Effect of Crosslinker Amount on Properties of Poly Phenylacrylamide Gels

Abed, Noor; Mohammed, Ameen Hadi; Musa, Aminu

doi:10.21608/ejchem.2021.44316.2900

Cited by 3 publications

(5 citation statements)

References 15 publications

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“…The low values of weight loss of polymer during swelling can be attributed to the limited number of linear hydrophilic polymer chains and high crosslinking density. Noor et al obtained similar findings when the effect of crosslinker on swelling properties of phenyl acrylamide was studied [22].…”

Section: Swelling Behaviormentioning

confidence: 54%

Synthesis and characterization of modified PVC waste with different diamines for Hg(II) removal

Hadi Mohammed,

Hamed,

Aldabbagh

2023

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PVC waste, after removing contamination (P1), was cross-linked with 1,3-diaminopropane, hexamethylenediamine and 1,4-diaminonaphthalene (P2, P3 and P4). The cross-linked PVC was characterized by FTIR, SEM and CHN elemental analysis. The influence of the type of crosslinking agent on the thermal properties and swelling of PVC was also investigated. P3 was characterized by the highest water absorption, and P4 had the best thermal stability. All cross-linked polymers showed good effectiveness in removing Hg(II) ions, especially PVC modified with hexamethylenediamine.

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Section: Swelling Behaviormentioning

confidence: 54%

Synthesis and characterization of modified PVC waste with different diamines for Hg(II) removal

Hadi Mohammed,

Hamed,

Aldabbagh

2023

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“…The literature reports several works on the correlation between the properties of hydrogels and the crosslinker/monomer ratio chosen for the synthesis. Abed et al (2021) proved that increasing MBAA in hydrogel syntheses decreased swelling parameters. Su et al (2016) verified the same trend in the swelling behavior of cellulose-based cryogels.…”

Section: Introductionmentioning

confidence: 92%

“…As expected, the lower interconnected crosslinked monolithic specimen (sample C) exhibits a higher water-absorption capacity than sample A, having a higher crosslinked structure. Abed et al (2021) reported that the heightened presence of crosslinks within the cryogel diminishes the available free volumes between macromolecular chains, making them more susceptible to water penetration. Additionally, another contributing factor that affects swelling could be related to the elevated number of crosslinking bridges that hinder the mobility of macromolecular chains, thus impeding water penetration [17].…”

Section: Swellingmentioning

confidence: 99%

“…Wan et al (2015) demonstrated the enhancement of the temperature-resistance of hydrogels for higher crosslinker amounts, lowering the space among the grids of the three-dimensional network. As a consequence, an increase in rigidity and temperature resistance was observed [17][18][19]. However, since the morphology and pore connectivity between hydro and cryogels are significantly different, the aforementioned studies cannot be merely transferred to the latter system.…”

Section: Introductionmentioning

confidence: 99%

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How the Crosslinker Amount Influences the Final Properties of Hydroxyethyl Methacrylate Cryogels

Proietto Salanitri,

Luzzi,

Caretti

et al. 2024

Gels

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The investigation of the mechanical, thermal, and adsorption properties of hydroxyethyl methacrylate (HEMA) cryogels as a function of a reactant ratio is herein reported to better address materials for specific applications. To this aim, cryogels have been synthesized using different monomer/crosslinker (N,N′-methylene-bisacrylamide–MBAA) ratios. The study of SEM images made it possible to identify the trend in the material’s macroporosity. As would be expected, the average measured pore width decreased as the amount of MBAA increased while the number of pores grew. Swelling capacity ranges from 8.7 gW/ggel (grams of water per gram of gel) to 9.3 gW/ggel. These values are strictly connected with the pore’s size and distribution, revealing that the water uptake for the most crosslinked sample is inferior to other samples. The equilibrium-adsorption capacity (Qe) towards the methylene violet (MV) was also assessed, revealing no remarkable differences after 24 h of a batch test. As expected, thermogravimetric analysis (TGA) also showed no significant changes in stability that ranged from a maximum weight loss temperature (T Max) of 420 °C to 425 °C, which increased as a function of crosslinker content. Conversely, compression strength measurements showed a notable difference of about 50% in modulus (Ec), moving from the higher to the lower HEMA/MBAA ratio. These new comparative results indicate how slight variations in the reactant’s ratio can steadily improve the mechanical properties of the HEMA cryogel without affecting its adsorption efficiency. This can be helpful in the design of materials for water and energy purposes. Since swelling properties are needed in the case of biomedical applications, the HEMA/MBAA ratio should be tuned versus high values.

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“…New scientifically and commercially relevant materials can be obtained when two distinct monomers with various physical and or chemical attributes are incorporated in the same polymer molecule at different ratios [1,2]. Hydrophilicity, softness and oxygen permeability are the qualities that polymeric materials must fulfil to permit their use in certain medical application fields [3,4].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of (Methyl Methacrylate/Phenyl Acrylamide) Hydrogel for Biomedical Applications

Abed

Mohammed

2021

Egypt. J. Chem.

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The basic explorations of structure property correlations and the variety of commercial and biological applications all attest to the fact that amphiphilic is highly useful. In this work, the monomer phenyl acrylamide was synthesized by reacting acrylamide with chloro benzene in the presence of pyridine. Two series of Poly (phenyl acrylamide-co-methyl methacrylate) (poly(PAAm-co-MMA)) hydrogels have been prepared, series 1 composed of PAAm/MMA copolymers covering a range of composition (60-90% PAAm) while series 2 composed of 90PAAm/10MMA copolymer containing 1, 2, 3, and 4 wt% of N,N'-methylenebisacrylamide (MBAA) as crosslinker. Fourier transform infrared spectroscopy (FT-IR) was used to characterize the resulting monomer and polymers. The effects of the monomer ratio and added crosslinker on the swelling behavior and mechanical properties of poly (PAAm-co-MMA) hydrogels were investigated. Swelling parameters such as volume fraction of polymer (φ2), weight loss during swelling were determined. Depending on shear and Young's modulus (G and E), network parameters such as polymer-solvent interaction (χ), cross-link density (ve), and molecular mass between cross-links (Mc) were calculated. The ability of series 1 hydrogels for use in controlled release of drugs such as ciprofloxacin was also studied. Results revealed that during the first 10 hours, most of the drug load is released.

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Effect of Crosslinker Amount on Properties of Poly Phenylacrylamide Gels

Cited by 3 publications

References 15 publications

Synthesis and characterization of modified PVC waste with different diamines for Hg(II) removal

Synthesis and characterization of modified PVC waste with different diamines for Hg(II) removal

How the Crosslinker Amount Influences the Final Properties of Hydroxyethyl Methacrylate Cryogels

Synthesis and Characterization of (Methyl Methacrylate/Phenyl Acrylamide) Hydrogel for Biomedical Applications

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