Functionalization of spray coated cellulose nanofiber sheet with montmorillonite (MMT) and silver nanoparticles (AgNPs) to biomedical nanocomposite as wound regeneration scaffold

Veeramani, Subha; Ranu, Ashok; Shankar, Anitha; Shanmugam, Kirubanandan; Ellappan, Satheeshkumar; Suresh, Subramaniyam; Ilangovan, R.

doi:10.1016/j.porgcoat.2022.106782

Cited by 19 publications

(9 citation statements)

References 30 publications

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“…Such polymer composites with antibacterial properties can be used in medical applications; for instance, in work [ 32 ], a cellulose nanofiber with AgNPs with antimicrobial activity for developing scaffolds for wound repair was successfully made and analyzed. Our antibacterial results are also in good agreement with other works [ 9 , 13 , 33 , 34 ].…”

Section: Resultssupporting

confidence: 93%

Preparation, Structure, and Properties of PVA–AgNPs Nanocomposites

et al. 2023

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The aim of the work was to prepare a polymer matrix composite doped by silver nanoparticles and analyze the influence of silver nanoparticles (AgNPs) on polymers’ optical and toxic properties. Two different colloids of AgNPs were prepared by chemical reduction. The first colloid, a blue one, contains stable triangular nanoparticles (the mean size of the nanoparticles was ~75 nm). UV–vis spectrophotometry showed that the second colloid, a yellow colloid, was very unstable. Originally formed spherical particles (~11 nm in diameter) after 25 days changed into a mix of differently shaped nanoparticles (irregular, triangular, rod-like, spherical, decahedrons, etc.), and the dichroic effect was observed. Pre-prepared AgNPs were added into the PVA (poly(vinyl alcohol)) polymer matrix and PVA–AgNPs composites (poly(vinyl alcohol) doped by Ag nanoparticles) were prepared. PVA–AgNPs thin layers (by a spin-coating technique) and fibers (by electrospinning and dip-coating techniques) were prepared. TEM and SEM techniques were used to analyze the prepared composites. It was found that the addition of AgNPs caused a change in the optical and antibiofilm properties of the non-toxic and colorless polymer. The PVA–AgNPs composites not only showed a change in color but a dichroic effect was also observed on the thin layer, and a good antibiofilm effect was also observed.

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Section: Resultssupporting

confidence: 93%

Preparation, Structure, and Properties of PVA–AgNPs Nanocomposites

et al. 2023

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“…In particular, among the types of nanoclay, ecofriendly inorganic materials, such as montmorillonite (MMT), are suitable for biodegradable polymer-based nanocomposites in consideration of easy surface property modification and dispersion stability. MMT is a type of naturally occurring nanoclay mineral with a layered structure, which facilitates the formation of various hybrid composites with organic materials by appropriate physical and chemical methods. , Since these MMT nanolayers have a high aspect ratio and large surface area, dispersing the MMT nanolayers in a polymer matrix improves the mechanical properties, thermal stability, barrier properties, and flame retardancy of the parent polymer. In addition to improved mechanical robustness, the MMT also provides additional functionalities that improve the filtration performance of the polymer–MMT hybrid nanocomposites in comparison to bare polymeric nanofiber membranes.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Filter Membranes Based on Self-Assembled Core–Shell Biodegradable Nanofibers for Persistent Electrostatic Filtration through the Triboelectric Effect

et al. 2022

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The massive production of polymer-based respiratory masks during the COVID-19 pandemic has rekindled the issue of environmental pollution from nonrecyclable plastic waste. To mitigate this problem, conventional filters should be redesigned with improved filtration performance over the entire operational life while also being naturally degradable at the end. Herein, we developed a functional and biodegradable polymeric filter membrane consisting of a polybutylene adipate terephthalate (PBAT) matrix blended with cetyltrimethylammonium bromide (CTAB) and montmorillonite (MMT) clay, whose surface properties have been modified through cation exchange reactions for good miscibility with PBAT in an organic solvent. Particularly, the spontaneous evolution of a partial core–shell structure (i.e., PBAT core encased by CTAB-MMT shell) during the electrospinning process amplified the triboelectric effect as well as the antibacterial/antiviral activity that was not observed in naive PBAT. Unlike the conventional face mask filter that relies on the electrostatic adsorption mechanism, which deteriorates over time and/or due to external environmental factors, the PBAT@CTAB-MMT nanofiber membrane (NFM)-based filter continuously retains electrostatic charges on the surface due to the triboelectric effect of CTAB-MMT. As a result, the PBAT@CTAB-MMT NFM-based filter showed high filtration efficiencies (98.3%, PM0.3) even at a low differential pressure of 40 Pa or less over its lifetime. Altogether, we not only propose an effective and practical solution to improve the performance of filter membranes while minimizing their environmental footprint but also provide valuable insight into the synergetic functionalities of organic–inorganic hybrid materials for applications beyond filter membranes.

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“…Accordingly, NC films based on these ingredients have various biomedical potentials. Regarding the previous studies [ 27 , 28 , 29 , 30 , 31 , 32 ], as shown in Table 3 , it was reported that A. Ullah studied the modification of CA for wound healing utilization. The results showed that the incorporation of manuka honey into CA nanofiber led to the formation of nano-composites that were able to inhibit the colonization of bacterial cells over the surface of wounds.…”

Section: Resultsmentioning

confidence: 99%

Titanium Dioxide/Chromium Oxide/Graphene Oxide Doped into Cellulose Acetate for Medical Applications

et al. 2023

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Wound dressings have been designed based on cellulose acetate encapsulated with different concentrations of chromium oxide (Cr2O3) and titanium oxide (TiO2) with/without graphene oxide (GO). This study comprises the structural, morphological, optical, thermal, and biological behavior of chromium oxide/titanium dioxide/graphene oxide-integrated cellulose acetate (CA) films. The CA-based film bond formation was introduced by functional group analysis via Fourier transform infrared (FTIR) spectroscopy. The fabricated Cr2O3/TiO2/GO@CA film SEM micrographs demonstrate transition metal oxides Cr2O3 and TiO2 on a nano-scale. The TiO2@CA shows the lowest contact angle with 30°. Optically, the refractive index increases from 1.76 for CA to 2.14 for the TiO2@CA film. Moreover, normal lung cells (A138) growth examination in a function of Cr2O3/TiO2/GO@CA film concentration is conducted, introducing 93.46% with the usage of 4.9 µg/mL. The resulting data showed a promising wound-healing behavior of the CA-based films.

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Functionalization of spray coated cellulose nanofiber sheet with montmorillonite (MMT) and silver nanoparticles (AgNPs) to biomedical nanocomposite as wound regeneration scaffold

Cited by 19 publications

References 30 publications

Preparation, Structure, and Properties of PVA–AgNPs Nanocomposites

Preparation, Structure, and Properties of PVA–AgNPs Nanocomposites

Multifunctional Filter Membranes Based on Self-Assembled Core–Shell Biodegradable Nanofibers for Persistent Electrostatic Filtration through the Triboelectric Effect

Titanium Dioxide/Chromium Oxide/Graphene Oxide Doped into Cellulose Acetate for Medical Applications

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