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On the Sensitivity of the Nanostructural Parameters on Young’s Modulus of PLSNs in Fully Intercalated StructuresPolymeric Materials Research Group, Materials Science and Engineering Department Sharif University of Technology, P.O. Box 11155-9466, Tehran, Iran, rezabagh{at}sharif.edu
Polymeric Materials Research Group, Materials Science and Engineering Department Sharif University of Technology, P.O. Box 11155-9466, Tehran, Iran
Polymeric Materials Research Group, Materials Science and Engineering Department Sharif University of Technology, P.O. Box 11155-9466, Tehran, Iran Polymer-layered silicate nanocomposites have been observed to demonstrate enhanced mechanical properties particularly at low weight fractions of silicate. Experimental and theoretical investigations reveal that numerous structural parameters strongly influence the modulus of such nanocomposites. A multiscale micromechanical model is developed which considers a wide range of different affecting parameters including the particle aspect ratio, the number of silicate layers per stack, the d-spacing ratio between the layers, the penetration of polymer chains along silicate sheets, the intercalation feature, and the particle volume fraction. The developed model illustrates the accuracy and flexibility superiorly compared with the conventional models proposed in the literature. Moreover, good agreement is found between the experimental data and the modeling results.
Key Words: polymer-layered silicate nanocomposites (PLSNs) • multiscale modeling • fully intercalated structures.
This version was published on November
1, 2009 Journal of Composite Materials, Vol. 43, No. 24,
2921-2941 (2009) |
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