Synthesis and swelling behavior of metal-chelating superabsorbent hydrogels based on sodium alginate-g-poly(AMPS-co-AA-co-AM) obtained under microwave irradiation

Mohammad, Noor; Atassi, Yomen; Tally, Mohammad

doi:10.1007/s00289-017-1967-5

Cited by 53 publications

(23 citation statements)

References 36 publications

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“…Soluble starch is added to transport the CC groups of AM into C−C under the support of the initiator APS. Free radicals formed on the initiated chain, and numerous of free monomers participate in chain growth . Simultaneously, under the action of the crosslinking agent MBA, a three dimensional network is formed by numerous long chains.…”

Section: Resultsmentioning

confidence: 99%

“…Free radicals formed on the initiated chain, and numerous of free monomers participate in chain growth. [17,18] Simultaneously, under the action of the crosslinking agent MBA, a three dimensional network is formed by numerous long chains. Hydrophobic monomer NaAMC 14 S could contribute to the network formation and gel intensity because it contains hydrocarbyl groups that participate in hydrophobic associations, including electrostatic interactions and complexation.…”

Section: Ft-ir Analysismentioning

confidence: 99%

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Synthesis and Swelling Behavior of Super-Absorbent Soluble Starch-g -poly(AM-co -NaAMC₁₄ S) Through Graft Copolymerization and Hydrolysis

et al. 2019

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By introducing sodium 2‐acrylamido‐tetradecanesulfonate (NaAMC14S) to graft copolymerization of soluble starch and acrylamide (AM), a novel super absorbent resin (SAR) of soluble starch‐g‐poly(AM‐co‐NaAMC14S) (SR‐14) is synthesized. Polymer gels are hydrolyzed with sodium hydroxide (NaOH) to convert the function group −CONH2 to −COO‐. The structures and qualitative changes of the polymer gels are characterized through Fourier transform infrared spectroscopy (FT‐IR), scanning electron microscopy (SEM), elemental analysis, and rheometer. Results show the polymer gels through the hydrolysis by NaOH increased the water absorbency of the final SR‐14 resin from 31.71 to 1183.43 g g−1 as the degree of hydrolysis (DH) increased from 0 to 80%. Drastic increases in the storage and loss modulus of SR‐14 reflected the intensive molecular structural changes induced by the addition of NaAMC14S. The changes in the molecular structures of SR‐14 can be attributed to hydrophobic associations among long‐chain alkane. Soluble starch‐g‐poly(AM‐co‐NaAMC14S) exhibits the maximum water absorbency of 2536.77 g g−1 in distilled water and 92.98 g g−1 in 0.9 wt.% NaCl solution. In the absence of NaAMC14S, however, the water absorbency of soluble starch‐g‐poly(AM) decreases to 1222.27 g g−1 in distilled water and to 62.29 g g−1 in 0.9 wt.% NaCl solution. Results indicate that NaAMC14S has potential applications as a material that can enhance the water absorbency of SAR.

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Section: Resultsmentioning

confidence: 99%

Section: Ft-ir Analysismentioning

confidence: 99%

Synthesis and Swelling Behavior of Super-Absorbent Soluble Starch-g -poly(AM-co -NaAMC₁₄ S) Through Graft Copolymerization and Hydrolysis

et al. 2019

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“…Figure 1 represents a suggested mechanistic pathway of the copolymerization. The persulfate ion decomposes upon heating in presence of TEMED to produce hydrogen sulfate anionradicals that abstract hydrogen atoms from the hydroxyl groups of chitosan to form macro-radicals [31]. The macroradical centers initiate the graft polymerization of acrylic monomers.…”

Section: Preparation and Characterization Of Cts-g-poly(amps-co-aa-co-am)mentioning

confidence: 99%

“…The macroradical centers initiate the graft polymerization of acrylic monomers. The presence of crosslinking agent (MBA) leads to a crosslinked structure [31].…”

Section: Preparation and Characterization Of Cts-g-poly(amps-co-aa-co-am)mentioning

confidence: 99%

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Antimicrobial Chitosan-G-poly(AMPS-Co-AA-Co-AM)/Ground Basalt Composite Hydrogel: Synthesis and Characterization

said¹,

Atassi²,

Tally³

et al. 2018

Preprint

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Polymeric Hydrogels—A Promising Platform in Enhancing Water Security for a Sustainable Future

Loo

Vásquez

Athanassiou

et al. 2021

Adv Materials Inter

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anthropogenic activities that have led to saline intrusion and contamination of the existing freshwater sources, making the current approaches for water treatment even more difficult and costly. [2][3][4] This, in combination with the continuously rising global water demand, results in a rather pessimistic prediction that an additional 2000 billion m 3 of freshwater supply will be required by 2030 to meet the global demand, assuming no gains on the current state of water-production capacity and efficiency. [5,6] As the existing freshwater sources are being depleted, there is a growing need for utilization of a broader range of water sources beyond the conventional ones, that is, brackish water, seawater, wastewater, and atmospheric moisture. [7] On top of that, there is a call for a greater focus on enhancing water security, particularly for the poor and vulnerable populations, as water scarcity is more critical in these geographical regions due to the lack of access to conventional infrastructure and power sources to produce clean water. [1,8,9] This, in addition to the increasing intensity and frequency of climate-related disasters, present unique demands, such as simple and off-grid operations, for water technologies (WTs) that can be deployed to manage the constraints imposed by these circumstances. [10]

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Synthesis and swelling behavior of metal-chelating superabsorbent hydrogels based on sodium alginate-g-poly(AMPS-co-AA-co-AM) obtained under microwave irradiation

Cited by 53 publications

References 36 publications

Synthesis and Swelling Behavior of Super-Absorbent Soluble Starch-g -poly(AM-co -NaAMC₁₄ S) Through Graft Copolymerization and Hydrolysis

Synthesis and Swelling Behavior of Super-Absorbent Soluble Starch-g -poly(AM-co -NaAMC₁₄ S) Through Graft Copolymerization and Hydrolysis

Antimicrobial Chitosan-G-poly(AMPS-Co-AA-Co-AM)/Ground Basalt Composite Hydrogel: Synthesis and Characterization

Polymeric Hydrogels—A Promising Platform in Enhancing Water Security for a Sustainable Future

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Synthesis and swelling behavior of metal-chelating superabsorbent hydrogels based on sodium alginate-g-poly(AMPS-co-AA-co-AM) obtained under microwave irradiation

Cited by 53 publications

References 36 publications

Synthesis and Swelling Behavior of Super-Absorbent Soluble Starch-g -poly(AM-co -NaAMC14 S) Through Graft Copolymerization and Hydrolysis

Synthesis and Swelling Behavior of Super-Absorbent Soluble Starch-g -poly(AM-co -NaAMC14 S) Through Graft Copolymerization and Hydrolysis

Antimicrobial Chitosan-G-poly(AMPS-Co-AA-Co-AM)/Ground Basalt Composite Hydrogel: Synthesis and Characterization

Polymeric Hydrogels—A Promising Platform in Enhancing Water Security for a Sustainable Future

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Synthesis and Swelling Behavior of Super-Absorbent Soluble Starch-g -poly(AM-co -NaAMC₁₄ S) Through Graft Copolymerization and Hydrolysis

Synthesis and Swelling Behavior of Super-Absorbent Soluble Starch-g -poly(AM-co -NaAMC₁₄ S) Through Graft Copolymerization and Hydrolysis