You are here
Challenges in modeling of CNT/polymer composites
Tue, 2008-04-29 05:34 - Kazem Yazdchi
Many researchers have already used micromechanical modeling techniques such as Mori-Tanaka (M-T), Self-consistent methods and dilute inclusion models depending on volume fraction and shape of the inclusions, etc., to predict the overall mechanical properties of CNT/polymer composites. However, we know that at nano scales the phenomenological behavior of material is different in comparison with micro or macro scales. Although the effects of waviness, interactions, agglomeration, etc. of CNTs have successfully investigated, the question is if it is correct to use such modeling techniques in nano scale. Thank you very much for your comments indeed.
»
- Kazem Yazdchi's blog
- Log in or register to post comments
- 6355 reads
Comments
Good topic
Thie issue, of continuum versus non-continuum behavior, is in my opinion a primary concern in modern mechanics. Please see the previous discussion thread here .
This will be discussed in part in the new Journal Club entry of 1 May! Please feel free to add to the discussion then.
Re: Challenges in modeling of CNT/polymer composites
This is a very good topic. CNT can easily form bundles (agglomeration) in polymer matrix. Those bundles are "micro-fibers." The following papers may help.
Xiaodong Li, Hongsheng Gao, Wally A. Scrivens, Dongling Fei, Xiaoyou Xu, Michael A. Sutton, Anthony P. Reynolds and Michael L. Myrick, "Nanomechanical Characterization of Single-Walled Carbon Nanotube-Reinforced Epoxy Composites," Nanotechnology,15 (2004) 1416-1423.
Xiaodong Li, Hongsheng Gao, Wally A Scrivens, Dongling Fei, Xiaoyou Xu, Michael A Sutton, Anthony P Reynolds, and Michael L Myrick, "Reinforcing Mechanisms of Single-walled Carbon Nanotube- Reinforced Polymer Composites, " Journal of Nanoscience and Nanotechnology, 7 (2007) 2301-2308.
Re: Xiaodong
Dear Xiaodong, Very nice papers! I think such "Experimental" techniques may better describe the overall behavior of CNT/polymer composites. However, I am wondering why there is not any analytical or theoretical techniques for predicting their mechanical properties yet. As I previously mentioned, according to my opinion the "Micromechanical" techniques can not describe their behavior well.