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Publications (36)
Over the past several years, I have been interacting with an increasing number of Iranian scientists, including those currently living in Iran as well as others who are being educated elsewhere or have independent positions outside of that country. In all circumstances, the resulting collaborations have extended my own knowledge and allowed me to c...
This book provides a comprehensive collection of the latest information on nanomaterials and nanocomposites. It covers material synthesis, processing, structure characterization, properties and applications. It presents a coherent treatment of how composite properties depend on nanostructure, and covers cutting-edge topics like bionanocomposites fo...
Delphinium Zalil from the family Ranunculaceae grows naturally in mountainous area of northeast of Iran. It has beautiful yellow flowers which contain flavonoids. In this study, the flowers of D. Zalil were collected, dried, powdered, and extracted with different solvent systems. Quercetin is identified as the main aglycone responsible for the colo...
In this research, wool surface was successfully coated with polypyrrole (PPy) by one-step UV-induced
polymerization using AgNO3 as catalyst for oxidation of pyrrole monomers. The influence of the concentration of materials on the surface morphology, thermal and electromagnetic shielding properties was investigated using FTIR, XRD, SEM, EDS, TGA, RS...
Natural dyes have been employed in dyeing Persian carpet piles for many years. In this study, the dried pistachio hulls were powdered and used for dyeing wool yarns. The Iranian wool yarn was first scoured with nonionic detergent and mordanted using some metal salts including Cu, Cr and Al. It was then dyed with different amounts of dried pistachio...
Natural dyes have been employed in dyeing Persian carpet piles for many years. In this study, the dried pistachio hulls were powdered and used for dyeing wool yarns. The Iranian wool yarn was first scoured with nonionic detergent and mordanted using some metal salts including Cu, Cr and Al. It was then dyed with different amounts of dried pistachio...
Natural products have a long history of use in traditional medicines and their activities
against different diseases have been the focus of many basic and clinical researches
in past few decades. The essential oils, volatile liquid containing aroma compound
from plants, are known as active ingredients in the herbal medicine. Perillyl alcohol
(POH)...
The aim of this work was to assess the possibility of using a bentonite-type clay as a promising substitute for mordants in the natural dyeing of wool with madder. Wool yarn was treated with nanoclay by using three conventional methods of pretreatment (before dyeing), simultaneous dyeing with madder in the presence of clay, and aftertreatment (afte...
This study investigated the changes induced on nylon 6,6 fabric by a mixture of proteolytic and lipolytic enzymes. Technical measurements were studied including those of Fourier-transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), weight loss (WL), bending lengths (BL), scanning electron microscopy (SEM), moisture absorbency...
There has been an increasing consideration in nanotechnology during the present decade due to its enormous potential in applying and creating novel materials for enhanced properties and applications. Numerous studies were undertaken in improving the textiles and clothing properties and performances by applying nanocomposites. Microscopy technique w...
Silver was stabilized on multi-walled carbon nanotubes (MWCNTs) by chemical-reduction technique using N,N-dimethylformamide (DMF) as a reducing agent. The influence of silver on the performance of carbon nanotubes (CNTs) was investigated by employing Fourier-transform infrared spectra (FTIR), Raman spectroscopy (RAS), thermal gravimetric analysis (...
This research work involves the plasma treatment of polyethylene terephthalate fiber to improve performance of various ionic lubricating agents. To do this, polyester fabric was pre-scoured with detergent, treated with atmospheric-air plasma and then coated with anionic, cationic and nonionic emulsions. Chemical and physical properties of samples w...
This study confirms the structural changes of nylon 6 fibers using lipase by measuring the dyeability, hydrophilicity, chemical changes, and fastness properties. For this purpose, nylon 6 fabrics were first treated separately with different concentrations of lipase enzyme. The dyeing process was then carried out on the treated fabrics with two disp...
In recent years, the textile industry must go towards sustainable technologies and developing environmentally safer methods for textiles processing. One way is the processing with enzymatic system, rather than conventional chemical methods. The aim of this work was to investigate the changes induced on nylon 6,6 fiber by enzymatic system using diff...
The best established application of biotechnology to textiles is
the use of enzymes. These vital parts of all living organisms
are organic catalysts with specific in the reaction catalyzed and
substrates selectivity. Traditional chemical treatments are replaced
by enzymes because of their lower product quality, higher manufacturing
cost, more waste...
Wool Dyeing Anthocyanin Eggplant Mordant oday, natural colorants are emerging globally due to their safety and environmental friendly characteristics. Natural dyes have been employed in dyeing Persian carpet piles for many years. Food and fruit industry wastes are one of the main sources of colorants which can be employed for textile coloration. Eg...
n this work, raw fibers of a local species of stabraq (milkweed) were scoured, bleached and blended with cotton fibers with a ratio of 75/25 (cotton/stabraq). The improved stabraq fibers, scoured and bleached cotton and the blended fibers were spun into fine yarns and then they were subjected to dyeing with two types of reactive dyes namely, cold b...
Gum Tragacanth (GT) is one of the most widely used natural gum across the globe and it is shown that GT from Asteragalus gummifer can be processed into fiber via alkaline treatment. In this study a complementary description of GT fibers is provided and the effects of influencing factors on properties of GT fibers investigated. Spinning Dope (SD) pr...
For centuries silk had a reputation as a luxurious and sensuous fabric, and been associated with wealth and success. It is one of the oldest textile fibers known to man. It has been used by the Chinese since the 27th century BC. This fiber is sensitive to UV radiation and sun light can damage it. So, designing and modifying silk fibers in such a wa...
In the presented research the effects of ultrasonic US on worn out process is under consideration. Samples of two different vats dyed denim fabrics chosen and were worn out with the aid of sodium hydrosulphite and neutral cellulase enzyme individually and together and the effects of ultrasound were investigated in parallel testes. Pictures were tak...
An evaluation has been carried out of the effect of ammonia on the colouristic properties of wool dyed with a range of natural dyes containing anthraquinone, naphthaquinone, flavone and tannin structures. It was found in all cases that after-treatment with ammonia caused a decrease in the lightness (L*) values. The reasons for this are discussed, a...
Solution properties of tragacanthin (the water-soluble part of gum tragacanth) were studied by gel permeation chromatography (GPC) combined with multi-angle light scattering and viscometry at 25 degrees C. Photon correlation spectroscopy was used to determine the hydrodynamic radius. Ultrasonic degradation was applied to obtain biopolymer fractions...
An evaluation has been carried out of the effect of ammonia on the colouristic properties of wool dyed with a range of natural dyes containing anthraquinone, naphthaquinone, flavone and tannin structures. It was found in all cases that after-treatment with ammonia caused a decrease in the lightness (L*) values. The reasons for this are discussed, a...
Mainly leather is dyed using anionic dyestuffs such as acid, direct and metal complex dyes, but the use of pigments is not common for leather dyeing. Dye penetration into the inner layers of the leather is a difficult task due to 3D infrastructure of leather. In the present study, an attempt has been made to improve the exhaustion of nano-pigment i...