Preparation and Characterization of Chitosan/Zinc Oxide Nanoparticles for Imparting Antimicrobial and UV Protection to Cotton Fabric

Abstract

Synthesis of chitosan/ZnO nanoparticles was performed using different concentrations of ZnO at different temperatures. Nanoparticles of ZnO/chitosan were prepared in rod form with average length 60 nm and average width 5-15 nm. Thus, obtained nanoparticles of ZnO/chitosan were characterized using UV spectrophotometer, FTIR, TEM, X-ray, and SEM. Size and shape of chitosan/ZnO nanoparticles relied on conditions of their synthesis. Notably, chitosan/ZnO in rod form with average length of 60 nm and average width 5-15 nm could be achieved. Application of chitosan/ZnO nanoparticles to cotton fabric conferred on the latter antibacterial and UV protection properties. Cotton fabric was characterized using SEM, ultraviolet protection factor (UPF) rating, and antibacterial (gram-positive and gram-negative) characteristics. Finished cotton fabric exhibited good antibacterial properties against gram-positive and gram-negative bacteria. The UV testes indicated a significant improvement in UV protection of finished cotton fabric which is increasing by increasing the concentration of nanoparticles of ZnO/chitosan.

Design and Characterization of Endostatin-Loaded Nanoparticles for In Vitro Antiangiogenesis in Squamous Cell Carcinoma

“…Similarly, amidation reaction between the carboxyl group on the bifunctional PEG and the free amine on the grafted CHT-g-PEI through NHS/EDC cross linkers was employed to synthesize the amino terminal CHT-PEI-PEG conjugate for endostatin encapsulation. The structural and functional modification of both CHT-g-PEI and CHT-g-PEI-PEG-NH 2 conjugates were confirmed by both 1 H NMR and FT-IR spectra as presented in Figures 2 and 3, respectively [19][20][21][22][23][24].…”

“…Meanwhile, an absorption peak at 3389.4 cm −1 was attributed to the N-H stretch from the free primary amine group attached to the PEG in the conjugate (CHT-g-PEI-PEG-NH 2 ). Similarly, the characteristic peak of PEI was represented as an absorption peak of 822.1 cm −1 while the peak at 871.2 cm −1 was assigned to CHT [23]. Notably, the characteristic peak of PEG at 842 cm −1 contributing to the absorption of CH 2 from -[CH 2 CH 2 O] -was also found in the spectrum of the CHT-g-PEI-PEG-NH 2 polymer conjugate, which confirms its presence in the polymer construct [24].…”

Modification of Silica Coated on Iron Sand Magnetic Material with Chitosan for Adsorption of Au(III)

“…An FTIR spectrometer (Nicolet Avatar 360 IR), an X-Ray Diffractometer (XRD) Rigaku Multiplex, a scanning electron microscope (SEM)/energy-dispersive X-ray (EDX) spectroscopy (JEOL JSM-6360LA), a vibrating sample magnetometer (VSM) (OXFORD 1,2T), and Thermogravimetric analysis (TGA) NETZSCH STA 449F1 Jupiter were used for characterization of the produced materials. The stability of chitosan on the iron sand magnetic material coated silica was examined by measuring the absorbance of dissolved chitosan using UV-Vis spectrometer (Shimadzu) [21]. Iron ion concentration released from the materials and Au(III) in supernatant were determined using a flame atomic absorption spectrophotometer (FAAS, Analytic Jena 300).…”

Nanotoxicology of Metal Oxide Nanoparticles

“…The biogenic zinc oxide nanoparticles demonstrated antifungal activity against selected fungal species (A. niger, A. fumigatus and A. aculeatus) [113]. ZnO2 nanoparticles were employed as antimicrobial agents and were incorporated into materials such as textiles and personal care items [114]. Green synthesized zinc nanoparticles (size 16-108 nm), using leaves of Parthenium hysterophorous, demonstrated enzymatic and microbial activity [115].…”