Preparation and absorption studies of poly(acrylic acid-co-2-acrylamide-2-methyl-1-propane sulfonic acid)/graphene oxide superabsorbent composite

Tang, Yaoji; Guan, Chengdong; Liu, Yangwenyi; Zhang, Zhentao; Li, Baoming; Zhu, Linhui

doi:10.1007/s00289-018-2446-3

Cited by 23 publications

(12 citation statements)

References 26 publications

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“…Besides, the CTA/PTZA–20 membrane shows a high WH (31.2%) compared to the other fabricated membranes, indicating that the hydrophilic nature of acrylate can absorb moisture over the surface of the membrane 39 . Interestingly, the CTA/PTZA–30 membrane shows a lower water absorption rate of 22.2% because the steric hindrance tends to block the water molecules that enter the membrane, so the movement of bound water is highly arrested inside the membrane 40,41 . The SR, presented in Table 3, was less than 3% for all the membranes.…”

Section: Resultsmentioning

confidence: 94%

Composite proton exchange membrane of cellulose triacetate polymer integrated with polyacrylic acid and triazole based copolymer for balanced proton conduction and methanol permeability

Deepa

Sasikumar

Elakkiya

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND Proton exchange membranes (PEMs) could prompt proton transport with long‐term oxidative and hydrolytic durability with little methanol crossover under humidified conditions. Cellulose triacetate (CTA)‐based PEMs were fabricated by reinforcing with 4 wt.% of polyacrylic acid (PAA) and polymerized triazole (PTZA) combination of acrylic acid/triazole acrylate copolymer. RESULTS The presence of PAA and PTZA copolymer in the CTA membrane was confirmed using Fourier transform infrared spectroscopy and X‐ray diffraction. The variations of proton conductivity, methanol crossover and water uptake of the PTZA copolymer‐reinforced CTA matrix were evaluated. Higher proton conductivity of 2.313 × 10−4 S cm−1 and minimal methanol permeability of 1.773 × 10−7 cm2 s−1 were obtained for the CTA/PTZA–20 membrane compared to a pristine CTA membrane. Furthermore, the oxidative tolerability was about 99.6% for CTA/PAA membrane, and hydrolytic stability was 97.78% for the CTA/PTZA–20 membrane, higher than that of the pristine CTA membrane. CONCLUSIONS The increase in proton conduction compared to pristine CTA membrane could be attributed to the presence of triazole moiety, which acts as a proton facilitator in the conduction process. Additionally, an increase in hydrolytic stability, oxidative tolerability and lower methanol crossover results indicated that the PTZA copolymer‐reinforced CTA PEMs have potential for use in fuel cell applications. © 2021 Society of Chemical Industry (SCI).

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Section: Resultsmentioning

confidence: 94%

Composite proton exchange membrane of cellulose triacetate polymer integrated with polyacrylic acid and triazole based copolymer for balanced proton conduction and methanol permeability

Deepa

Sasikumar

Elakkiya

et al. 2021

J of Chemical Tech & Biotech

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“…So, the water loss rate gradually slows down. 44,45 As can be seen from Figure 11, all the three composites showed good water retention capacity under pressurized conditions. The water retention of PAABF-CMC and PAABF-CA composites is similar and slightly better than that of PAA.…”

Section: Water Retention Of Paabf Compositesmentioning

confidence: 86%

“…Due to the steric hindrance and gravity of hydrophilic groups, the movement of bound water in the composites is hindered. So, the water loss rate gradually slows down 44,45. As can be seen from Figure11, all the three composites showed good water retention capacity under pressurized conditions.…”

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confidence: 89%

Thermally stable poly (acrylic acid‐acrylamide‐biomass‐fly ash) composites with improved temperature resistance and salt resistance

Liu

Yan

Zhao

et al. 2021

J of Applied Polymer Sci

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Engineering functional materials from biomass and industrial waste is of great significance for sustainable chemistry and engineering. Bio-based poly (acrylic acid-acrylamide-biomass-fly ash) (PAABF) composites with appropriate densities were designed. Graft copolymer composites were prepared for the first time by combining biomass and fly ash as graft materials with acrylic acid and acrylamide as monomers. The results showed that PAABF composites have a three-dimensional network structure. Cellulosic biomass (sodium carbo-xymethyl cellulose, cattail cellulose) and fly ash improved the thermal stability, water absorption, water retention, temperature resistance, and salt resistance of the composites. PAABF composites can be used as water plugging profile control agent for oilfield with high-salinity and deep burial.

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“…Increase the speci c surface area. Increasing the speci c surface area of superabsorbent polymers can increase the contact area between water and polymer particles [21], but excessively reducing the particle size of polymer can have the opposite effect. If the superabsorbent polymers have multi-porous structure, it can increase the contact area with water to improve the water absorption rate [22].…”

Section: Introductionmentioning

confidence: 99%

Superabsorbent Polymer with Excellent Water/Salt Absorbency and Water Retention, and Fast Swelling Properties for Preventing Soil Water Evaporation

et al. 2022

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Superabsorbent polymers have important applications in many elds, but insu ciency of water/salt absorbency, water retention, and swelling rate limit its application development. Herein, we fabricated HEC-g-P (AA-co-AMPS)/laterite by aqueous solution polymerization, the structure and morphology of the superabsorbent polymer were characterized by FTIR, SEM and TG/DTG. The optimal water absorbency of the superabsorbent polymer were 1294 g/g, 177 g/g, and 119 g/g in distilled water, tap water, and 0.9 wt% NaCl solution, respectively. The superabsorbent polymer had good water retention and re-swelling properties at different temperatures, and fast water absorption rate, and reached swelling equilibrium at 5 min. The swelling mechanism of the superabsorbent polymer was explained by the pseudo-second-order swelling kinetics model and Ritger-Peppas model. The effect of the amount of hydrogel on the water evaporation rate in soil was studied, and it had a good effect.

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Preparation and absorption studies of poly(acrylic acid-co-2-acrylamide-2-methyl-1-propane sulfonic acid)/graphene oxide superabsorbent composite

Cited by 23 publications

References 26 publications

Composite proton exchange membrane of cellulose triacetate polymer integrated with polyacrylic acid and triazole based copolymer for balanced proton conduction and methanol permeability

Composite proton exchange membrane of cellulose triacetate polymer integrated with polyacrylic acid and triazole based copolymer for balanced proton conduction and methanol permeability

Thermally stable poly (acrylic acid‐acrylamide‐biomass‐fly ash) composites with improved temperature resistance and salt resistance

Superabsorbent Polymer with Excellent Water/Salt Absorbency and Water Retention, and Fast Swelling Properties for Preventing Soil Water Evaporation

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