Synergetic effects of additives on structural properties of acrylamide-based hydrogel

Jafarigol, Elham; Salehi, Mahsa Baghban; Mortaheb, Hamid Reza

doi:10.1080/01932691.2020.1721012

Cited by 16 publications

(6 citation statements)

References 37 publications

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“…In Fig. 3 b,c, we could clearly see that there are a large number of dense, regular and uniform holes in AM/CMC structure which could be attributed to –OH and –COOH hydrophilic functional groups 53 . On the contrary, in Fig.…”

Section: Resultsmentioning

confidence: 89%

A novel biochar-based composite hydrogel for removing heavy metals in water and alleviating cadmium stress in tobacco seedlings

Du,

Liu,

Pan

et al. 2023

Sci Rep

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A novel composite hydrogel (AM/CMC/B) synthesized from peanut shell biochar effectively adsorbs heavy metal Cd in water and reduces its toxicity to tobacco seedlings. The hydrogel, prepared via hydrothermal polymerization using acrylamide (AM), carboxymethyl cellulose (CMC), and peanut shell biochar (B), exhibited a maximum adsorption capacity of 164.83 mg g−1 for Cd2+ and followed a pseudo-second-order kinetic model. In pot experiments, the application of exogenous AM/CMC/B mitigated the inhibitory effects of Cd-contaminated soil on tobacco seedling growth. Addition of 10 mg kg−1 Cd resulted in improved phenotype, root system development, enhanced photosynthetic capacity, stomatal conductance (Gs), stomatal number, and increased antioxidant activity while reducing MDA content and leaf cell death. These findings highlight the potential of AM/CMC/B as an environmentally friendly adsorbent for Cd removal from water and for reducing Cd stress toxicity in tobacco and other plants.

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Section: Resultsmentioning

confidence: 89%

A novel biochar-based composite hydrogel for removing heavy metals in water and alleviating cadmium stress in tobacco seedlings

Du,

Liu,

Pan

et al. 2023

Sci Rep

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show abstract

“…3(b) and Fig. 3(c), we could clearly see that there were a large number of uniform and smooth holes in the structure of AM/CMC which could be attributed to -OH and -COOH hydrophilic functional groups 45 . On the contrary, in Fig.…”

Section: Sem Analysis Of Hydrogelsmentioning

confidence: 84%

Preparation of peanut shell biochar-based composite hydrogel and its effects on the growth and development of tobacco seedlings under Cd stress

Wang

Liu

et al. 2023

Preprint

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A novel peanut shell biochar-based composite hydrogel (AM/CMC/B) was synthesized and utilized to alleviate the toxicity of tobacco seedlings under Cd stress. The composition and structure of AM/CMC/B analyzed by Fourier transform-infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The performance of AM/CMC/B in the removal of Cd2+ was evaluated through a comparative experiment between AM/CMC/B and AM/CMC. A pot experiment was conducted to explore the effects of composite hydrogel AM/CMC/B on the growth and development of tobacco seedlings under Cd stress. The results showed that when the initial concentration of Cd2+ was 200 mg L-1, the temperature was 25 ℃ and pH was 5.0, the maximum adsorption capacity of Cd2+ by composite hydrogel AM/CMC/B could reach 164.83 mg g-1. Application of exogenous AM/CMC/B enhanced the growth of tobacco seedings under Cd stress. When 10 mg kg-1 Cd was added, AM/CMC/B supply obviously improved the phenotype of tobacco seedlings and made the roots of tobacco seedlings more developed, compared to the treatment blank control. The fresh and dry weight of the aboveground and underground parts of tobacco seedlings increased by 98.39%, 130.67% and 84.22%, 231.82%, respectively. The photosynthesis and chlorophyll content (SPAD value) of tobacco seedlings increased significantly, stomatal conductance (Gs) and stomatal number increased. In addition, AM/CMC/B increased the antioxidant activity of tobacco seedlings, significantly reduced MDA content and leaf cell mortality. Composite hydrogel AM/CMC/B had the most significant effect on alleviating Cd stress of tobacco seedlings. This study has a potential application prospect. It can provide guidance for sewage purification, and this study also has a high feasibility in alleviating the toxicity of Cd stress in tobacco and other plants.

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“…These results are in agreement with the printing parameters listed in Table 1. Shear‐thinning behavior facilitates the bioinks flow and as well as allows highly viscous bioinks to be effectively extruded out from the printing nozzle 45 . To characterize the shear‐thinning behavior of the samples, the viscosity curves were fitted by the following power law equation and the degree of shear‐thinning was estimated by calculating the parameters n and K .

η goodbreak= K \cdot γ^{n - 1} .

η is viscosity (Pa s), γ is shear rate (1 s −1 ), K is the consistency index (Pa s n ) corresponded to the hydrogel viscosity, n is the power law index (dimensionless) indicating the shear‐thinning property ( n < 1), Newtonian behavior ( n = 1), and shear‐thickening property ( n > 1).…”

Section: Resultsmentioning

confidence: 99%

“…Shear-thinning behavior facilitates the bioinks flow and as well as allows highly viscous bioinks to be effectively extruded out from the printing nozzle. 45 To characterize the shear-thinning behavior of the samples, the viscosity curves were fitted by the following power law equation and the degree of shear-thinning was estimated by calculating the parameters n and K.…”

Section: Rheological Studymentioning

confidence: 99%

Development of novel alginate‐polyethyleneimine cell‐laden bioink designed for 3D bioprinting of cutaneous wound healing scaffolds

Khoshnood

Zamanian

2022

J of Applied Polymer Sci

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In this work, the novel bioink composed of alginate and polyethyleneimine were prepared with different concentrations of alginate and polyethyleneimine (PEI) and used to measure printability, rheological behavior, and cellular functions. The results indicated that viscosity tends to increase about 1.3 times with increasing the alginate and PEI content, which gradually affected structural fidelity. The presence of PEI can create a bioink that is partially gelled with higher storage modulus, high shape fidelity, and printability than alginate. Increasing in the mechanical strength and decreasing in the swelling rate for alginate/PEI bioink demonstrated the strong effect of PEI on the enhancing of structure rigidity in the alginate‐based bioinks. Finally, the cell viability and cell proliferation of the 3D alginate/PEI scaffolds were examined using live/dead and 40,6‐diamidino‐2‐phenylindole staining to select the best bioink formulation. Fibroblast‐laden bioink of 6% alginate and 7% PEI indicated the high proliferation of the printed cells via increasing in hydrophilicity of the surface. The in‐vivo evaluations on the wound rat model indicated that the 3D scaffold effectively accelerated the wound healing process and promoted tissue regeneration by activation of vimentin along with cytokeratin as well as collagen synthesis. Hair follicles started to form at Day 7 in alginate/PEI scaffold.

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Synergetic effects of additives on structural properties of acrylamide-based hydrogel

Cited by 16 publications

References 37 publications

A novel biochar-based composite hydrogel for removing heavy metals in water and alleviating cadmium stress in tobacco seedlings

A novel biochar-based composite hydrogel for removing heavy metals in water and alleviating cadmium stress in tobacco seedlings

Preparation of peanut shell biochar-based composite hydrogel and its effects on the growth and development of tobacco seedlings under Cd stress

Development of novel alginate‐polyethyleneimine cell‐laden bioink designed for 3D bioprinting of cutaneous wound healing scaffolds

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