Double-network cross-linked aerogel with rigid and super-elastic conversion: simple formation, unique properties, and strong sorption of organic contaminants

Liu, Longfei; Li, Yanli; Tan, Miaomiao; Che, Naiju; Li, Chengliang

doi:10.1007/s11356-021-13305-x

Cited by 8 publications

(2 citation statements)

References 57 publications

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“…Since the pads were prepared via repeated freezing–thawing, a 3D porous structure was created by the sublimation of ice crystals filled in polymer networks during the freezing process. In A‐0, paper fibres were interpenetrated in PVA chains and connected by hydrogen bonds to form a stable 3D network 28 . When 3% AgNPs were added, the well‐dispersed nanoparticles might fill the pores in the polymer network and decrease the size of ice crystals.…”

Section: Resultsmentioning

confidence: 99%

“…In A-0, paper fibres were interpenetrated in PVA chains and connected by hydrogen bonds to form a stable 3D network. 28 When 3% AgNPs were added, the well-dispersed nanoparticles might fill the pores in the polymer network and decrease the size of ice crystals. However, when more AgNPs were added, the agglomeration of nanoparticles in the matrix might lead to the interruption of the polymer networks, resulting in increased internal pore size.…”

Section: Characterization Of the Padmentioning

confidence: 99%

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Fabrication of antimicrobial colorimetric pad for meat packaging based on polyvinyl alcohol aerogel with the incorporation of anthocyanins and silver nanoparticles

Chen

et al. 2023

Packag Technol Sci

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A novel colorimetric pad with porous structure, good antimicrobial activity, and pHsensitivity has been developed based on polyvinyl alcohol (PVA), paper fibre, silver nanoparticles (AgNPs) and purple sweet potato anthocyanins (PSPA), aiming for the preservation and freshness indication of fresh meat. The effects of AgNPs content on the structure, physical properties and colour-changing behaviour in response to pH of the pad were investigated. The results showed that AgNPs physically interacted with polymer matrix and improved the uniformity of the internal pore structure of the pad. The antibacterial capability, DPPH radical scavenging activity and surface hydrophobicity of the pad increased significantly with increasing AgNPs content.However, the pH sensitivity of the pad was maintained with the addition of AgNPs, and the colour change of pad A-9 with pH was the most distinguishable when AgNPs content was the highest. When pad A-6 was used in the packaging of minced pork, compared to pad A-0 without the addition of AgNPs, it showed more significant effects in inhibiting microbial growth, reducing the production of volatile nitrogen compounds, improving the sensory quality of meat (p < 0.05), thereby extending the shelf life from 72 h to 120 h at 4 C. Moreover, A-6 displayed a visible colour change in response to the spoilage of minced pork in real time. Therefore, the developed pad with dual functions had great potential to be applied as a novel active and intelligent packaging for fresh meat, which would contribute towards reducing food waste and ensuring food safety.

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Section: Resultsmentioning

confidence: 99%

Section: Characterization Of the Padmentioning

confidence: 99%

Fabrication of antimicrobial colorimetric pad for meat packaging based on polyvinyl alcohol aerogel with the incorporation of anthocyanins and silver nanoparticles

Chen

et al. 2023

Packag Technol Sci

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Fulvic Acid Fertilizer Improves Garlic Yield and Soil Nutrient Status

Sun

Zhang

et al. 2022

Gesunde Pflanzen

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Three dimensional BC/rGA aerogel: preparation, characterization, and adsorption of Cr(VI)

Che

Liu

et al. 2022

Biochar

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Graphene-based composite aerogel doped with other low-cost materials can reduce the cost and promote the use in water treatment. This work prepared ball-milled biochar/reduced graphene oxide aerogel (BC/rGA) using GO and low-cost ball-milled biochar (BC) in a certain proportion with the freeze-thawing technique and sol–gel method, and applied BC/rGA on the Cr(VI) removal from aquatic environments. The characterization results showed that aerogel had a honeycomb briquette three-dimension (3D) and mesoporous structure with interconnected pores, and proved the preparation progress of aerogel in principle. Compared with GO, rGA and BC/rGA had better adsorption performance with 3D structure and well-developed pores, and BC/rGA with the mixture ratio of BC and GO of 1:4 was more appropriate. The adsorption kinetics data of rGA and BC/rGA(1:4) were fitting well with the pseudo-second-order model (R2 > 0.951), and the isotherm adsorption results were fitting the Langmuir model well (R2 > 0.974). The results demonstrated that the adsorption process was monolayer and endothermic adsorption involving chemisorption. Additionally, the adsorption capacities of rGA and BC/rGA(1:4) at solution pH 2 were 3.71 and 3.89 times greater than those at solution pH 8, respectively. High background ion strength and low temperature slightly inhibited the adsorption of Cr(VI) by both rGA and BC/rGA(1:4). The adsorption mechanisms of Cr(VI) on rGA and BC/rGA(1:4) were electrostatic interaction, reduction and ion exchange. The use of BC/rGA could reduce the cost and promote the green reuse of agricultural waste. Overall, BC/rGA could be used as a promising green adsorbent alternative for the feasible treatment of heavy metal contaminated water. Graphical Abstract

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Double-network cross-linked aerogel with rigid and super-elastic conversion: simple formation, unique properties, and strong sorption of organic contaminants

Cited by 8 publications

References 57 publications

Fabrication of antimicrobial colorimetric pad for meat packaging based on polyvinyl alcohol aerogel with the incorporation of anthocyanins and silver nanoparticles

Fabrication of antimicrobial colorimetric pad for meat packaging based on polyvinyl alcohol aerogel with the incorporation of anthocyanins and silver nanoparticles

Fulvic Acid Fertilizer Improves Garlic Yield and Soil Nutrient Status

Three dimensional BC/rGA aerogel: preparation, characterization, and adsorption of Cr(VI)

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