Synthesis and anticorrosive application of biomimetic dopamine-based cationic polyelectrolytes derived from diallylammonium salts

Arshad, Zeeshan; Ali, Shaikh A.

doi:10.1016/j.polymer.2022.125537

Cited by 3 publications

(3 citation statements)

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“…The strong peak at 1459 cm –1 was assigned to C–H bending. The absence of a strong peak of CC (alkene) at ∼1604 cm –1 indicates the formation of the polymer with the disappearance of the alkene motifs …”

Section: Resultsmentioning

confidence: 99%

“…The absence of a strong peak of C�C (alkene) at ∼1604 cm −1 indicates the formation of the polymer with the disappearance of the alkene motifs. 44 The proton ( 1 H) NMR has provided information regarding the successful synthesis of the poly(DADMAC-co-DTDAC-co-DADAHC). The disappearance of the alkene protons is key in successfully recognizing the synthesis.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…A Spectra/Por (Spectrum) membrane having a 3500 molecular weight cutoff (MWCO) was used for dialysis. DTDAC 43 and DADAHC 44 were synthesized as described. Diesel with 100% purity was obtained from the Industrial & Mechanical Services Co. Ltd. PVDF (M W = 350 KDa) was acquired from Alfa Aesar.…”

Section: ■ Introductionmentioning

confidence: 99%

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Fabrication of a New Rationally Designed Mussel-Inspired Cationic Amphiphilic Terpolymer to Enhance the Separation and Anti-Fouling Performance of Membranes

et al. 2023

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Polyvinylidene fluoride (PVDF) membrane-based systems for treating oily wastewater are prone to fouling. Herein, we introduced a novel mussel-inspired cationic amphiphilic terpolymer consisting of monomers N,N-diallyldimethylammonium chloride (DADMAC), N,N-diallyltetradecan-1-ammonium chloride (DTDAC), and mussel-inspired N,N-diallyldopamine hydrochloride (DADAHC) to improve the performance and characteristics of the PVDF membranes for oil-in-water emulsion separations. The cationic terpolymer, poly(DADMAC-co-DTDACco-DADAHC), shortened as PDDD, was synthesized in excellent yields via free radical polymerization and has good compatibility with the PVDF owing to the presence of hydrophobic long alkyl chains in DTDAC. The presence of dopamine motifs helps stabilize the PDDD-PVDF membrane by chelating with Fe 3+ ions. The water contact angle on the PDDD-incorporated PVDF membranes was reduced from 87.6 to 54.6°, demonstrating improved hydrophilicity than pristine PVDF (M-0). The incorporation of PDDD into the PVDF improved the separation efficiencies of the membrane, which reached up to 99% while treating the oil-in-water emulsions. Incorporating PDDD into PVDF has significantly enhanced the anti-fouling characteristics of the membranes, which are indicated by their remarkable flux recovery ratio (FRR) (up to 92%). The hydrophobic and hydrophilic groups worked synergetically to enhance the performance of the fabricated membrane.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%