Infrared study of the complexation of poly(acrylic acid) with poly(acrylamide)

Moharram, M. A.; Balloomal, L. S.; El-Gendy, Hazem

doi:10.1002/(sici)1097-4628(19960207)59:6<987::aid-app12>3.3.co;2-o

Cited by 24 publications

(31 citation statements)

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“…Some aspects are readily apparent. For example, in the case of Cu-free hydrogels, the spectra show a weak but well-defined band at 1628 cm À1 , corresponding to the overlapped stretching vibration of the carbonyl group from both AA and AM as well as the NH bending [38]; intense bands at 3445 (Fd1-1) and 3430 (Fd2-10) cm À1 are observed due to the overlapping absorption bands of O-H (from AA + hydrogen bonding) and stretching vibrations of NH 2 groups; the absorption bands in the 1150-1300 cm À1 region are due to the overlap of the stretching C-N and C-O coupled with the bending of O-H groups [39]; absorption bands at 1448 and 1434 cm À1 are due to the scissoring and bending vibrations of CH 2 and CH-CO groups, respectively [40]. On the other hand, copper uptake showed significant changes in the spectra ( Fig.…”

Section: Ftir Resultsmentioning

confidence: 99%

Removal of Cu(II) ions from aqueous streams using poly(acrylic acid-co-acrylamide) hydrogels

Orozco-Guareño

Santiago-Gutiérrez

Morán-Quiroz

et al. 2010

Journal of Colloid and Interface Science

113

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Section: Ftir Resultsmentioning

confidence: 99%

Removal of Cu(II) ions from aqueous streams using poly(acrylic acid-co-acrylamide) hydrogels

Orozco-Guareño

Santiago-Gutiérrez

Morán-Quiroz

et al. 2010

Journal of Colloid and Interface Science

113

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“…[1][2][3][4][5][6][7][8][9][10][11][12][13] Also, IR spectroscopy techniques have been used in the structural characterization of bones, HAs, and the compounds resulting from their interactions with water-soluble synthetic polymers. [14][15][16][17][18][19][20][21] An HA [Ca 10 (PO 4 ) 6 (OH) 2 ] implant of biological origin was also prepared. 7 The natural apatite, prepared from compact bone, was compared with synthetic hydroxyapatite (SHA).…”

Section: Introductionmentioning

confidence: 99%

Application of Fourier transform infrared spectroscopy to study the interactions of poly(acrylic acid) and mixtures of poly(acrylic acid) and polyacrylamide with bone powders and hydroxyapatites

Moharram

Allam

2007

J of Applied Polymer Sci

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Fourier transform infrared (FTIR) spectroscopy was used to study the interactions of aqueous solutions of poly(acrylic acid) (PAA) and mixtures of aqueous solutions of PAA and polyacrylamide (PAAm) with chemically and thermally treated bone powders (BPs) and two commercial hydroxyapatites (HAs). An analysis of the spectra of the precipitates that resulted from the mixtures of PAA and the chemically treated samples of BP revealed that the spectra exhibited three new bands at 1544, 1552, and 1661 cm 21. The first band was attributed to the formation of calcium-polycarboxylate resulting from the interaction between the carboxylic acid groups of PAA and the calcium ions of BP. The appearance of the other two bands, in addition to the disappearance of the band corresponding to the absorption of the acid groups of PAA, provided strong evidence for the existence of other interactions between the carboxylic acid groups and the amide groups of the organic matrix of BP. On the other hand, the FTIR spectra of the samples that resulted from the mixture of PAA and thermally treated BP and the two commercial HAs showed only a new absorption band at 1544 cm 21. The interactions of mixtures of the aqueous solutions of PAA and PAAm, adjusted at low or high pH values, with the different BPs and HAs were examined. The mixtures of the aqueous solutions of PAA and PAAm interacted with the different BPs and two HAs, resulting in the formation of ternary PAA-BP-PAAm and PAA-HA-PAAm complexes.

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“…In the hydrogels, GO-g-PAA and rGO-g-PAA served as not only nanofillers but also multifunctional physical crosslinkers through hydrogen bonds existed between the grafted PAA chains and PAM matrix. 25,26 Raman spectroscopy was used to confirm the successful reduction of GO-g-PAA in PAM hydrogel matrix, and Gel0.9 and rGel0.9 were selected for comparative study. As shown in Figure 3(a), characteristic D band and G band appeared in the Raman spectra of Gel0.9 and rGel0.9.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of tough, self‐recoverable, and electrically conductive hydrogels byin situreduction of poly(acrylic acid) grafted graphene oxide in polyacrylamide hydrogel matrix

Wang

et al. 2019

J of Applied Polymer Sci

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Developing electrically conductive hydrogels with good electronic properties and excellent mechanical performance is significant to their potential applications. In this article, we present a strategy to fabricate tough, self‐recoverable and electrically conductive hydrogels containing reduced graphene oxide (rGO). Poly(acrylic acid) grafted graphene oxide (GO‐g‐PAA) was synthesized and incorporated into chemically crosslinked polyacrylamide (PAM) networks to obtain GO‐g‐PAA/PAM hydrogels, which were further treated with ascorbic acid solution at ambient temperature to give rGO‐g‐PAA/PAM hydrogels. The interfacial interaction between GO/rGO and hydrogel matrix was improved by reversible hydrogen bonds between the grafted PAA chains and PAM matrix. Consequently, both GO‐g‐PAA/PAM and rGO‐g‐PAA/PAM hydrogels exhibited improved tensile properties, excellent energy dissipation, and rapid self‐recovery. The in situ chemical reduction of GO‐g‐PAA in hydrogel matrix endowed rGO‐g‐PAA/PAM hydrogels with satisfactory electrical conductivity and obvious resistance change upon stretching. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48781.

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Infrared study of the complexation of poly(acrylic acid) with poly(acrylamide)

Cited by 24 publications

References 0 publications

Removal of Cu(II) ions from aqueous streams using poly(acrylic acid-co-acrylamide) hydrogels

Removal of Cu(II) ions from aqueous streams using poly(acrylic acid-co-acrylamide) hydrogels

Application of Fourier transform infrared spectroscopy to study the interactions of poly(acrylic acid) and mixtures of poly(acrylic acid) and polyacrylamide with bone powders and hydroxyapatites

Fabrication of tough, self‐recoverable, and electrically conductive hydrogels byin situreduction of poly(acrylic acid) grafted graphene oxide in polyacrylamide hydrogel matrix

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