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Effect of relative humidity on mechanical strength of zirconia/ Nafion® Nano-composite membrane | ||
Journal of Computational & Applied Research in Mechanical Engineering (JCARME) | ||
مقاله 4، دوره 7، شماره 2 - شماره پیاپی 14، خرداد 2018، صفحه 175-187 اصل مقاله (4.36 M) | ||
نوع مقاله: Research Paper | ||
شناسه دیجیتال (DOI): 10.22061/jcarme.2017.2484.1239 | ||
نویسندگان | ||
Fulufhelo Nemavhola* 1؛ Simon Dhlamini2؛ Rudzani Sigwadi2؛ Touhami Mokrani2 | ||
1University of South Africa Department of Mechanical and Industrial Engineering | ||
2University of South Africa | ||
تاریخ دریافت: 31 فروردین 1396، تاریخ بازنگری: 31 خرداد 1396، تاریخ پذیرش: 01 شهریور 1396 | ||
چکیده | ||
This paper presents the results of mechanical strength of wet and dry zirconia/ Nafion® nano-composite membrane. The tensile tests were conducted to determine elastic modulus and stiffness of dry and wet pristine Nafion® membrane and modified Nafion® membrane. The composite membranes were prepared by recast method of different synthesized zirconium oxide with the zirconia content of 10% by weight. The uniaxial mechanical properties of nano-composite membranes and recast Nafion® membrane were captured using a CellScale UStretch uniaxial testing system. The length, width, and thickness of samples were measured using a Vernier caliper and recorded prior to testing. It was found that elastic modulus of the wet Nafion recast is 62.06 %, 35.26 %, 30.79 % and 35.26 % higher than that of Nafion®/ Zr-100, Nafion/® Zr-80, Nafion®/Zr-50, and Nafion®/Zr-0, respectively. The elastic modulus of dry Nafion recast, Nafion®/Zr-100, Nafion®/Zr-80, Nafion®/Zr-50, and Nafion/Zr-0 membranes are 46.29 %, 83.31 %, 64.81 %, 59.84 %, and 78.36 % higher than those of wet Nafion® recast, Nafion®/Zr-100, Nafion®/Zr-80, Nafion®/Zr-50, and Nafion®/Zr-0 membranes, respectively. Furthermore, the results showed that when the water content increases in the nano-composite membranes the mechanical strength also decreases. | ||
کلیدواژهها | ||
Tensile strength؛ Stiffness of nano membrane؛ Nano-composite؛ Relative humidity | ||
مراجع | ||
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