Modification of wheat gluten with citric acid to produce superabsorbent materials

Chiou, Bor‐Sen; Jafri, Haani; Cao, Trung; Robertson, George H.; Gregorski, Kay S.; Imam, Syed H.; Glenn, Greg; Orts, William J.

doi:10.1002/app.39044

Cited by 38 publications

(39 citation statements)

References 33 publications

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“…Moreover, almost 80% of the total amount of urea in the 0.1 wt % urea solution diffused into the hydrogel, and the diffusion process was consistent with a Fickian diffusion mechanism. In addition, our synthesized superabsorbent WNMS–PAA composite showed better properties of water swelling, WR, and urea absorption compared to the same type of superabsorbent materials . Thus, it could be exploited very well in many potential applications, including agriculture, forestry horticulture, pharmaceuticals, and other industries.…”

Section: Discussionmentioning

confidence: 90%

“…Recently, new synthesis technologies, such as microwave irradiation, ultrasound, γ irradiation, and UV irradiation, have been developed. Among those methods, UV irradiation can shorten the reaction time and improve the efficiency . The environmental impact of irradiation technology is also more manageable and applicable as a dry reaction or semidry reaction processes.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and properties of a superabsorbent from an ultraviolet‐irradiated waste nameko mushroom substrate and poly(acrylic acid)

Zhang

Cheng

Liu

et al. 2014

J of Applied Polymer Sci

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To better use the waste nameko mushroom substrate (WNMS) and prevent its pollution into the environment, a novel superabsorbent polymer was synthesized via the UV irradiation copolymerization of acrylic acid and WNMS in the presence of an initiator (dimethoxy-2-phenylacetophenone and ammonium persulfate) and crosslinker N,N 0 -methylenebisacrylamide. The factors that had an influence on the water absorbency of the superabsorbent polymer were investigated and optimized. Under the optimized conditions, WNMS-poly(acrylic acid) was obtained. Its swelling behaviors, which followed the pseudo-second-order swelling kinetic model, were investigated in distilled water (1701 g/g) and a 0.9 wt % NaCl solution (388 g/g). The water absorbency was 1011 g/g in a 0.1 wt % urea solution and 80% amount of urea diffused into the gels. The urea diffusion followed a Fickian diffusion mechanism. Moreover, the product showed excellent water retention capabilities under the condition of high temperature or high pressure. V C 2014Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40471.

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Section: Discussionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Synthesis and properties of a superabsorbent from an ultraviolet‐irradiated waste nameko mushroom substrate and poly(acrylic acid)

Zhang

Cheng

Liu

et al. 2014

J of Applied Polymer Sci

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“…[17] Glutenine is a polymeric protein with a molecular weight ranging from 500,000 to several million Da. [35,36] The characteristics of WG make it a potential candidate for the production of materials for different applications. Different materials have been prepared from WG, such as films, [21][22][23] membranes, [24,25] fibers, [26] microparticles, [27,28] plastic, [29,30] sensing material, [31] compounds materials, [32][33][34] and modified wheat gluten.…”

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confidence: 99%

Porous wheat gluten microparticles obtained by electrospray: Preparation and characterization

et al. 2017

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Currently, microporous polymer materials are being studied extensively due to their attractive properties which allow for a wide potential of applications, such as prolonged-release systems (PRS). The objective of the present work was to prepare and characterize porous microparticles of wheat gluten (WG) using the electrospray technique. The effect of the physicochemical parameters of the solution and electrospray technique parameters on the morphology and size of the materials obtained was studied. For all of the concentrations of WG, porous microparticles with sphere geometry were obtained. At higher concentrations of WG (8% w/v), higher values of viscosity (0.32405 ± 0.002 Pa·s), density (0.997 ± 0.0005 g/cm 3 ), and particle size (1.42 ± 0.71 μm) were obtained, while at lower concentration, high stability rheological is presented, which exhibited Newtonian fluid behavior. Characterization by scanning electron microscopy (SEM), Fourier transform-infrared spectroscopy (FT-IR), and X-ray diffraction indicated that the material obtained has a potential application in the PRS industry. K E Y W O R D SFourier transform-infrared spectroscopy, porous microparticles, rheology, wheat gluten, X-ray

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“…Meanwhile, the component of CP cellulose, of course, also plays another non‐negligible function, that is the strength of PAA/CP is greatly improved because of the addition of the very tough and hard CP cellulose. The applications of ultraviolet irradiation technique during the preparing process of CP/AA not only shorted time‐consuming and improved the efficiency, but also did not need some especial equipment relative to conventional synthetic methods …”

Section: Resultsmentioning

confidence: 99%

Fabrication and properties of a novel superabsorbent composite based on coco peat and poly (acrylic acid) cross-linked trimethylolpropane trimaleate under ultraviolet irradiation

Bai

et al. 2016

Polym. Adv. Technol.

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A series of novel poly(acrylic acid)/coco peat (PAA/CP) superabsorbent composites were prepared via the ultraviolet irradiation copolymerization of acrylic acid monomer (PAA) and coco peat cellulose (CP) in the presence of the cross-linker trimethylolpropane trimaleate. The physico-chemical structures of obtained PAA/CP were characterized by Fourier transform infrared spectroscopy, thermogravimetry/derivative thermogravimetry, X-ray diffraction, and scanning electron microscopy, respectively. The critical parameters of affecting the water absorbency of PAA/CP, including the cross-linker level, amount of CP and reaction time, were studied in detailed. The experimental results showed that the PAA/CP samples exhibited the maximum swelling value of 523.09 g/g in distilled water and 40.52 g/ g in 0.9 wt % NaCl solution. The swelling behaviors of PAA/CP were significantly relied on the concentration of salt solution and the pH of external solution. The effect of ions species on the swelling performance was in the order: Na + > Ca 2+ > Fe 3+ , and in pH 2.2 and 7.2 aqueous solutions PAA/CP composites displayed better pH-responsiveness and reversible on-off switching characteristics. Urea, as an agrochemical model, was loaded into PAA/CP substrate to supply with nitrogen nutrient. The test of their loading and releasing diffusion performance of urea suggested that the urea loading percentage of PAA/CP was remarkably dependent on the concentration of aqueous urea solutions and the release of urea from loaded PAA/CP samples in water followed a non-Fickian mechanism. Owing to their considerable good water absorption capacity, slow urea release, economical and environment-friendly merits, PAA/CP composites could be exploited for the agriculture applications.

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Modification of wheat gluten with citric acid to produce superabsorbent materials

Cited by 38 publications

References 33 publications

Synthesis and properties of a superabsorbent from an ultraviolet‐irradiated waste nameko mushroom substrate and poly(acrylic acid)

Synthesis and properties of a superabsorbent from an ultraviolet‐irradiated waste nameko mushroom substrate and poly(acrylic acid)

Porous wheat gluten microparticles obtained by electrospray: Preparation and characterization

Fabrication and properties of a novel superabsorbent composite based on coco peat and poly (acrylic acid) cross-linked trimethylolpropane trimaleate under ultraviolet irradiation

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