What question did this study set out to answer?

To synthesize and evaluate self-assembling graft copolymer membranes engineered with defined subnanometer channels for fouling-resistant, high-precision molecular separations.

September 3, 2004Macromolecules

Antifouling Polymer Membranes with Subnanometer Size Selectivity

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Authors

AAAriya AkthakulWaters (United States)RSRichard F. SalinaroPall Corporation (United States)AMAnne M. MayesBoston Sports & Shoulder Center

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Implication

Laboratory investigation reveals subnanometer selectivity and antifouling filtration in self-assembled graft copolymer membranes, indicating broad utility for industrial liquid separations.

Key Points

To synthesize and evaluate self-assembling graft copolymer membranes engineered with defined subnanometer channels for fouling-resistant, high-precision molecular separations.
Fabricated thin film composite and asymmetric blend membranes using amphiphilic poly(vinylidene fluoride)-graft-poly(oxyethylene methacrylate) (PVDF-g-POEM) copolymers.
Characterized self-assembled bicontinuous nanophase morphology using transmission electron microscopy and thermal analysis.
Tested filtration selectivity and antifouling performance against 1,000 ppm oil microemulsions at 66 psi, similarly charged organic dyes, and vitamins B2 and B12.
PVDF ultrafiltration membranes coated with PVDF-g-POEM wetted instantaneously and rejected >99.9% of emulsified oil from a 1,000 ppm microemulsion feed at 66 psi without fouling.
Subnanometer poly(ethylene oxide) channels achieved molecular sieving between like-charged organic dyes differing in size by several angstroms.
Thick copolymer films exhibited chromatographic separation with time-dependent permeation of vitamins B2 and B12, matching performance observed in asymmetric blend membranes.

Cite This Study

Akthakul et al. (2004) studied this question.

synapsesocial.com/papers/6a92ded0de5a63b802a2b177 https://doi.org/10.1021/ma048837s

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Implication

Laboratory investigation reveals subnanometer selectivity and antifouling filtration in self-assembled graft copolymer membranes, indicating broad utility for industrial liquid separations.

Antifouling Polymer Membranes with Subnanometer Size Selectivity

Discussion

Member takes

Implication

Key Points

Cite This Study

Antifouling Polymer Membranes with Subnanometer Size Selectivity

Discussion

Member takes

Implication

Key Points

Cite This Study

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