Manipulating membrane permeability and protein rejection of UV-modified polypropylene macroporous membrane

Yu, Hai‐Yin; Zhou, Jin; Gu, Jia‐Shan; Yang, Song

doi:10.1016/j.memsci.2010.08.016

Cited by 31 publications

(5 citation statements)

References 40 publications

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“…Layer-by-layer assembly mainly works well on polar surfaces; spin-coating is limited to modification of small and flat substrates. Polymers are commonly pretreated to generate surface polarity or reactive sites for subsequent physical modifications or chemical linkages. − …”

Section: Introductionmentioning

confidence: 99%

Interpenetration of Polyethylene Terephthalate with Biocidal Quaternary Ammonium/N-Chloramine Polysiloxane in Supercritical CO₂

Chen

Ren

et al. 2017

Ind. Eng. Chem. Res.

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Antibacterial modification of polymers with potent biocides via an efficient and universal approach is very desirable in both academia and industry. A polysiloxane with both quaternary ammonium and N-chloramine was prepared via a facile three-step synthetic route. Poly(methylhydrosiloxane) (PMHS) was first reacted with 2-(dimethylamino)ethyl acrylate to introduce an ending tertiary amine that was subsequently quaternized with 3-(3-chloropropyl)-5,5-dimethylhydantoin (CPDMH). The 5,5-dimethylhydantoin moiety was then transformed into its N-chloramine counterparts by chlorination with tert-butyl hypochlorite to produce quaternary ammonium (quat)/N-chloramine polysiloxane. The CO2-philic quat/N-chloramine polysiloxane was interpenetrated into polyethylene terephthalate (PET) in supercritical carbon dioxide (scCO2) and formed a 70 nm biocidal layer. The synthetic procedures and interpenetration results were characterized with Fourier transform infrared spectroscopy (FTIR), 1H NMR, scanning electron microscopy (SEM), and X-ray photoelectron spectrocsopy (XPS). The incorporation of quaternary ammonium and N-chloramine exhibited improved synergetic biocidal performance against Staphylococcus aureus and Escherichia coli, providing a complete kill of a 7-log reduction of both species within a contact time of 10 min. The polysiloxane interpenetration layer was stable and the rechargeability of lost chlorine was good when the layer was subjected to repeated washing, storage, and UV irradiation. This modification procedure uses ecologically responsible CO2 as solvent and is expected to be applicable to substrates of other chemistry since it does not rely on chemical linkage.

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Section: Introductionmentioning

confidence: 99%

Interpenetration of Polyethylene Terephthalate with Biocidal Quaternary Ammonium/N-Chloramine Polysiloxane in Supercritical CO₂

Chen

Ren

et al. 2017

Ind. Eng. Chem. Res.

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“…The used method and experimental setup for the membrane surface modification were described in [19].…”

Section: Surface Modification Of Membranementioning

confidence: 99%

“…In the present work, to improve the membrane permeability and to enhance the adsorption of the semiconductors, hydrophilic surface modification of polypropylene macroporous membrane was carried out. Grafting 2-hydroxyethyl methacrylate (HEMA) onto the membrane surface was performed according to previous work [19,20]. ZnO NPs were one pot fabricated by direct precipitation; their photocatalytic activity for environmental application was carefully investigated by using decoloring methyl orange (MeOr) under sunlight.…”

Section: Introductionmentioning

confidence: 99%

Decoloring Methyl Orange under Sunlight by a Photocatalytic Membrane Reactor Based on ZnO Nanoparticles and Polypropylene Macroporous Membrane

Zhou

2013

International Journal of Polymer Science

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Decoloring methyl orange (MeOr) under sunlight was conducted in a photocatalytic membrane reactor (PMR). Zinc oxide nanoparticles (ZnO NPs) were suspended in the solution or immobilized on the membrane. The membrane was modified by grafting 2-hydroxyethyl methacrylate (HEMA) to enhance the adsorption of ZnO NPs on the hydrophobic membrane surface and improve the membrane permeability. The results show that the water fluxes through the modified membranes are higher than that through the unmodified membrane. After introducing ZnO NPs to the membrane, the water fluxes still rise with the immobilization degree of ZnO NPs. For the PMR with ZnO NPs in suspension, the photocatalytic decoloration percent (PDP) was over 98.2% after 40 min under sunlight. For the PMR with ZnO NPs immobilized on the membrane, the max of PDP was 74.3% after 6 h under sunlight, and maintained at 72% after repeated uses for five times. These results demonstrate that photocatalytic membrane reactor (PMR) based on ZnO NPs and polypropylene macroporous membrane(PPMM) could be applied in decoloring dyes.

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“…In our previous work, a photoinduced RAFT grafting polymerization of functional block polymers was grafted onto the membrane surfaces [18,19], and dual responsive membranes were achieved [20]. However, the grafting chains could not be prepared and characterized separately.…”

Section: Introductionmentioning

confidence: 99%

Manipulating membrane permeability and protein rejection of UV-modified polypropylene macroporous membrane

Cited by 31 publications

References 40 publications

Interpenetration of Polyethylene Terephthalate with Biocidal Quaternary Ammonium/N-Chloramine Polysiloxane in Supercritical CO₂

Interpenetration of Polyethylene Terephthalate with Biocidal Quaternary Ammonium/N-Chloramine Polysiloxane in Supercritical CO₂

Decoloring Methyl Orange under Sunlight by a Photocatalytic Membrane Reactor Based on ZnO Nanoparticles and Polypropylene Macroporous Membrane

Surface modification of polypropylene macroporous membrane by marrying RAFT polymerization with click chemistry

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Manipulating membrane permeability and protein rejection of UV-modified polypropylene macroporous membrane

Cited by 31 publications

References 40 publications

Interpenetration of Polyethylene Terephthalate with Biocidal Quaternary Ammonium/N-Chloramine Polysiloxane in Supercritical CO2

Interpenetration of Polyethylene Terephthalate with Biocidal Quaternary Ammonium/N-Chloramine Polysiloxane in Supercritical CO2

Decoloring Methyl Orange under Sunlight by a Photocatalytic Membrane Reactor Based on ZnO Nanoparticles and Polypropylene Macroporous Membrane

Surface modification of polypropylene macroporous membrane by marrying RAFT polymerization with click chemistry

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Product

Resources

About

Interpenetration of Polyethylene Terephthalate with Biocidal Quaternary Ammonium/N-Chloramine Polysiloxane in Supercritical CO₂

Interpenetration of Polyethylene Terephthalate with Biocidal Quaternary Ammonium/N-Chloramine Polysiloxane in Supercritical CO₂