<i>In situ</i> synthesis and properties of Ag NPs/carboxymethyl cellulose/starch composite films for antibacterial application

Chen, Jing; Li, Huan; Fang, Changqing; Cheng, Youliang; Tan, Tingting; Han, Hanzhi

doi:10.1002/pc.25414

Cited by 19 publications

(9 citation statements)

References 51 publications

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“…[22,58,59] The interaction between the reinforcements and the matrix improved, however, the flexibility of BC decreased, due reduced the molecular movement while the tensile strength increased. [60] Finally, BC reinforced at 3% of functionalized GO grafts presented increased tensile strength, contrary to BC/GO 3%. Interestingly, the tensile strength values of BC/GO-F-M-S at 3% were four times higher (3.34 MPa) as compared to the CS matrix (0.77 MPa), and considerably reduced the elongation at break (19.22%).…”

Section: Mechanical Properties Of Bcmentioning

confidence: 94%

Biocomposites based on starch with multi‐functionalized graphene oxide: Effect of graft composition and concentration

et al. 2021

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The current global scenario has a great impact on the development of new biobased materials due to the vital advantages that are helpful in replacing synthetic and hazardous materials. In this study, biocomposites (BC) of cassava starch/grafts of multi-functionalized graphene oxide were synthesized by solvent casting. To improve their interface compatibility, graphene oxide (GO) was grafted with fructose, microcellulose and/or starch. The multifunctionalization of GO (grafts) was determined by Fourier transform infrared and Raman spectroscopy. The results confirm the covalent bond between GO and organic molecules, with a grafting average percentage of 45% by weight. Subsequently, the effects of the concentrations and composition of grafts on surface morphology (SEM) showed that the use of multi-functionalized GO with organic molecules improves the compatibility and graft-matrix interaction, preventing agglomeration, and it favors the formation of well-dispersed BC. The thermogravimetric analysis (TGA) revealed significant improvement in the thermal stability of BC with grafts at 3%. The mechanical properties of BC showed tensile strength values were four (4) times higher as compared with those of CS matrix. The elongation at break values was also directly related to the concentration and type of grafts. The functionalization of GO with organic molecules allows to obtain BC with good thermomechanical properties, reducing the load of GO, which increases their applications. This knowledge can be used to the development of homogeneous and high-quality BC through the modification of the GO structure as a fundamental step to improve graft-matrix interactions.

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Section: Mechanical Properties Of Bcmentioning

confidence: 94%

Biocomposites based on starch with multi‐functionalized graphene oxide: Effect of graft composition and concentration

et al. 2021

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“…Spherical Ag NPs, with a diameter of 16 nm, showed antibacterial properties against the human pathogens Escherichia coli and Pseudomonas aeruginosa [ 101 ]. Chen et al (2019) also developed an antimicrobial-based biocomposite containing Ag NPs with good antibacterial properties against E. coli and S. aureus , as shown by the disk diffusion method [ 102 ].…”

Section: Reviewmentioning

confidence: 99%

Antimicrobial metal-based nanoparticles: a review on their synthesis, types and antimicrobial action

Correa

Martínez

Vidal

et al. 2020

Beilstein J. Nanotechnol.

117

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The investigation of novel nanoparticles with antimicrobial activity has grown in recent years due to the increased incidence of nosocomial infections occurring during hospitalization and food poisoning derived from foodborne pathogens. Antimicrobial agents are necessary in various fields in which biological contamination occurs. For example, in food packaging they are used to control food contamination by microbes, in the medical field the microbial agents are important for reducing the risk of contamination in invasive and routine interventions, and in the textile industry, they can limit the growth of microorganisms due to sweat. The combination of nanotechnology with materials that have an intrinsic antimicrobial activity can result in the development of novel antimicrobial substances. Specifically, metal-based nanoparticles have attracted much interest due to their broad effectiveness against pathogenic microorganisms due to their high surface area and high reactivity. The aim of this review was to explore the state-of-the-art in metal-based nanoparticles, focusing on their synthesis methods, types, and their antimicrobial action. Different techniques used to synthesize metal-based nanoparticles were discussed, including chemical and physical methods and “green synthesis” methods that are free of chemical agents. Although the most studied nanoparticles with antimicrobial properties are metallic or metal-oxide nanoparticles, other types of nanoparticles, such as superparamagnetic iron-oxide nanoparticles and silica-releasing systems also exhibit antimicrobial properties. Finally, since the quantification and understanding of the antimicrobial action of metal-based nanoparticles are key topics, several methods for evaluating in vitro antimicrobial activity and the most common antimicrobial mechanisms (e.g., cell damage and changes in the expression of metabolic genes) were discussed in this review.

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“…The particle size and concentration of Ag NPs are the key factors affecting their antibacterial properties. Within a certain concentration range, the higher the concentration of Ag NPs, the better the antibacterial effect ( Chen et al, 2019 ). However, too high concentration will cause Ag NPs to agglomerate and reduce their antibacterial properties ( Zhang et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Curcumin@Ag Loaded Core/Shell Nanofiber Membrane and its Synergistic Antibacterial Properties

Wang

Liu

et al. 2022

Front. Chem.

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The core/shell structure nanofiber membrane loaded with curcumin and silver nanoparticles was prepared by coaxial electrospinning technology, which is a high-efficiency combined antibacterial material composed of photodynamic antibacterial agent and metal nanoparticle. As a photosensitizer, curcumin could generate singlet oxygen under laser irradiation. Silver nanoparticles have antibacterial properties, and could also enhance the singlet oxygen production of curcumin due to the metal-enhanced singlet oxygen effect, thereby producing a synergistic antibacterial effect. Compared with the antibacterial rate of uniaxial curcumin fiber membrane (45.65%) and uniaxial silver nanoparticle-loaded fiber membrane (66.96%), the antibacterial rate of curcumin@Ag core/shell structure fiber membrane against Staphylococcus aureus is as high as 93.04%. In addition, the antibacterial experiments show that the core/shell fiber membrane also has excellent antibacterial effects on Escherichia coli.

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In situ synthesis and properties of Ag NPs/carboxymethyl cellulose/starch composite films for antibacterial application

Cited by 19 publications

References 51 publications

Biocomposites based on starch with multi‐functionalized graphene oxide: Effect of graft composition and concentration

Biocomposites based on starch with multi‐functionalized graphene oxide: Effect of graft composition and concentration

Antimicrobial metal-based nanoparticles: a review on their synthesis, types and antimicrobial action

Fabrication of Curcumin@Ag Loaded Core/Shell Nanofiber Membrane and its Synergistic Antibacterial Properties

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