PEGylated graphene oxide-based nanocomposite-grafted chitosan/polyvinyl alcohol nanofiber as an advanced antibacterial wound dressing

RSC Advances ◽  
2016 ◽  
Vol 6 (73) ◽  
pp. 69103-69116 ◽  
Author(s):  
Poornima Dubey ◽  
P. Gopinath
Keyword(s):  
Graphene Oxide ◽  
Polyvinyl Alcohol ◽  
Wound Dressing ◽  
Bacterial Resistance ◽  
Composite Nanomaterials

Designing composite nanomaterials that display multiple antibacterial mechanisms offers new prototypes against bacterial resistance.

Preclinical assessment of chitosan–polyvinyl alcohol–graphene oxide nanocomposite scaffolds as a wound dressing

2021 ◽  
pp. 096739112110292
Author(s):  
Arash Montazeri ◽  
Fariba Saeedi ◽  
Yaser Bahari ◽  
Ahmad Ahmadi Daryakenari
Keyword(s):  
Graphene Oxide ◽  
Polyvinyl Alcohol ◽  
Wound Dressing ◽  
Biological Properties ◽  
Mouse Fibroblast ◽  
Wound Dressings ◽  
In Vivo Studies ◽  
Nanocomposite Scaffolds

The present research aimed to examine the biological properties of chitosan (CS)–polyvinyl alcohol (PVA) scaffolds reinforced with graphene oxide (GO) nanosheets, as wound dressings. The scaffolds were characterized by various techniques. The scanning electron microscopy (SEM) and thermogravimetry analyses (TGAs) were used to investigate distribution of the GO within the polymer. The viscoelastic properties were evaluated by dynamic mechanical thermal analysis (DMTA) to examine the quality of a wound dressing. In vitro and in vivo studies were conducted to assess the biocompatibility of the scaffolds as wound dressing. The cell viability and proliferation results indicated that mouse fibroblast cells (L929) could adhere on the 50CS–50PVA/3 wt% GO scaffold. Herewith, the fabricated CS–PVA–GO nanocomposite scaffolds are suggested as promising biomaterials for skin tissue engineering and wound dressing.

Graphene oxide/polyethylene glycol aerogel reinforced with grape seed extracts as wound dressing

2021 ◽  
Author(s):  
Jessica Borges-Vilches ◽  
Javiera Poblete ◽  
Fernando Gajardo ◽  
Claudio Aguayo ◽  
Katherina Fernández
Keyword(s):  
Graphene Oxide ◽  
Polyethylene Glycol ◽  
Wound Dressing ◽  
Grape Seed ◽  
Grape Seed Extracts ◽  
Seed Extracts

Structural analysis of α-zirconium phosphate/cerium phosphate/graphene oxide nanocomposites with flame-retardant properties in polyvinyl alcohol

2020 ◽  
Vol 44 (11) ◽  
pp. 4568-4577 ◽  
Author(s):  
Qian Leng ◽  
Junyi Li ◽  
Yuhua Wang
Keyword(s):  
Graphene Oxide ◽  
Structural Analysis ◽  
Polyvinyl Alcohol ◽  
Flame Retardant ◽  
Zirconium Phosphate ◽  
Cerium Phosphate ◽  
Ternary Nanocomposite ◽  
Flame Retardant Properties ◽  
Synergistic Flame Retardant

A ternary nanocomposite was developed, which exhibits novel synergistic flame-retardant effect with APP-containing PVA.

In vitro and in vivo study of carboxymethyl chitosan/polyvinyl alcohol for wound dressing application

2021 ◽  
pp. 51764
Author(s):  
Alireza Akbari ◽  
Shahram Rabbani ◽  
Shiva Irani ◽  
Mojgan Zandi ◽  
Fereshteh Sharifi ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Wound Dressing ◽  
Carboxymethyl Chitosan ◽  
In Vivo Study

scholarly journals Cement-Based Materials Containing Graphene Oxide and Polyvinyl Alcohol Fiber: Mechanical Properties, Durability, and Microstructure

Nanomaterials ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 638 ◽  
Author(s):  
Wenguang Jiang ◽  
Xiangguo Li ◽  
Yang Lv ◽  
Mingkai Zhou ◽  
Zhuolin Liu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Flexural Strength ◽  
Polyvinyl Alcohol ◽  
Mechanical Strength ◽  
Mechanical Performance ◽  
Control Sample ◽  
Corrosion Condition ◽  
Cement Based Materials ◽  
Strength And Durability ◽  
Pva Fiber

The influence of graphene oxide (GO) and polyvinyl alcohol (PVA) fiber on the mechanical performance, durability, and microstructure of cement-based materials was investigated in this study. The results revealed that compared with a control sample, the mechanical strength and durability of cement-based materials were significantly improved by adding PVA fiber and GO. The compressive and flexural strength at 28 d were increased by 30.2% and 39.3%, respectively. The chloride migration coefficient at 28 d was reduced from 7.3 × 10−12 m2/s to 4.3 × 10−12 m2/s. Under a sulfate corrosion condition for 135 d, the compressive and flexural strength still showed a 13.9% and 12.3% gain, respectively. Furthermore, from the Mercury Intrusion Porosimetry (MIP) test, with the incorporation of GO, the cumulative porosity decreased from more than 0.13 cm3/g to about 0.03 cm3/g, and the proportion of large capillary pores reduced from around 80% to 30% and that of medium capillary pores increased from approximately 20% to 50%. Scanning electron microscope (SEM) images showed a significant amount of hydration products adhering to the surface of PVA fiber in the GO and PVA fiber modified sample. The addition of GO coupling with PVA fiber in cement-based materials could promote hydration of cement, refine the microstructure, and significantly improve mechanical strength and durability.

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