نتایج جستجو برای: elongation to break (eb)
تعداد نتایج: 10627733 فیلتر نتایج به سال:
the effect of enzymatic treatment time of microbial transglutaminase (mtgase) on the characteristics of whey protein isolate (wpi) films was investigated. results shown that the properties of mtgase-treated films were affected by increasing the enzymatic treatment time. enzymatic treatment at lower incubation time, i.e. for 1 h, significantly resulted in higher values of tensile strength (ts) a...
The aim of this research is improvement of elongation at break of PBXN-109 polymer bonded explosive. Due to the great effect of isocyanate/hydroxyl ratio (r=NCO/OH) on mechanical properties of plastic bonded explosives, in this research, the samples of PBXN-109 with different r-values of 1, 0.95, 0.85, 0.75 and 0.65 were prepared and analyzed by hardness and tensile tests. The results show that...
Thin films of were prepared by casting and its tensile properties like tensile strength (TS) and elongation at break (Eb%) were studied. The gelatin films were procured with two types of monomers such as 5% ethylene glycol (EG) and 5% ethylene glycol dimethacrylate (EGDMA) to increase the tensile properties. Five percent of monomer solutions were prepared in MeOH along with 2% photoinitiator; I...
in the past decades, environmental pollution caused by plastic packing materials, restrictions of petroleum resources and their high price attracted many researchers to produce biodegradable packaging materials. poor mechanic properties and high water vapor permeability are two main defects of biodegradable polymers. nanotechnology is a modification method in this case. in the current study, th...
The aim of this research is investigation of mechanical properties regarding the polyurethanes as the binder of plastic bonded explosives. Due to the great effect of mechanical properties on application of these materials, the influence of Isocyanate/Hydroxyl ratio, crosslink density, the type of curing agent, hard segment and temperature on mechanical properties of these materials were investi...
in this research, the mechanical properties of seven types of nanofilm with differing amounts of silver and silver-clay particles were studied. the elasticity of modulus, tensile strength, toughness, elongation at break, tear strength and color of nanofilms were compared with those of ordinary ldpe film. results showed that the inclusion of nano particles increased the modulus of elasticity, te...
Background and Objectives: Bioactive packaging systems (coatings/films) are novel technology concepts in food industries. Bioactive compounds such as antioxidants, vitamins, probiotics and prebiotics are designed to be included in coatings or coating materials that directly affect health of consumers. The aim of this study was to assess feasibility of producing prebiotic edible films by adding ...
Preserved eggs are prone to lose water during storage, which causes the preserved shrink and have poor taste, bad flavor, reduced quality. By studying a degradable coating agent applying it eggs, we explored its effect on quality of storage. In this paper, structure performance gelatin film (GF), gelatin–bacterial cellulose (GBF), cellulose–MgO nanocomposite (GBMF) were by adding bacterial (BC)...
UNLABELLED Chitosan is a biopolymer obtained by N-deacetylation of chitin, produced from shellfish waste, which may be employed to elaborate edible films or coatings to enhance shelf life of food products. This study was conducted to evaluate the effect of different concentrations of nanofiller (cellulose nanofibers, CNF) and plasticizer (glycerol) on tensile properties (tensile strength-TS, el...
improvements in the properties of ordinary sidewall compound (nr/br) with the addition of epdm by reactive processing method were evaluated. the results show that ozone resistance of these sidewalls was improved with increased addition of epdm. also the tensile strength and elongation-at-break were increased in comparison with nrbrepdm compounds that were made by non-reactive processing. sem ph...
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