kefiran is an exopolysaccharide produced by microorganisms present in the kefir grains that has several health promoting properties. in this research, physico-mechanical and thermal characteristics of nanocomposite film composed of kefiran-montmorillonite (mmt; 1, 3 and 5% w/w) were studied. results showed that the thickness and the tensile strength of the films increased by increasing the nano...

the main objective of this study was to produce ldpe active films containing metallic nanoparticles (ag, zno and cuo) and to investigate their physical, mechanical and anti-microbial characteristics. three types of metallic nanoparticles at concentrations of 1% (w/w) were added to low density polyethylene (ldpe) and the films were prepared using melt extrusion technique. sem results indicated r...

twenty-two bread wheat cultivars along with susceptible (sholeh) and resistant (azadi) control cultivars were evaluated for resistance to russian wheat aphid of two growth stages including seedling and stem elongation in greenhouse. five adult aphids per plant were used for infestation. leaf chlorosis at seedling and stem elongation stages and leaf rolling at seedling stage were measured. other...

The paper presents the results of analysis cotton weight per boll, yield, fiber output, length and quality newly created medium-fiber “Nasib” variety, which is studied as selection test. A three-year microneur, hardness, length, uniformity, index short fibers, elongation at break, soiling, defect count, reflectivity yellowness presented.

Abstract Background The strength of cotton fiber has been extensively studied and significantly improved through selective breeding, but elongation largely ignored, even though contributes to determining the energy needed break fibers. Recent developments calibrate high volume instrument (HVI) for renewed interest in elongation. However, it is not understood how best utilize yet another propert...

Shogaol and gingerol, compounds in ginger, can act as antiemetic. Ginger extract was formulatedby patch transdermal to increase the effectiveness of therapy minimize side effects. Inthis study, maceration with ethanol 96% used extraction method phytochemical screeningwas carried out identfy exctracted compounds. The formulation transdermalpatch matrix ginger concentrations 0,5 gr (F1), 1 (F2), ...

polymer/clay nanocomposites are considered as a new subject of research in iran and the world. addition of a minimum amount of clay (2-5wt%) can improve the mechanical properties, enhance barrier properties and reduce flammability dramatically. polystyrene (ps) exhibits high strength, high modulus and excellent dimensional stability, but it has poor ductility, elongation, and flexural modulus. ...

This study aimed to investigate the impact of heat treatment on properties soy protein isolate film-forming solutions. The solutions, consisting isolate, glycerol, and phosphate buffer solution (pH 7.4), were subjected at 65, 75, 85°C for 2, 4, or 6 h. resulting films then analyzed tensile strength, elongation break, film solubility, color parameters, transparency. results indicated that increa...

In the present study, a better knowledge of the influence of plasticizer content, storage relative humidity and film thickness on the mechanical properties of high amylose corn starch based films gelatinized at low temperature, is presented. The mechanical properties, tensile strength and percentage of elongation at break of high amylose corn starch films plasticized with glycerol were evaluate...

The purpose of this study was to investigate the influence aging on properties high-density polyethylene (HDPE) reinforced with multi-wall carbon nanotubes (MWCNTs). Nanocomposites were prepared at 0, 1, 3, and 5 wt%. long-term durability materials evaluated by thermo-oxidative test. Test bodies aged 110°C for up 10 weeks. nanocomposites characterized differential scanning calometry, thermograv...