Electrospinning of antibacterial cellulose acetate/polyethylene glycol fiber with in situ reduced silver particles
- PDF / 3,102,452 Bytes
- 13 Pages / 595.276 x 790.866 pts Page_size
- 85 Downloads / 227 Views
ORIGINAL PAPER
Electrospinning of antibacterial cellulose acetate/polyethylene glycol fiber with in situ reduced silver particles Sushmita Majumder1 · Md Abdul Matin2 · Ahmed Sharif1 · M Tarik Arafat3 Received: 26 May 2020 / Accepted: 17 November 2020 © The Polymer Society, Taipei 2020
Abstract A novel composition of antibacterial fiber mat, consisting of cellulose acetate (CA), polyethylene glycol (PEG) and silver particles (AgPs) was fabricated by electrospinning. This study presents a facile method for incorporating AgPs into the fiber mat by in situ reduction of silver nitrate by the electrospinning solvent, 2:1 acetone/N,N Dimethyl acetamide (DMAc). The solution of CA/PEG/AgPs was electrospun and the obtained fiber mat was characterized by field emission scanning electron microscopy (FESEM) which revealed smooth fibers of CA with a diameter in the range 250–400 nm. Interestingly, the surface of the fibers appeared striated on addition of the PEG. FESEM also showed AgPs of size 10 nm incorporated into the fiber. Formation of AgPs was also confirmed by UV–Vis, which generated Plasmon peak at 420 nm. It appeared that PEG not only stabilized the formed AgPs against agglomeration but also improved water uptake of the CA fiber mat by ~ 95%. This improved swelling property of the fiber mat shows the ability to absorb more wound exudates. Attenuated total reflectanceFourier transform infrared spectroscopy (ATR-FTIR), differential scanning calorimetry (DSC), X-ray diffraction (XRD) and tensile test were performed to analyze the structural, thermal and mechanical properties of the CA/PEG/AgPs fiber mat. Finally, the electrospun fiber mat showed satisfactory antibacterial efficacy against gram-negative bacteria Escherichia coli (E. coli) and gram-positive bacteria Staphylococcus aureus (S. aureus). Keywords Electrospinning · Cellulose acetate · Silver particles · Polyethylene glycol · Antibacterial effect · In situ reduction
Introduction Electrospinning has been acknowledged as a versatile and the most reported approach for electrostatic fabrication of polymeric fibers with diameters ranging from tens of nanometer to micrometer under the influence of a high voltage [1, 2]. This range of fiber size is highly beneficial as this possesses high surface area, substantial permeability, structural * M Tarik Arafat [email protected] 1
Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology (BUET), Dhaka 1000, Bangladesh
2
Department of Glass and Ceramic Engineering, Bangladesh University of Engineering and Technology (BUET), Dhaka 1000, Bangladesh
3
Department of Biomedical Engineering, Bangladesh University of Engineering and Technology (BUET), Dhaka 1205, Bangladesh
uniqueness and functionality which render their use in multifaceted applications such as wound dressing applications, tissue engineering, drug delivery, filtration, heavy metal adsorptions etc. [3, 4]. Among the various tested polymers for electrospinning, cellulose acetate (CA) stands
Data Loading...
