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The purpose of this paper is the study of tensile and bending behavior of polyamide with nano clay by different modifier and corrections in the work condition. Many previous studies about behavior mechanical had been done in standardize condition or after dried samples. However result of this research is not proper for applied design. In this research polyamide is mixed with three kinds of nano clay, By the way of melt intercalated with 9, 7, 5, 3, 1 percents. The samples were tested by X-ray diffraction, for clarifying nano composite morphology. After that tensile and bending tests were done on standard samples. Results show that mechanical property can be improved by added any kind of nano clay to polyamide. Nanocomposites have exfoliated structure if nano clay had more compatibility to polyamide. Moduli tensile and bending were improved with increase nano clay concentration. Although CL30B have best exfoliated structure therefore has most modules in beading and tensile.

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Due to disadvantages of synthetic packaging materials such as migration into food, polluting of environment, difficulty of recovery, high costs of raw materials and production, also for development of properties of starch based edible film, in this study nanocomposite films from starch and montmorillonite (MMT)  fabricated and their properties investigated. In this regard, nanocomposite films formulated by mixing starch and four levels of nanoclay (0, 1, 3 and 5%) and three different concentrations of glycerol (20, 30 and 40%), then the physical and mechanical properties of film measured and appropriate film selected.  5 % nano-clay could  improve tension resistance (38%) and moisture permeability (33%). The results from XRD showed that nanoclays spread evenly in starch polymer. The effects of ultrasound waves on the optimum film were investigated. These waves improve mechanical properties and permeability of films remarkably. 30 minutes was the best time of ultrasounication processing. Results showed that optimum nanocomposite of starch-nanoclay could be used as a biodegradable suitable packaging for preserving food.

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In this study, using design of experiments, the effect of hybrid graphenenanosheets and nano clay and compatibilizer maleic anhydride -grafted -polypropylene (PP-g-MA) on the impact strength polypropylene-based nanocomposites were investigated. Design of experiments and analysis of experimental data with Minitab 16 software and response surface methodology were carried out. Making nanocomposites, based on the melt mixing was performed. Statistical models provided by response surface methodology good agreement with experimental results and with respect to the values of R-sq and R-sq (adj) have a good reputation. Statistical analysis showed that increasing the percentage of nanoparticles, impact strength decreases. Compounds morphology by Scanning Electron Microscopy (SEM) was performed. Micrographes showed better dispersion of the particles in lower percentages. Thermal analysis using differential scanning calorimetry (DSC) showed that the presence of graphene have little effect on the melting temperature of the sample being tested, but Tc of nanocomposites compared with pure PP, has increased about 4 percent. Also Thecrystallinity was reduced by adding graphene. In the non-graphenenanocomposites, the clay did not affect the melting temperature,but the crystallinityand crystallization temperature increased 10.73 % and 2.23 % respectively compared with pure PP that showed nucleation effect of nano clay.

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Use of nanoparticles in food packaging can be an effective step to reduce waste from pathogens and increase the shelf life of various products. The aim of this study was to investigate the antifungal effect of low-density polyethylene nanocomposite film containing nano clay halloysite/carvacrol hybrid and chitosan on pathogenic fungi including Aspergillus niger, Aspergillus flavus, Boterytis cinera, Penicillium Sp. and Rhizopus oryzae, the main cause of post-harvest rot of agricultural products. In this study, the nanocomposite films based on Low-density polyethylene containing 1.5 & 3% nano clay halloysite/carvacrol and 1 & 2% chitosan were produced by mixing them in a twin-screw extruder following by blowing film machine. The effect of these produced nanocomposites were then evaluated on the growth of five pathogenic fungal species. Based on the results of analysis of variance, it was found that the growth rate of the five studied fungal species was significantly affected by use of Nano clay Halloysite/carvacrol, so that the highest percentage of inhibition was related to the film containing 3% nano clay halloysite/carvacrol. However, the film containing chitosan had no significant effect on the growth of the studied fungi.