Preparation and Characterization of Novel Polymeric Betaines Based on Aminocrotonates

Kudaibergenov, Sarkyt E.; Bimendina, Larisa A.; Yashkarova, M.G.

doi:10.1080/10601320701407995

Cited by 18 publications

(16 citation statements)

References 21 publications

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“…All of the experiments were conducted in triplicate under identical conditions. [35,36]. The results are presented in Figure 1a and -12 -remained unchanged in the PCEGC/Cu complex.…”

Section: Sorption/desorption Cycles Experimentsmentioning

confidence: 83%

A new water-soluble polycarbobetaine showing high selectivity toward copper

Mouton

Turmine

Coudane

2016

Chemical Engineering Journal

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In this study, betaine-type polyampholytes (polycarbobetaines, PCBets) are investigated as complexing agents of metal ions. Because PCBets are pH-sensitive due to the presence of amine and carboxylic acid groups, the complexation of copper was monitored at various pH values (from 3 to 6) by UV-vis spectroscopy and/or electrochemical measurements. The results obtained for the complexation of copper were greatly enhanced as the pH increased and reached 264 ± 11 mg g-1 at pH=6. This maximum adsorption capacity rivals the recent results obtained for molecules of environmental interest, such as chitosan. The selectivity of the target PCBets for copper was indicated in the presence of nickel and/or cobalt and partially accounts for the interest in this material and demonstrated the relevance of using PCBet in environmental applications (such as metal recovery from wastes/wastewaters or environmental sensors). The efficiency of copper adsorption was maintained over 5 cycles of PCBet reuse (91 ± 4 %).

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“…All of the experiments were conducted in triplicate under identical conditions. [35,36]. The results are presented in Figure 1a and -12 -remained unchanged in the PCEGC/Cu complex.…”

Section: Sorption/desorption Cycles Experimentsmentioning

confidence: 83%

A new water-soluble polycarbobetaine showing high selectivity toward copper

Mouton

Turmine

Coudane

2016

Chemical Engineering Journal

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“…The main functional groups were identified by FTIR spectroscopy for PCEAC, including the O-H stretching vibration at 3,192 cm −1 ; C-H stretching vibration at 2,939 cm −1 ; and C = O stretching vibration at 1,701 cm −1 , as previously reported for a similar structure [10,11]. The results presented in Table 1 compare the characteristic bands between PCEAC and PCEAC/Cu complex obtained in this study and in previous work [12].…”

Section: Polycarbobetaine Synthesismentioning

confidence: 77%

A water-soluble polycarbobetaine for sustainable copper recovery

Mouton¹,

Turmine²,

Coudane³

2016

Int. J. SDP

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This study targets betaine-type polymers (polycarbobetaines -PCBets) as complexing agent of metal ions. As PCBets are pH-sensitive, the adsorption isotherms of copper onto PCBet were monitored at various pH (from 3 to 6) by electrochemical measurements. The best fit to the Langmuir model translates the predominantly homogeneous distribution of the chelating groups on the polymer chains because the Langmuir equation assumes that the adsorbent surface is energetically homogeneous. The results obtained for the complexation of copper were greatly enhanced as the pH increase and reached 250 ± 10 mg g −1 at pH = 6. Such maximal adsorption capacities compete with recent results obtained for molecules of environmental interest such as chitosan, for example. The copper adsorption efficiency was shown stable for soft to hard water. The selectivity of the target PCBets for copper was indicated in the presence of nickel, cobalt, manganese, zinc, calcium or magnesium and partially accounts for the interest in this material and demonstrated the relevance of using PCBet in environmental applications such as copper recovery. The reusability of PCBet was explored by pH adjustment. The results confirm that the efficiency of copper adsorption was maintained over five cycles of PCBet reuse (99 ± 3%). A full process for copper recovery was then designed at laboratory scale for copper recovery from synthetic wastewaters.

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“…Alkylamino-but-2-enoic acid ethyl esters are more energetically stable than the alternative tautomeric forms -3-alkylamino-butyric acid ethyl esters due to conjugation of C¼C and C¼O bonds and formation of intramolecular hydrogen bonds. [21,22] Polymer Synthesis Polymerization of alkylaminocrotonates and MAA was carried out in benzene at 70 C in the presence of AIBN. Addition of methacrylic acid to alkylaminocrotonates leads to formation of betaine monomers which undergo radical polymerization in the presence of AIBN (Scheme 2).…”

Section: Monomer Synthesismentioning

confidence: 99%

“…For example, LB films of poly(N,Ndiallyl-N-octadecylamine-alt-maleic acid) as well as mixed films consisting of hydrophobic polyampholyte and two amphiphilic fluorophores À alkyl substituted rhodamine dyes À were prepared and investigated. [19,20] The preparation and characterization of polymeric betaines based on aminocrotonates was reviewed in [21] where the stereochemistry and tautomeric transitions as well as kinetics and mechanism of formation of linear and crosslinked polybetaines proceeding via Michael addition reaction were outlined.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical Properties of Hydrophobically Modified Polymeric Betaines and of Their Langmuir‐Blodgett Films

Seliverstova

Ibrayev

Shakhvorostov

et al. 2016

Macromolecular Symposia

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H 37 ) were synthesized by Michael addition reaction of alkylaminocrotonates and methacrylic acid. They were characterized by FTIR, 13 C NMR, DLS, TEM, viscometry and zeta-potential measurements. In aqueous KOH and DMSO solutions the hydrophobically modified polymeric betaines behave polyelectrolyte character. The average hydrodynamic size and zeta potential of diluted aqueous solutions of hydrophobic polybetaines containing tetradecyl-and octadecyl groups were studied as a function of pH. Anomalous low values of the isoelectric point (IEP) of amphoteric macromolecules were found to be in the range of pH 2.7-3.4. The TEM results revealed that in both aqueous KOH and DMSO media the nano-and microsized micelles and vesicles are existed. The structural organization of micelles and vesicles in water and water À DMSO mixture is discussed. Langmuir-Blodgett (LB) monolayers on the water-air interface were obtained by spreading of hydrophobic polybetaines containing tetradecyl-and octadecyl groups dissolved in THF on the subphase surface. The LB films on the subphase surface are characterized by the specific areas of 0.6 AE 0.05 nm 2 Á monomeric unit À1 at collapsed state. In the spectra of LangmuirBlodgett film the absorption band with the maximum at 255 and 270 nm was observed.

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Preparation and Characterization of Novel Polymeric Betaines Based on Aminocrotonates

Cited by 18 publications

References 21 publications

A new water-soluble polycarbobetaine showing high selectivity toward copper

A new water-soluble polycarbobetaine showing high selectivity toward copper

A water-soluble polycarbobetaine for sustainable copper recovery

Physicochemical Properties of Hydrophobically Modified Polymeric Betaines and of Their Langmuir‐Blodgett Films

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