A chitin nanofibril reinforced multifunctional monolith poly(vinyl alcohol) cryogel

Nata, Iryanti Fatyasari; Wu, Tsai-Mao; Chen, Jung-Kung; Lee, Cheng‐Kang

doi:10.1039/c4tb00175c

Cited by 24 publications

(7 citation statements)

References 30 publications

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“…Recently, the incorporation of silver nanoparticles (Ag NPs) ,, and gold nanoparticles (Au NPs) with excellent antimicrobial properties into polymer cryogels has received more and more interest in water-purifying fields. Loo et al , optimized the preparation of poly(sodium acrylate) (PSA) cryogels with more interconnected pores and a higher swelling rate and adsorption capacity by tailoring reaction conditions.…”

Section: Introductionmentioning

confidence: 99%

“…2−4 Cryogels based on organic and inorganic nanoparticles can be used as effective microdevices for the purification of field drinking water because of their high porosity, low density, and antimicrobial properties. 5,6 Recently, the incorporation of silver nanoparticles (Ag NPs) 1,7,8 and gold nanoparticles (Au NPs) 3 with excellent antimicrobial properties into polymer cryogels has received more and more interest in water-purifying fields. Loo et al 1,7 optimized the preparation of poly(sodium acrylate) (PSA) cryogels with more interconnected pores and a higher swelling rate and adsorption capacity by tailoring reaction conditions.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Ag NPs can render the cryogels with a strong antimicrobial performance, but the mechanical strength of the cryogels was not improved. Subsequently, Nata et al 8 have reported a multifunctional poly(vinyl alcohol) cryogel by incorporation of rigid chitin nanofibrils (CNFs) and Ag NPs. Compared to that of neat PVA cryogel, the storage modulus of as-produced cryogels is improved by adding CNF−Ag.…”

Section: ■ Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Superfast Adsorption–Disinfection Cryogels Decorated with Cellulose Nanocrystal/Zinc Oxide Nanorod Clusters for Water-Purifying Microdevices

Wang

Song

et al. 2017

ACS Sustainable Chem. Eng.

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In outdoor activities and disaster environments, a portable microdevice is very important for the rapid purification of field drinking water. Smart cryogels were fabricated by one-pot copolymerization among acrylamide (AM) monomers, 2-(dimethylamino) ethyl methacrylate (DMAEMA) monomers, and cellulose nanocrystal/zinc oxide (CNC/ZnO) nanorod clusters through a simple ice-template method. The effect of nanohybrid contents on microstructural, thermal, swelling, and antibacterial properties of cryogels-ZnO was investigated. With the incorporation of 1 wt % CNC/ZnO, the cryogels showed macroporous-networked structures with a high porosity of 93% and homogeneous nanorod clusters on the macroporous wall. Cryogels-ZnO showed high mechanical strength in both dry and wet states, an adsorption capacity of 30.8 g/g, superfast adsorption time (2.5 s), and a stable swelling−deswelling ability after 10 cycles. Additionally, the adsorption capacity of cryogels-ZnO presented a dual temperature/pH response. Upon treatment of the simulated field water with cryogels-ZnO for 45 min, the cfu amounts of simulated field water were decreased from 1862 to 6 cfu/mL. This cfu amount for treated water was much lower than the 100 cfu/mL of China's national drinking water standard. In addition, cryogels-ZnO can effectively handle 14.3−16.1 g/g of disinfected drinking water by manual compression. Such cryogels-ZnO exhibited a great potential for field drinking-water-purifying microdevices.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

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Superfast Adsorption–Disinfection Cryogels Decorated with Cellulose Nanocrystal/Zinc Oxide Nanorod Clusters for Water-Purifying Microdevices

Wang

Song

et al. 2017

ACS Sustainable Chem. Eng.

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“…The resultant ChNFs were usually 10–100 nm in diameter and several micrometers in length, exhibiting large aspect ratio and specific surface area. Owing to the nanoscale dimension, large aspect ratio and surface area and high elastic modulus, ChNFs acted as an ideal reinforcing agent in various polymer matrices, e.g., poly(methyl methacrylate), natural rubber, polysilsesquioxane–urethaneacrylate copolymers, acrylic resin, poly(ethylene oxide) and poly(vinyl alcohol). ,, Therefore, it is of great practical interest to utilize ChNFs as a potential reinforcing agent in CMC film. On the other hand, due to the presence of chemically active hydroxyl and acetyl amine groups on the surface, its surface characteristics can be tailored through acetylation and deacetylation.…”

Section: Introductionmentioning

confidence: 99%

Chitin Nanofibers as Reinforcing and Antimicrobial Agents in Carboxymethyl Cellulose Films: Influence of Partial Deacetylation

Song

et al. 2016

ACS Sustainable Chem. Eng.

