There's plenty of published papers describing mixing CNTs with, MMCs, CMCs, etc but they do not specifically explain why CNTs withstand ball milling or crashing during mixing.
Dear Mustafa,
First you have to clearly mention the milling procedure (Type of mill used, ball to powder ratio and time) you adopted. As you have asked about CNTs withstanding high energy ball milling may not be right, because,
1. When SWCNT/DWCNT are milled alone, the quality decreases, can lead to formation of multi-layered polyaromatic carbon materials and damage to the walls. Ref: Carbon 42 (2004) 1691–1697 & Int. J. Nanotechnol., Vol. 4, No. 5, 2007.
2. In case of CNT/Al & CNT/Cu nano composites fabricated by ball-milling and powder metallurgy have shown increasing the ball-milling time resulted in serious damage to the CNTs.
Ref: Journal of Alloys and Compounds 580 (2013) 527–532 & Composites: Part A 43 (2012) 2161–2168.
Again as I said it all depends on ball milling technique with type of mill used, ball to powder ratio and milling time. All these have huge impact on the CNT structure.
You can find a lot of explanations in the articles concerning cleavage of CNTs: http://www.sciencedirect.com/science/article/pii/S0008622304007018
http://www.sciencedirect.com/science/article/pii/S0008622304002386
http://www.sciencedirect.com/science/article/pii/S0009261401000045
Also, a lot of references you can find in our article concerning the ball milling influence on CNFs: http://www.sciencedirect.com/science/article/pii/S0008622311008487
Bannov et al. Structural changes in carbon nanofibers induced by ball milling. Carbon Volume 50, Issue 3, March 2012, Pages 1090–1098.
thanks Alexander , but how can I explain this kind of phenomenon ?
thank you very much for your concern
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