Keyword search (4,163 papers available)

"Polyvinyl alcohol" Keyword-tagged Publications:

Title Authors PubMed ID
1 Sodium alginate/polyvinyl alcohol semi-interpenetrating hydrogels reinforced with PEG-grafted-graphene oxide Mehrjou A; Hadaeghnia M; Ehsani Namin P; Ghasemi I; 38423903
ENCS
2 Preparation and Characterization of Eco-Friendly Transparent Antibacterial Starch/Polyvinyl Alcohol Materials for Use as Wound-Dressing Mohammad Mohsen Delavari 35744574
ENCS

 

Title:Preparation and Characterization of Eco-Friendly Transparent Antibacterial Starch/Polyvinyl Alcohol Materials for Use as Wound-Dressing
Authors:Mohammad Mohsen Delavari
Link:https://pubmed.ncbi.nlm.nih.gov/35744574/
DOI:10.3390/mi13060960
Publication:Micromachines
Keywords:characterizationpolyvinyl alcoholstarch-based filmssurface morphologytransparentultrasound mixingwound-dressing
PMID:35744574 Category: Date Added:2022-06-24
Dept Affiliation: ENCS
1 Department of Mechanical, Industrial and Aerospace Engineering, Concordia University, Montreal, QC H3G 1M8, Canada.

Description:

In this study, eco-friendly and transparent starch-based/polyvinyl alcohol/citric acid composite films are evaluated for their efficacy as wound dressing materials. The starch/polyvinyl alcohol (PVA) materials with added citric acid (0.46-1.83 wt%) and glycerol were made and handled based on the modified casting method. This new formulation decreases the amount of PVA used in the conventional preparation method. Citric acid ensures an appropriate antibacterial environment for wound-dressing materials. The mechanical, chemical, and surface morphological properties of such films were assessed and analyzed by tensile strength tests, UV-Vis spectrometry, swelling index, and scanning electron microscopy (SEM). Furthermore, the water vapor transmission (WVT) quantity was measured for an ideal wound-healing process to investigate an optimal moisture environment around the wound bed. Moreover, the pH level of the dressings was measured to examine the possibility of bacterial growth around these starch-based films. Additionally, the films' in-vitro antibacterial activities were studied against the two most common Gram-positive and Gram-negative bacteria (Escherichia coli and Staphylococcus aureus). The new starch-based dressings demonstrated suitable degradation, antibacterial activity, fluid absorption, and adequate mechanical strength, representing wound-dressing materials' vital features.





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