Hydrophilicity modification of polypropylene microfiltration membrane by ozonation

Gu, Hongbin; Wu, Jiangning; Chan, Philip K.; Turcotte, Ginette; Ye, Tianjiang

doi:10.1016/j.cherd.2011.07.003

Cited by 16 publications

(11 citation statements)

References 23 publications

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“…Similar trend was observed with polyethylene (PE) membranes exposed to ozone (Mastan et al, 2013). The similar result was also obtained with ozonation of polypropylene (PP) microfiltration membrane (Gu et al, 2012).…”

Section: Effect Of Ozonation Parameters A) Phase Of Ozonationsupporting

confidence: 83%

Surface Modification To Alleviate PVDF Membrane Fouling During Milk Protein Microfiltration

Mirriahi¹

2021

Preprint

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The interest in using polyvinylidene fluoride (PVDF) membrane in order to separate casein and serum proteins has been raised due to its significant stability. However, the high hydrophobicity of PVDF membrane causes severe fouling during filtration processes. Ozonation, a surface modification process in which polar groups would be formed on the membrane surface, is widely known for its high efficiency. In the present study, the main objective was to optimize the ozonation parameters to reach the minimum fouling while the maximum mechanical strength could be retained. The contact angle of a water droplet on the membrane surface decreased from 73.5° to 50.4° after the treatment of the membrane at the optimal gaseous phase ozonation. This indicates an increase in the hydrophilicity of the treated membrane. Also, filtration performance demonstrated a lower fouling occurrence on the treated membrane as compared to the untreated one. Although gaseous ozonation yielded a slightly better performance in comparison to the aqueous treatment, the membrane treated with aqueous phase ozonation was benefited from conserving its mechanical strength. Activated carbon helped decreasing the contact angle and fouling as compared to the non-catalytic aqueous treatment while the tensile strength was not affected

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Section: Effect Of Ozonation Parameters A) Phase Of Ozonationsupporting

confidence: 83%

Surface Modification To Alleviate PVDF Membrane Fouling During Milk Protein Microfiltration

Mirriahi¹

2021

Preprint

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“…The process leads to the formation of one superoxide anion (•O 2 ) and one hydroperoxyl radical (•HO 2 ) [50]. The hydroperoxyl radicals are much stronger oxidant than ozone itself [51].…”

Section: Dd Performance Of the Membranes Oxidized By Ozonementioning

confidence: 99%

Crosslinked PVA-based hybrid membranes containing di-sulfonic acid groups for alkali recovery

Dai

Mondal

et al. 2017

Separation and Purification Technology

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“…Surface modification of PP has been mainly achieved by chemical and physical treatments. In the former, a functional group, such as a hydroxy and carboxy group, was generated by using a nitric acid or ozone [ 22 , 23 ]. However, these chemical treatments require hazardous reagents to oxidize the highly chemical stabile PP surface.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of the Surface Properties on Polypropylene Film Using Side-Chain Crystalline Block Copolymers

et al. 2020

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The consumption of polypropylene (PP) has significantly increased over that of other materials because of its light weight, easy molding, and high mechanical strength. However, the applications of PP are limited, owing to the lack of surface properties, especially with respect to adhesive properties and hydrophilicity. In this study, we developed a surface modification method for enhancing the adhesive properties and hydrophilicity on the PP surface using a side-chain crystalline block copolymer (SCCBC). This method was simple and involved the dipping of a PP film in a diluted SCCBC solution. The optimized modification conditions for enhancing the adhesive properties of PP were investigated. The results revealed that the adhesion strength of PP modified with the SCCBC of behenyl acrylate and 2-(tert-butylamino)ethyl methacrylate was enhanced to 2.00 N/mm (T-peel test) and 1.05 N/mm2 (tensile shear test). In addition, the hydrophilicity of PP modified with the SCCBC of behenyl acrylate and di(ethylene glycol)ethyl ether acrylate was enhanced to a water contact angle of 69 ± 4°. Surface analysis was also performed to elucidate a plausible mechanism for PP modification by the SCCBCs. This surface modification method is facile and enhances desirable properties for the wide application of PP.

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Hydrophilicity modification of polypropylene microfiltration membrane by ozonation

Cited by 16 publications

References 23 publications

Surface Modification To Alleviate PVDF Membrane Fouling During Milk Protein Microfiltration

Surface Modification To Alleviate PVDF Membrane Fouling During Milk Protein Microfiltration

Crosslinked PVA-based hybrid membranes containing di-sulfonic acid groups for alkali recovery

Enhancement of the Surface Properties on Polypropylene Film Using Side-Chain Crystalline Block Copolymers

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