Preparation of molecularly imprinted polymer membrane with blending trimethoprim-MIP and polysulfone and its transport properties

Fan, Peimin; Wang, Bing

doi:10.1007/s11814-009-0256-x

Cited by 17 publications

(12 citation statements)

References 16 publications

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“…As PSF exhibits resistance towards plasticization over an operating pressure of 30 bar maintaining good permselectivity, crosslinking of PSF and PI polymers is likely to impart superior properties in the membrane for gas separation [21][22][23][24][25]. In the present investigation, therefore, PSF-PI blended asymmetric membranes of different compositions have been fabricated by phase inversion technique and the membranes have been characterized in terms of morphology, porosity, glass transition temperature, mechanical strength and CO 2 /CH 4 separation performance.…”

Section: Introductionmentioning

confidence: 99%

Preparation of asymmetric polysulfone/polyimide blended membranes for CO2 separation

Rafiq

Man

Maitra

et al. 2011

Korean J. Chem. Eng.

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Asymmetric Flat sheet polysulfone-polyimide (PSF-PI) blended polymeric membranes (with PI content from 5-20%) have been fabricated following phase inversion technique. The membranes have been thoroughly characterized by the measurement of porosity, mechanical properties and also by SEM, FTIR and DSC analyses. With the increase in the PI content, the mechanical properties of the membranes, like Young's modulus, tensile strength and elongation at break, increased. SEM investigations revealed that the surfaces of fabricated blended membranes possessed adequate homogeneity and their cross-sections showed non-porous top and diminutive porous substructure. From DSC analyses it has been observed that different compositions of the blended membranes exhibited single glass transition temperatures, implying proper compatibility of the polymers. The permeance of CO 2 and CH 4 through the membrane increased with the increase in PI content and it gradually decreased with the increase in the feed pressure in the range of 2-10 bar. Under the present investigation, the membrane with 20% PI content exhibited the maximum selectivity for the separation of CO 2 /CH 4 gas mixes.

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Section: Introductionmentioning

confidence: 99%

Preparation of asymmetric polysulfone/polyimide blended membranes for CO2 separation

Rafiq

Man

Maitra

et al. 2011

Korean J. Chem. Eng.

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“…As expected, the reduction of the PSf weight percentage at the same time with the enhancement of the MIP content caused the mean surface pore size to increase from 49.7 nm for pure PSf membrane to 355.0 nm as a maximum amount for HMIP‐5 membrane containing 125 wt% PSf of MIP‐1. In addition, this results possibly from the presence of MIP‐1 nanospheres weakening and unlinking the linkage of the PSf macromolecule intermolecular forces in the membrane matrix through proper embedding and folding within the porous bulk of the membranes polymer matrix, although physical crosslinking between imprinted powder and macromolecular chain segments may be formed and limit the movement of molecular chain segments . These results also justify the permeate flux enhancement shown in Fig.…”

Section: Resultsmentioning

confidence: 63%

Novel composite membranes embedded with molecularly imprinted porous polymeric nanospheres for targeted phenol

Ashrafian

Ataei

Jahanshahi

2015

Polym. Adv. Technol.

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In the present research, novel hybrid molecularly imprinted polymer (HMIP) membranes were synthesized for selective adsorption and separation of phenol toxic molecules from aqueous solutions. Molecularly imprinted polymer (MIP) nanospheres for targeted phenol were successfully prepared using precipitation polymerization of methacrylic acid, trimethylolpropane trimethacrylate, and ethylene glycol dimethacrylate, followed by integrating into polysulfone matrix to create the HMIP membranes via a phase inversion method. The fabricated materials were characterized from the viewpoints of spectroscopic analysis, structural and surface morphological properties, porosimetry, and batch rebinding assays. The imprinted polymeric nanospheres with mean diameter value ranging from 210 to 250 nm and average pore diameter of 8 nm were obtained according to the morphological and Brunauer-Emmett-Teller analysis, respectively. Scanning electron microscopy pictures demonstrated that the MIP spheres were uniformly distributed on the surface and in the bulk polymer phase of the hybrid membrane. The surface roughness, porosity, and permeate flux of membrane were significantly augmented by addition of the imprinted polymer particles in the dope solution. HMIP-2 membrane containing 10 wt% of MIP showed the highest binding capacity and an excellent molecular recognition for phenol with respect to the correlative blank membrane. The selective recognition of phenol on the HMIP-2 membrane was 3.5 times larger than the analogous compound (i.e. catechol). Moreover, the maximum separation factor of phenol was obtained as 2.19 relative to catechol through selective permeation studies, which was also observed for HMIP-2 membrane.

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“…Some other publications (and more) discussed the preparation of MIMs by using this technique [28,29,[126][127][128][129][130][131][132][133][134].…”

Section: Molecularly Imprinted Membranesmentioning

confidence: 99%

Emerging Tools for Recognition and/or Removal of Dyes from Polluted Sites: Molecularly Imprinted Membranes

Algieri

Drioli

Ahmed

et al. 2014

J. Memb. Separ. Tech.

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Dyes are used in different industries as textile, paper, food processing, cosmetic, leather tanning, rubber, printing and so on. These chemical substances have negative effect on the quality of the water and food, causing human diseases and environmental problems. In view of these aspects, colorant have attracted the interest of the scientists in developing efficient routes for their detection and/or removal from the polluted sites. Although traditional technologies used for removal of dyes are efficient, there is the necessity of developing innovative systems both more cheaply and of easy performance. In this scenario, the integration of the membrane science with the molecular imprinting technology is an alternative way that present many advantages such us the removal or detection of a specific dye or a class of dyes and cost reduction processes. In fact, exploiting the benefits of these two technologies it is possible to develop molecularly imprinted membranes able to recognize a dye of interest in specific mode. This potential is promising for combatting the illegal use of dyes in food, drinks and aquaculture as well as for their removal. The main positive aspects of the imprinted membranes are their chemical stability, reusability, as well as the resistance to the pH and temperature. In addition, their preparation requires short operation time and it is not expensive. All these properties have an encouraging impact in dealing with the problem of dyes contamination. This short review offers a description of the concept of molecular imprinting, starting from the approach of the synthesis of imprinted polymers until the description of the preparation of imprinted membranes. The application of imprinted polymers and membranes for the detection and/or removal of dyes from polluted sites will be also discussed.

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Preparation of molecularly imprinted polymer membrane with blending trimethoprim-MIP and polysulfone and its transport properties

Cited by 17 publications

References 16 publications

Preparation of asymmetric polysulfone/polyimide blended membranes for CO2 separation

Preparation of asymmetric polysulfone/polyimide blended membranes for CO2 separation

Novel composite membranes embedded with molecularly imprinted porous polymeric nanospheres for targeted phenol

Emerging Tools for Recognition and/or Removal of Dyes from Polluted Sites: Molecularly Imprinted Membranes

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