期刊
POLYMER TESTING
卷 27, 期 3, 页码 330-339出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymertesting.2007.12.002
关键词
polymer; nanocomposite; mechanical properties; structure; rheology
The mechanical properties of polyamide-12/Cloisite 30B (PA 12/C30B) nanocomposites prepared by melt compounding were studied as a function of clay volume fraction 0 under various processing conditions. All measured mechanical characteristics, Young's modulus, yield stress, strain at break and stress at break, exhibit a transition at phi(p)similar to 1%, identified with a percolation threshold. Also, the linear and non-linear mechanical properties appeared to depend on the degree of exfoliation of the structure, which can be tuned by the processing conditions. The three-phase Ji's theoretical model was used to predict Young's modulus as a function of clay concentration, focusing on the influence of the degree of exfoliation. Experimental yield stress data were fitted to Pukanszky's model and discussed in terms of PA 12/C30B interfacial adhesion. (C) 2008 Published by Elsevier Ltd.
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