Development of multifunctional modified cotton fabric with tri-component nanoparticles of silver, copper and zinc oxide.

A novel method for coating of carbon nanotube on cellulose fiber using 1,2,3,4-butanetetracarboxylic acid as a cross-linking agent

This research was carried out to embed hydrophobic silica nano-particles on the cotton surface using 1,2,3,4-butanetetracarboxylic acid (BTCA) as a crosslinking agent and sodium hypophosphite as a catalyst. The influence of the amount of silica nano-particles on the performance of the cotton fibers was investigated employing Attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), Raman spectroscopy (RS), Thermogravimetric analysis (TGA), limited oxygen index (LOI), scanning electron microscopy (SEM), water contact angle (WCA), reflectance spectroscopy (RS) and abrasion resistance (AR). The possible interactions between silica nano-particles, the crosslinking agent and the cotton functional groups at the surface were elucidated by ATR-FTIR and Raman spectroscopy. The results indicated that the embedded silica nano-particles modify the surface of fibers increasing the hydrophobicity and thermal stability of substrate. The microscopic analysis showed a uniform coating of silica nano-particles on the surface of fibers.

Preparation of water-repellent cellulose fibers using a polycarboxylic acid/hydrophobic silica nanocomposite coating

Carbon nanotubes (CNTs) were stabilized on a cotton surface using vinylphosphonic acid monomer as a crosslinking agent and benzophenone as a catalyst. The influence of CNTs and polyvinylphosphonic on the thermal properties and flammability of the cellulose fiber was investigated using Fourier transform infrared spectrophotometer (FTIR), differential scanning calorimeter (DSC), thermo-gravimetric analyzer (TGA), horizontal flammability test (HFT), scanning electron microscope (SEM) and energy dispersive X-ray spectrometer (EDS). The possible interactions between CNTs, polyvinylphosphonic acid and cellulose at the surface were elucidated by the FTIR spectroscopy. The results indicated that polyvinylphosphonic/CNT nanocomposite improves the thermal stability and decreases the flammability of the substrate.

UV radiation induced flame retardant cellulose fiber by using polyvinylphosphonic acid/carbon nanotube composite coating

In this study, carbon nanotubes (CNTs) were stabilized on a cotton surface using 1,2,3,4-butanetetracarboxylic acid (BTCA) as a crosslinking agent and sodium hypophosphite as a catalyst. The influence of CNTs on the performance of the cellulose fiber was investigated using a Raman spectrophotometer, thermogravimetric analyzer, a scanning electron microscope, electrical contacting equipment, and an electromagnetic field detector. The possible interactions between CNTs, a crosslinking agent, and cellulose functional groups at the surface were elucidated by Raman spectroscopy. The results indicate that the stabilized CNTs modify the surface of the fibers and increase the functionality and thermal stability of the substrate. SEM showed a uniform coating of CNTs on the fiber surface.

Functional cellulose fibers via polycarboxylic acid/carbon nanotube composite coating

Fe-pillared bentonite clay-based nanoadsorbent was synthesized by the thermal aging technique. The characteristics of the nanocomposite were detected by X-ray diffraction (XRD), Fourier transform infrared spectra (FTIR), thermal gravimetric analysis (TGA), scanning electron microscope (SEM), electron dispersive X-ray spectrometer (EDX), reflectance spectrophotometer (RS), and electromagnetic transition instrument (ETI). The TGA result demonstrated that the Fe particles generated on the clay surface can significantly improve the thermal stability of clay particles. The SEM and EDX results showed the presence of chemical elements of Fe, Al, and Si on the surface of clay. In this research, the successful synthesis of Fe-pillared clay nanocomposite can be concluded from the FTIR spectra.

Optical and electromagnetic characteristics of clay–iron oxide nanocomposites

Structural, optical and electromagnetic properties of aluminum–clay nanocomposites

We successfully immobilized Fe-pillared clay (Fe-PILC) nanoparticles on a cotton surface via the pad-dry method and achieved cross-linking under ultraviolet irradiation. We investigated the influence of Fe-PILC concentration on the surface morphology, optical and electromagnetic (EM) shielding properties using Fourier-transform infrared spectroscopy, scanning electron microscopy, reflectance spectrophotometry and EM field detector. We demonstrated a simple and versatile method for coating highly absorbent EM shielding nanocomposites on cotton.

Shima Eslami

Papers

Optical and electromagnetic characteristics of clay–iron oxide nanocomposites

Structural, optical and electromagnetic properties of aluminum–clay nanocomposites

A robust method for producing electromagnetic shielding cellulose via iron oxide pillared clay coating under ultraviolet irradiation