Preparation and characterization of contact active antibacterial surface based on chemically modified nanofibrillated cellulose by phenanthridinium silane salt

Hassanpour, Anita; Asghari, Sakineh; Lakouraj, Moslem Mansour; Mohseni, Mojtaba

doi:10.1016/j.ijbiomac.2018.03.141

Cited by 19 publications

(6 citation statements)

References 52 publications

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“…The obtained silane layer on the cellulose paper in our experiment is different from previous reports, in which functionalized cellulose fibers or paper sheets were obtained by CVD or CLD of trimethoxysilanes and trichlorosilanes. ,,,,− In those reports, huge differences were observed on the SEM images and IR spectra of the cellulose before and after modification, indicating the existence of a thick polysilane layer on cellulose fibers. For example, Tingaut et al coated cellulose fibers with TMVS by immersing cellulose fibers in hydrolyzed TMVS solution for 2 h and then treating the cellulose under 120 °C for 2 h. The obtained cellulose showed a significant difference on the FTIR spectrum compare to that of unmodified cellulose; Guo et al modified cellulose nanocrystals with TCVS by immersing the cellulose in water/toluene mixture for 48 h, and they obtained a thick polysilane layer with micro–nano structures on the cellulose nanocrystals .…”

Section: Resultscontrasting

confidence: 97%

Fast Strategy to Functional Paper Surfaces

Wang

Gao

et al. 2019

ACS Appl. Mater. Interfaces

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Paper, with advantages of low-cost, easy fabrication and disposal, flexibility and renewability, is a suitable substrate material for various applications. Functionalization and patterning on paper substrates are commonly required in many applications. Although many methods have been developed to achieve this, they typically suffer from some drawbacks such as time-consuming process, specific device dependence, lack of flexibility, low patterning resolution, and so forth. Herein, we present a general and fast method to functionalize paper sheets and create patterns. The whole modification process can be completed in 10 min and can be applied on various types of paper substrates and other natural materials such as natural fabrics. By our method, many commonly used functional groups can be covalently attached and patterned on paper substrates, while the characteristic features of the original paper substrates, for example, color, transparency, and conductivity, can be perfectly retained after modification to allow these properties to be incorporated into the resultant materials. High-resolution patterns can be created on paper by applying a photomask during the modification or controlling the time of modification to precisely control the functionality at any area on the obtained paper substrates. We also show the potential applications of our method in the fabrication of superhydrophobic coatings and biomaterials.

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Section: Resultscontrasting

confidence: 97%

Fast Strategy to Functional Paper Surfaces

Wang

Gao

et al. 2019

ACS Appl. Mater. Interfaces

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“…Finally, the materials were exchanged with different anions and had high catalytic activity for carbon dioxide cycloaddition reactions under solvent-free conditions . In summary, a range of cellulose-PIL derivatives can be prepared by various modification methods and applied to fields including pharmaceuticals, − papermaking, environmental protection, water treatment, − chemosensing, textile dyeing industry, , gene transfection, drug delivery, and antibacterial − and biomedical applications . One of the most important applications of cellulose-PILs is their use as heterogeneous catalysts for carbon dioxide transformation into cyclic carbonates through cycloaddition reactions with epoxides. ,,− …”

Section: Introductionmentioning

confidence: 99%

Fabrication of Carboxylic Acid and Imidazolium Ionic Liquid Functionalized Porous Cellulosic Materials for the Efficient Conversion of Carbon Dioxide into Cyclic Carbonates

Yang

Guo

Gao

et al. 2023

ACS Sustainable Chem. Eng.

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Cellulosic poly(ionic liquid)s ([Cellmim][Br]) with a degree of substitution (DS) in the range of 0.32–0.89 were synthesized successfully via the homogeneous transesterification reaction of cellulose with 1-(2-methoxyacetyl)-3-methyl imidazole bromide IL ([Mmim][Br]) in a DBU/DMSO/CO2 solvent system. The structure and properties of these novel materials have been fully characterized. Cellulosic poly(ionic liquid) POF polymers (POF-[Cellmim][Br]) were then obtained by an in situ crosslinking reaction without adding an exterior catalyst. The porosity and properties of the POF-[Cellmim][Br] materials can be modulated. The POF-[Cellmim][Br] materials functioned as green, efficient, and highly active catalysts for cycloaddition reactions of epoxides and carbon dioxide under solvent-free and co-catalyst-free conditions. These reactions gave high yields (up to 97%), and the catalyst can be easily separated with excellent reusability and no significant change to its structure. A plausible reaction mechanism for the cycloaddition reaction of epoxide and carbon dioxide by the POF-[Cellmim][Br] catalyst is proposed based on the experimental results. This work provided a new strategy to prepare cellulosic-PIL POF materials and offered a platform to understand the cooperative effects of porous properties and nucleophilic anions on the cycloaddition reaction of carbon dioxide and epoxides.

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“…GC polysaccharides anti-bacterial activity vs S. aureus and E. coli were examined using the process of agar diffusion previously mentioned by ( Hassanpour et al, 2018 , Wang et al, 2019 ).…”

Section: Methodsmentioning

confidence: 99%

Anti-bacterial, anti-scavenging and cytotoxic activity of garden cress polysaccharides

Alkahtani

Elshikh

Almaary

et al. 2020

Saudi Journal of Biological Sciences

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Plants polysaccharides are an infinite stock of drug composites with varying pharmacological and biological activities. The present investigation aimed to examine the antibacterial, anti-scavenging and cytotoxic potential of garden cress (GC) polysaccharides. The antibacterial effects vs Escherichia coli and as well as Staphylococcus aureus of GC polysaccharides were examined by means of agar diffusion assay, minimum inhibitory concentration (MIC), outer and inner cell membrane permeability. Antioxidant potential of the GC polysaccharides were performed by free radical DPPH scavenging, superoxide anion scavenging, hydroxyl radical scavenging, reducing power potential assay, and hydrogen peroxide method. Cytotoxicity potential of GC polysaccharides were evaluated by MTT assay in human cervical (HeLa) and liver carcinoma (HepG2) cell lines. The findings showed that GC polysaccharides MIC were 1.06 and 0.56 mg mL −1 against E. coli and S. aureus, respectively. Compared to the standard inhibitor, the GC polysaccharides showed essential inhibitor assays in a very dose dependent approach, and notable actions to scavenge reactive oxygen species (ROS) are also due to the large quantities of hydrophilic polyphenols. The IC 50 values of all tested parameters were measured against standard ascorbic acid antioxidant agent. The GC polysaccharides diminish the cell viability percentage of HeLa and HepG2 in a concentration dependent manner. GC polysaccharides at a dose of 500 µg ml −1 exhibited higher anti-tumor activity in both HeLa (65.33 ± 3.75%) and HepG2 (60.33 ± 3.48%). The findings obtained in this study indicate that GC polysaccharides has antibacterial and has a possible source of natural antioxidant and also has cytotoxic effect on different carcinoma cell lines.

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Preparation and characterization of contact active antibacterial surface based on chemically modified nanofibrillated cellulose by phenanthridinium silane salt

Cited by 19 publications

References 52 publications

Fast Strategy to Functional Paper Surfaces

Fast Strategy to Functional Paper Surfaces

Fabrication of Carboxylic Acid and Imidazolium Ionic Liquid Functionalized Porous Cellulosic Materials for the Efficient Conversion of Carbon Dioxide into Cyclic Carbonates

Anti-bacterial, anti-scavenging and cytotoxic activity of garden cress polysaccharides

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