129

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The development of edible, environmentally friendly, mechanically strong and antimicrobial biopolymer films for active food packaging has gained considerable interest in recent years. The present work deals with the extraction and deacetylation of chitin nanofibers (ChNFs) from crab shells and their utilization as reinforcing and antimicrobial agents in carboxymethyl cellulose (CMC) films. ChNFs were successfully isolated from the speckled swimming crab shells for the first time through the multistep procedures involving deproteinization, demineralization, depigmentation and mechanical disintegration. Afterward, the partially deacetylated ChNFs (dChNFs) were obtained through alkali treatment. It was found that the partial deacetylation led to the exposure of more amino groups on the surface of dChNFs and thus remarkably improved their dispersion state in an aqueous solution. The ChNF/CMC and dChNF/CMC films comprising up to 10 wt % nanofibers were prepared through the solution casting method, and their performance was evaluated and contrasted in terms of mechanical properties and antimicrobial activities. The results showed that the dChNF/CMC films exhibited superior mechanical and antimicrobial performance over ChNF/CMC films at any loadings, demonstrating the importance of ChNF surface chemistry in the development of high-performance ChNF/CMC films for antimicrobial food packaging application.

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“…Then by reducing the property of polydopamine, cryogel immersing in the silver nitrate solution conduct the incorporation of AgNPs into the structure of sponge‐like cryogel. [ 107 ] The antibacterial activity of cryogel successfully was practiced against E. coli . However, the high cost of Ag nanoparticles and the limited need for water for Ag release is the disadvantages of this method.…”

Section: Cryogelsmentioning

confidence: 99%

Antibacterial activity of natural polymer gels and potential applications without synthetic antibiotics

Hamidi

Monajjemzadeh

Siahi‐Shadbad

et al. 2022

Polymer Engineering & Sci

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Antibiotics' use has increased, resulting in disadvantages like patients' drug resistance. Consequently, urgent action is required to develop a new generation of antibacterial agents. Most antibacterial platforms still require a modification with further antibacterial agents (e.g., antibiotics) for adequate antibacterial efficiency. Thus, a nonantibiotic methodology is immediately needed. Furthermore, bactericidal agents used for this purpose are usually based on metal nanoparticles, carbon materials, and polymers. Still, chemicals, antibiotics, and biocides lead to environmental damage. Therefore, the help of biocompatible yet durable materials and polymers is highly appreciated. In addition, if a polymer is not biodegradable, it will remain in the environment for more than one hundred years due to its low degradation rate. Moreover, non‐biodegradable polymers are harmful to in vivo applications. Hence, the use of biodegradable and non‐toxic materials has received many considerations. Over the last few years, the design and synthesis of new polymer gels have gained increasing attention. A polymer gel, also known as a hydrogel, is a three‐dimensional and cross‐linked network filled with water or other liquid solvents. Besides, the hydrogels supercritical drying method results in aerogels, and the freeze‐drying method generates cryogels, where their porous and sponge‐like structures are preserved. Additionally, antibacterial polymer gels are a new generation of polymers considered attractive due to their unique properties. The most recent studies and the latest innovations in polymer gels and hybrid polymers with intrinsic antibacterial properties were discussed in the present review. The reviewed studies from 2015 to April 2022 showed a tremendous revival in research about biopolymer hydrogel, aerogel, and cryogel as antibacterial agents.

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A chitin nanofibril reinforced multifunctional monolith poly(vinyl alcohol) cryogel

Abstract: The antioxidant and antimicrobial functionalization of a chitin nanofibril (CNF) reinforced poly(vinyl alcohol) cryogel prepared by immersing in an alkaline dopamine solution followed by reducing AgNO3 into Ag nanoparticles on the macroporous structure of a spongy cryogel.

Cited by 24 publications

References 30 publications

Superfast Adsorption–Disinfection Cryogels Decorated with Cellulose Nanocrystal/Zinc Oxide Nanorod Clusters for Water-Purifying Microdevices

Superfast Adsorption–Disinfection Cryogels Decorated with Cellulose Nanocrystal/Zinc Oxide Nanorod Clusters for Water-Purifying Microdevices

Chitin Nanofibers as Reinforcing and Antimicrobial Agents in Carboxymethyl Cellulose Films: Influence of Partial Deacetylation

Antibacterial activity of natural polymer gels and potential applications without synthetic antibiotics

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