Synergistic effect of KI on the corrosion inhibition of a poly(diallylammonium chloride)-based cyclocopolymer containing bis-cationic motifs for mild steel corrosion in 20% formic acid.

This study entails the syntheses of a homopolymer, poly(diallylammonium chloride) (3), and copolymers (8a-c) containing hydrophilic/hydrophobic pendants and their role in mitigating mild steel in aggressive 20% formic acid, a type of corrosion that is not frequently discussed in the literature. The synthesized homopolymer and copolymers were characterized by FTIR, NMR, viscometry, and TGA. Inhibitor 8b was found to be the most potent, with 81.

A sorbent containing pH-responsive chelating residues of aspartic and maleic acids for mitigation of toxic metal ions, cationic, and anionic dyes.

-Butyl hydroperoxide-initiated cycloterpolymerization of diallylaminoaspartic acid hydrochloride [(CH[double bond, length as m-dash]CHCH)NHCH(COH)CHCOH Cl] (I), maleic acid (HOCH[double bond, length as m-dash]CHCOH) (II) and cross-linker tetraallylhexane-1,6-diamine dihydrochloride [(CH[double bond, length as m-dash]CHCH)NH(CH)NH (CHCH[double bond, length as m-dash]CH) 2Cl] (III) afforded a new pH-responsive resin (IV), loaded with four COH and a chelating motif of NH⋯CO in each repeating unit. The removal of cationic methylene blue (MB) (3000 ppm) at pH 7.25 and Pb(ii) (200 ppm) at pH 6 by IV at 298, 313, and 328 K followed second-order kinetics with of 33.

A resin containing motifs of maleic acid and glycine: a super-adsorbent for adsorptive removal of basic dye pararosaniline hydrochloride and Cd(II) from water.

The cyclocopolymerization of ,-diallylglycine hydrochloride, maleic acid and 1,1,4,4-tetraallylpiperazinium dichloride afforded a cross-linked polyzwitterionic acid, which, upon treatment with NaOH, gave the corresponding cross-linked anionic polyelectrolyte (CAPE) in quantitative yield. The pH-responsive resins contained a high density of CO motifs as well as the chelating motifs of glycine residues. The resin CAPE was found to be a super-adsorbent for the removal of pararosaniline hydrochloride (PRH); having a of 1534 mg/g.

Design and Synthesis of a Dual-Purpose Superadsorbent Containing a High Density of Chelating Motifs for the Fast Mitigation of Methylene Blue and Pb(II).

Maleic acid underwent alternate copolymerization with diallylaminomethylphosphonic acid·HCl [(CH=CHCH)NHCHPOH Cl] and a cross-linker to give a new pH-responsive resin. Methylene blue (MB) removal from its 3000 ppm solution by the resin at pH 7 followed second-order kinetics with an of 34.8 kJ mol.

Fast removal of methylene blue and Hg(II) from aqueous solution using a novel super-adsorbent containing residues of glycine and maleic acid.

The alternate cyclo-copolymerization of diallylammonioethanoate [(CH=CHCH)NCHCO] and maleic acid in the presence of a cross-linker afforded a novel pH-responsive resin (90% yield). The resin has turned out to be a super-adsorbent for methylene blue (MB) removal with a q of 2101 mg g. The adsorption of the dye followed pseudo second-order kinetics with an energy of activation (E) of 31.

Scope of sulfur dioxide incorporation into alkyldiallylamine-maleic acid-SO tercyclopolymer.

Alternate copolymerization of diallylamine derivatives [(CHCH[double bond, length as m-dash]CH)NR; R = Me, (CH)PO(OEt), and CHPO(OEt)] (I)-maleic acid (MA) and (I·HCl)-SO pairs have been carried out thermally using ammonium persulfate initiator as well as UV radiation at a of 365 nm. The reactivity ratios of ≈0 for the monomers in each pair I-MA and I·HCl-SO ensured their alternation in each copolymer. However, numerous attempted terpolymerizations of I-MA-SO failed to entice MA to participate to any meaningful extent.