Construction of novel cellulose/chitosan composite hydrogels and films and their applications

He, Meng; Chen, Hao; Zhang, Xinjiang; Wang, Chengshuang; Cheng, Xu; Xue, Yuting; Wang, Jinshan; Zhou, Panghu; Zhao, Qingxin

doi:10.1007/s10570-018-1683-9

Cited by 56 publications

(18 citation statements)

References 47 publications

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“…This indicates that the antibacterial performance of the C 1 A 1.5 N 9.5 A 0.5 is better than that of the C 0 A 1.5 N 9.5 A 0.5 [ 40 ]. The antibacterial properties of the C 1 A 1.5 N 9.5 A 0.5 hydrogel are better than the cellulose/chitosan composite hydrogel [ 41 ]. The column graphs ( Figure 5 g,h) show the diameter of the inhibition zone of E. coli and Staphylococcus aureus , respectively.…”

Section: Resultsmentioning

confidence: 99%

Smart Hydrogel Bilayers Prepared by Irradiation

Huo

An²,

Chang

et al. 2021

Polymers

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Environment-responsive hydrogel actuators have attracted tremendous attention due to their intriguing properties. Gamma radiation has been considered as a green cross-linking process for hydrogel synthesis, as toxic cross-linking agents and initiators were not required. In this work, chitosan/agar/P(N-isopropyl acrylamide-co-acrylamide) (CS/agar/P(NIPAM-co-AM)) and CS/agar/Montmorillonite (MMT)/PNIPAM temperature-sensitive hydrogel bilayers were synthesized via gamma radiation at room temperature. The mechanical properties and temperature sensitivity of hydrogels under different agar content and irradiation doses were explored. The enhancement of the mechanical properties of the composite hydrogel can be attributed to the presence of agar and MMT. Due to the different temperature sensitivities provided by the two layers of hydrogel, they can move autonomously and act as a flexible gripper as the temperature changes. Thanks to the antibacterial properties of the hydrogel, their storage time and service life may be improved. The as prepared hydrogel bilayers have potential applications in control devices, soft robots, artificial muscles and other fields.

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Section: Resultsmentioning

confidence: 99%

Smart Hydrogel Bilayers Prepared by Irradiation

Huo

An²,

Chang

et al. 2021

Polymers

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“…The diffraction peaks of PC at 2θ = 14°, 16°, 23° and 34.5° were correspond to the (1-10), ( 110), ( 200) and (004) planes of typical cellulose I crystal (French A D, 2014). The peaks of RCF at 2θ = 12°, 20° and 22° were attributed to the (1-10), ( 110) and (020) crystal planes of typical cellulose II (He M et al, 2018), which showed a typical conversion from cellulose I to cellulose II as a result of dissolution and regeneration of cellulose (Cai J and L Zhang, 2005). Compared with RCF, the peak intensity increased for CCF and ECFs, indicative of increased crystallinity degrees.…”

Section: Xrd Analysismentioning

confidence: 97%

Characterization and antibacterial property of epsilon-poly-L-lysine grafted cellulose films

Zhang

et al. 2021

Preprint

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In order to obtain a stable, biodegradable and cost-effective antibacterial food package materials, this study developed a facile route to immobilize epsilon-poly-L-lysine (EPL) on films. Cellulose films were prepared via a sol-gel transition method and activated by epoxy chloropropane (ECH) to form epoxide group. EPL was covalently immobilized on the surface of the cellulose films (ECFs) by reacting the amino groups of the EPL molecules with the epoxy groups of the epoxidized cellulose films. The structure, morphology and properties of films were characterized by scanning electron microscope, Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, universal material testing machine, ultraviolet-visible spectrophotometer and static water contact angle. The results showed that EPL was immobilized successfully in the cellulose films. ECFs exhibited 80% transmittance through 300 nm to 1100 nm and the excellent thermal degradation temperature of 240°C. Moreover, good antimicrobial activity against Gram-negative Escherichia coli, Gram-positive Staphylococcus aureus and Alicyclobacillus acidoterrestris were confirmed within 12 h, which is expected to provide a novel material for potential applications in the food industry.

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“…Ahmad et al (2016) used chitosan to enhance the affinity of cellulose fibers for Ag ions to produce functional cellulose filter papers. Due to their similar structures, chitosan and cellulose form hydrogen bonds (He et al 2018). Thus, chitosan provides strong bonding and increased mechanical properties of paper materials (Kucharska et al 2020).…”

Section: Polysaccharidesmentioning

confidence: 99%

Cellulose, nanocellulose, and antimicrobial materials for the manufacture of disposable face masks: A review

Garcia

Stevanović

Berthier

et al. 2021

BioRes

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Cellulose is among the most promising renewable and biodegradable materials that can help meet the challenge of replacing synthetic fibers currently used in disposable N95 respirators and medical face masks. Cellulose also offers key functionalities that can be valued in filtration applications using approaches such as nanofiltration, membrane technologies, and composite structures, either through the use of nanocellulose or the design of functional composite filters. This paper presents a review of the structures and compositions of N95 respirators and medical face masks, their properties, and regulatory standards. It also reviews the use of cellulose and nanocellulose materials for mask manufacturing, along with other (nano)materials and composites that can add antimicrobial functionality to the material. A discussion of the most recent technologies providing antimicrobial properties to protective masks (by the introduction of natural bioactive compounds, metal-containing materials, metal-organic frameworks, inorganic salts, synthetic polymers, and carbon-based 2D nanomaterials) is presented. This review demonstrates that cellulose can be a solution for producing biodegradable masks from local resources in response to the high demand due to the COVID-19 pandemic and for producing antimicrobial filters to provide greater protection to the wearer and the environment, reducing cross-contamination risks during use and handling, and environmental concerns regarding disposal after use.

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Construction of novel cellulose/chitosan composite hydrogels and films and their applications

Cited by 56 publications

References 47 publications

Smart Hydrogel Bilayers Prepared by Irradiation

Smart Hydrogel Bilayers Prepared by Irradiation

Characterization and antibacterial property of epsilon-poly-L-lysine grafted cellulose films

Cellulose, nanocellulose, and antimicrobial materials for the manufacture of disposable face masks: A review

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