فصلنامه
نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه مهندسی مکانیک، واحد خرمآباد، دانشگاه آزاد اسلامی، خرم آباد، ایران
2 گروه میکروبیولوژی ، واحد خرمآباد، دانشگاه آزاد اسلامی، خرم آباد، ایران
3 گروه میکروبیولوژی، واحد خرمآباد، دانشگاه آزاد اسلامی، خرم آباد، ایران
کلیدواژهها
عنوان مقاله English
نویسندگان English
This research examines the elastic property as one of the mechanical properties and antibacterial properties of cellulose nanoparticles and rosemary plant extract and their effect on the overall performance of epoxy biocomposites based on cellulose nanoparticle and rosemary extract. In this article, rosemary plant is used to determine the antimicrobial activity. At first, the samples were made for uniform distribution with four weight percents (pure, 0.5%, 1%, 1.5%, 2%) of rosemary extract, nano cellulose and the combination of extract and nano cellulose.Then the samples were subjected to tensile test and the results indicate that the Young's modulus started to increase from 0.5% by weight and the highest Young's modulus is obtained at 1.5% by weight of the reinforcements. Also, the mechanical properties of the samples started to decrease at 2% by weight, which can be due to the clumping or agglomeration of non-reinforcers in the epoxy, which reduces its mechanical properties. In the antibacterial test, based on the results, Escherichia coli bacteria did not show sensitivity to rosemary extract and no lack of growth was observed. This is while Staphylococcus aureus bacteria showed sensitivity to rosemary extract and recorded a 20 mm diameter halo. Finally, Staphylococcus bacteria is sensitive to the manufactured biocomposites and the best antibacterial performance was observed in the hybrid biocomposite at 2% by weight.
کلیدواژهها English
