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Effect of Cellulose Fiber Reinforcement on the Temperature Dependent Mechanical Performance of Nylon 6
1 Department of Wood and Paper Science and Technology Faculty of Natural Resources, University of Tehran, Karaj, Iran
* To whom correspondence should be addressed.
In order to quantify the effect of temperature on the mechanical properties of pure nylon 6 and its composite with cellulose fibers (containing 25 wt% cellulose fibers), the materials were sampled and tested at three representative temperatures of 256, 296, and 336 K. Flexural and tensile tests were performed and the reductions in mechanical properties were evaluated. The highest reductions were observed in stiffness (modulus) values and the cellulose fibers remarkably enhanced the high temperature resistance of nylon. The reductions in mechanical properties were well explained by a simple quadratic curve fitting procedure applied to experimental data. Dynamic mechanical analysis (DMA) was also performed to study the effect of temperature on mechanical performance. No shifting in glass transition temperature was observed, but the composite material showed less viscous behavior as seen by its lower mechanical loss factor (tan Key Words: composites, mechanical properties, temperature, nylon, cellulose
First published on August 29, 2008, doi:10.1177/0731684408093875 |
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) values in the rubbery state. The results of the present study will be helpful in determining the end-use application of these composite materials.