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Nemavhola, Fulufhelo, Dhlamini, Simon, Sigwadi, Rudzani, Mokrani, Touhami. (1396). Effect of relative humidity on mechanical strength of zirconia/ Nafion® Nano-composite membrane. فناوری آموزش, 7(2), 175-187. doi: 10.22061/jcarme.2017.2484.1239
Fulufhelo Nemavhola; Simon Dhlamini; Rudzani Sigwadi; Touhami Mokrani. "Effect of relative humidity on mechanical strength of zirconia/ Nafion® Nano-composite membrane". فناوری آموزش, 7, 2, 1396, 175-187. doi: 10.22061/jcarme.2017.2484.1239
Nemavhola, Fulufhelo, Dhlamini, Simon, Sigwadi, Rudzani, Mokrani, Touhami. (1396). 'Effect of relative humidity on mechanical strength of zirconia/ Nafion® Nano-composite membrane', فناوری آموزش, 7(2), pp. 175-187. doi: 10.22061/jcarme.2017.2484.1239
Nemavhola, Fulufhelo, Dhlamini, Simon, Sigwadi, Rudzani, Mokrani, Touhami. Effect of relative humidity on mechanical strength of zirconia/ Nafion® Nano-composite membrane. فناوری آموزش, 1396; 7(2): 175-187. doi: 10.22061/jcarme.2017.2484.1239

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
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