With the aim of greener approach for enhancement of permeation, fouling resistance and detrimental heavy metal ion rejection capacity of polyetherimide membrane, novel grafting of poly (4-styrenesulfonate) brushes on low cost, natural bentonite was carried out via distillation-precipitation polymerisation method and employed as a performance modifier. It has been demonstrated that, modified bentonite clay exhibited significant improvement in the hydrophilicity, porosity, and water uptake capacity with 3 wt. % of additive dosage. SEM and AFM analysis showed the increase in macrovoides and surface roughness with increased additive concentration. Moreover, the inclusion of modified bentonite displayed an increase in permeation rate and high anti-irreversible fouling properties with reversible fouling ratio of 75.6%. The humic acid rejection study revealed that, PEM-3 membrane having rejection efficiency up to 87.6% and foulants can be easily removed by simple hydraulic cleaning. Further, nanocomposite membranes can be significantly employed for the removal of hazardous heavy metal ions with a rejection rate of 80% and its tentative mechanism was discussed. Conspicuously, bentonite clay-bearing poly (4-styrenesulfonate) brushes are having a synergistic effect on physicochemical properties of nanocomposite membrane to enhance the performance in real field applications.

show abstract

“…Adsorptive MMMs incorporate adsorptive particles into the polymeric porous matrix where the interactions between enzymes or proteins and adsorptive particles happen. So far, different adsorptive particles, such as ion-exchange resins [8,9], amino-functionalized silicon dioxide (NH 2 −SiO 2 ) [10], activated carbon (AC) [11] and hydroxyapatite (Ca 5 (PO 4 ) 3 (OH), HAP) [12], were embedded into polymeric matrixes to adsorb enzymes or proteins. Modified HAP [13][14][15] and other phosphates [16][17][18] are also important and were used in biomedical applications.…”

Section: Introductionmentioning

confidence: 99%

Organic-Solvent-Resistant Polyimide/Hydroxyapatite Mixed Matrix Membranes for Lysozyme Adsorption

Sun,

Pang,

Chen

2023

Materials

Self Cite

View full text Add to dashboard Cite

This work reports new mixed matrix membranes (MMMs) for the adsorption of enzymes from organic solvents. In this work, polyimide/hydroxyapatite (PI/HAP) MMMs were prepared via phase inversion method and further crosslinked with 3-aminopropyl triethoxysilane (APTES). The chemical and structural stability of the crosslinked PI/HAP MMMs were improved and applied for lysozyme (LZ) adsorption in organic solvent. PI/HAP MMMs were crosslinked by changing the 3-aminopropyltriethoxysilane (APTES) concentration and crosslinking time. The optimal APTES crosslinking condition for PI/HAP MMMs is 6% of concentration for 8 h. The LZ adsorption performance was studied by changing solvent types. PI/HAP MMMs possessed a high LZ adsorption in organic-solvent-aqueous solutions, and the LZ adsorption capacity reached 34.1 mg/g. The MMMs had a high desorption capacity and recovery ability. The MMMs maintained 60% of their adsorption capacity and 58% of their desorption at the fourth cycle of adsorption and desorption. The MMMs provided a new technology for the purification and separation of enzymes or proteins by MMMs in organic solvents.

show abstract

In-situ preparation of poly(ether imide)/amino functionalized silica mixed matrix membranes for application in enzyme separation

Cited by 16 publications

References 63 publications

Inorganic nanoparticles incorporated in polyacrylonitrile‐based mixed matrix membranes for hydrophilic, ultrafast, and fouling‐resistant ultrafiltration

Inorganic nanoparticles incorporated in polyacrylonitrile‐based mixed matrix membranes for hydrophilic, ultrafast, and fouling‐resistant ultrafiltration

Removal of metal ions and humic acids through polyetherimide membrane with grafted bentonite clay

Organic-Solvent-Resistant Polyimide/Hydroxyapatite Mixed Matrix Membranes for Lysozyme Adsorption

Contact Info

Product

Resources

About