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. 2013 Dec 16;7:31. doi: 10.1186/1754-1611-7-31

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Copyright © 2013 Gu and Catchmark; licensee BioMed Central Ltd.

This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Mechanical properties of PLA and its composites. (a-b) Typical strain–stress curves of PLA and PLA composites: (a) PLA-CNW composites and (b) PLA-CS-CNW composites; (c) Young’s modulus of all samples. T-test results are displayed as letters on the top of columns. A column with the same letter represents no significant difference (p > 0.05). (d) Tensile strength and strain at break of PLA-CNW composites; (e) Tensile strength and strain at break of PLA-CS-CNW composites. ϵ represents stress. σ represents strain.