Blake Rowan, Gun'ko Yurii K, Coleman Jonathan, Cadek Martin, Fonseca Antonio, Nagy Janos B, Blau Werner J
The Department of Chemistry, Trinity College, University of Dublin, Dublin 2, Ireland.
J Am Chem Soc. 2004 Aug 25;126(33):10226-7. doi: 10.1021/ja0474805.
Multiwalled carbon nanotubes have been functionalized using n-butyllithium and then covalently bonded to a chlorinated polypropylene. The following addition of the polymer-grafted nanotubes to the chlorinated polypropylene polymer matrix resulted in significant increase of mechanical properties. As nanotube content is increased to 0.6 vol %, Young's Modulus increased by a factor of 3, while both the tensile strength and the toughness increased by factors of 3.8 and 4, respectively. This covalent functionalization enables us to get an efficient dispersion and excellent interfacial stress transfer, potentially leading to new ultra-strong polymer composite materials.
多壁碳纳米管已用正丁基锂进行功能化处理，然后与氯化聚丙烯共价键合。随后将聚合物接枝的纳米管添加到氯化聚丙烯聚合物基体中，导致机械性能显著提高。当纳米管含量增加到0.6体积%时，杨氏模量提高了3倍，而拉伸强度和韧性分别提高了3.8倍和4倍。这种共价功能化使我们能够实现有效的分散和优异的界面应力传递，有可能产生新型超强聚合物复合材料。
