Preparation and Characteristics of Corn Straw-Co-AMPS-Co-AA Superabsorbent Hydrogel

Cheng, Weimin; Hu, Xiangming; Wang, Biao; Li, Guohua

doi:10.3390/polym7111522

Cited by 55 publications

(33 citation statements)

References 30 publications

(24 reference statements)

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“…It is worthy to point out that the hydrogel can keep high swelling capacity in distilled water at pH < 10, which is caused by the buffer action of -COOH and -COO-groups and is very advantageous for the application of superabsorbent in agriculture. Similar conclusions could also be found in other works [34]. …”

Section: Effect Of Ph On Swelling Ratios Of Hydrogelssupporting

confidence: 92%

Valorization of Superabsorbent Polymers from Used Disposable Diapers as Soil Moisture Conditioner

Orozco¹,

Timoteo-Cruz²,

Torres-Blancas³

et al. 2017

Preprint

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This study was conducted to explore the potential of superabsorbent polymers (SAPs) from used disposable diapers as soil moisture conditioner. Swelling behavior of the proposed hydrogel in response to external stimuli such as salt solutions, temperature and pH was studied. In addition, laboratory experiments were carried out to evaluate the effects of incorporation hydrogel on germination of bean (Phaseolus vulgaris L.) and pumpkin (C. pepo) seeds. The structure of the superabsorbent was characterized by Fourier transform infrared spectroscopy (FTIR). The results indicate that the proposed SAP exhibited a maximum swelling capacity of 189 g⋅g -1 of dry gel. It was observed that the swelling capacity decreased with an increase in the ionic strength of the swelling medium. When this SAP was mixed with sandy soil, the mixture was able to lose water more slowly. The seeds germination and seedling growth was remarkably influenced by the application of 0.5, 1.0 and 2.0 w/w% of SAP compared to the untreated soil. Therefore, it follows that it is possible to take advantage of SAPs property from used disposable diapers to retain the moisture in soil as an alternative to value the use of such waste, showing that it has potential for diverse applications in agriculture.

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Section: Effect Of Ph On Swelling Ratios Of Hydrogelssupporting

confidence: 92%

Valorization of Superabsorbent Polymers from Used Disposable Diapers as Soil Moisture Conditioner

Orozco¹,

Timoteo-Cruz²,

Torres-Blancas³

et al. 2017

Preprint

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show abstract

“…These free radicals have increased the collision probability among them, thus leading to the termination of the chain reaction. The generated short graft chains could not have a tendency to form a 3D polymeric network easily, thus decreasing swelling index (Cheng et al, 2015). Thus, it has been observed that optimum KPS concentration in this study was 1.5 g.…”

Section: Effect Of Different Components Of Hydrogels On Swellingmentioning

confidence: 69%

Chitosan/Xanthan Gum Based Hydrogels as Potential Carrier for an Antiviral Drug: Fabrication, Characterization, and Safety Evaluation

et al. 2020

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This study investigated the use of pure polymer chitosan (CS), xanthan gum (XG), monomer 2-acrylamido-2-methylpropane sulfonic acid (AMPS) and initiator potassium persulfate (KPS) as drug carrier system crosslinked through N ′ N ′ -methylene bis-acrylamide (MBA) for controlled drug delivery of acyclovir (ACV). ACV is highly effective and selective antiviral drugs used for prophylaxis and treatment against herpes simplex viruses (HSV) infections. Present oral marketed formulations are associated with number of side effects and shortcomings which hampered its clinical effectiveness. Hydrogels (FCX1-FCX9) composed of CS, XG, AMPS, MBA, and KPS were prepared by free radical polymerization technique and characterized through FTIR, PXRD, thermal analysis and SEM. Swelling dynamics and drug release behavior was also investigated. FTIR studies confirmed that ACV was successfully encapsulated into hydrogel polymeric network. SEM revealed porous structure whereas thermal analysis showed enhanced thermal stability of polymeric network. PXRD indicated amorphous dispersion of ACV during preparation process. Swelling dynamics and ACV release behavior from developed hydrogels was dependent on pH of the medium and concentration of pure reactants used. Korsmeyer-Peppas model was best fit to regression coefficient. The present work demonstrated a potential for developing a pH sensitive hydrogel for an antiviral drug ACV by using pure polymers CS, XG, and monomer AMPS.

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“…Superabsorbent hydrogels are gaining special attention in recent years . Because of the three‐dimensional networks with macroporous structures, they are able to trap dye molecules from aqueous solutions . Chitosan is an N‐deacetylated derivative of chitin, which has no toxicity but good biodegradability.…”

Section: Introductionmentioning

confidence: 99%

Sorption behavior of methylene blue and rhodamine B mixed dyes onto chitosan graft poly (acrylic acid‐co‐2‐acrylamide‐2‐methyl propane sulfonic acid) hydrogel

Tang

Liu

et al. 2018

Adv Polym Technol

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Chitosan graft poly(acrylic acid-co-2-acrylamide-2-methyl propane sulfonic acid) (CTS-g-P(AA-co-AMPS)) hydrogel is prepared and used to remove methylene blue (MB) and rhodamine B (RB) mixed dyes from aqueous solutions. The effect of adsorption conditions, including the initial concentrations of dye solutions, contact time, initial pH values, ionic strength, and the adsorbent dosage, on the adsorption capacities is investigated. The maximal adsorption capacity for MB and RB is 936.0 and 556.9 mg/g, respectively. The adsorption isotherms of the mixed dyes are discussed using the extended Langmuir (EL) and the extended Freundlich (EF) isotherm equations. It indicates that the adsorption of both dyes is in good agreement with the extended Freundlich isotherm. Meanwhile, the adsorption processes of both dyes are spontaneous. Adsorption kinetics is in accordance with the pseudo-secondorder kinetic equation. It is concluded that the available adsorption sites are shared by both kinds of the dye molecules. The difference of the maximal adsorption capacities of the two dyes is due to their different affinity to the adsorbent. K E Y W O R D S adsorption, hydrogel, mixed dyes How to cite this article: Tang Y, He T, Liu Y, Zhou B, Yang R, Zhu L. Sorption behavior of methylene blue and rhodamine B mixed dyes onto chitosan graft poly (acrylic acid-co-2-acrylamide-2-methyl propane sulfonic acid) hydrogel. Adv

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Preparation and Characteristics of Corn Straw-Co-AMPS-Co-AA Superabsorbent Hydrogel

Cited by 55 publications

References 30 publications

Valorization of Superabsorbent Polymers from Used Disposable Diapers as Soil Moisture Conditioner

Valorization of Superabsorbent Polymers from Used Disposable Diapers as Soil Moisture Conditioner

Chitosan/Xanthan Gum Based Hydrogels as Potential Carrier for an Antiviral Drug: Fabrication, Characterization, and Safety Evaluation

Sorption behavior of methylene blue and rhodamine B mixed dyes onto chitosan graft poly (acrylic acid‐co‐2‐acrylamide‐2‐methyl propane sulfonic acid) hydrogel

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