Nano Archive

Polymer transcrystallinity induced by carbon nanotubes

Zhang, Shanju and Minus, Marilyn L. and Zhu, Lingbo and Wong, Ching-Ping and Kumar, Satish (2008) Polymer transcrystallinity induced by carbon nanotubes. POLYMER, 49 (5). pp. 1356-1364.

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Abstract

In this work, we provide the evidence of polymer transcrystallinity in the presence of carbon nanotubes (CNTs). The interfacial morphology of carbon nanotube fiber-polypropylene matrix is investigated by means of polarized optical microscopy (POM), wide-angle X-ray diffraction (WAXD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The supramolecular microstructures of polypropylene transcrystals induced by the nanotube fiber are observed in the range of isothermal crystallization temperatures from 118 degrees C to 132 degrees C. The dynamic process of transcrystallization is analyzed by using the theory of heterogeneous nucleation. Microstructure analysis shows that the nanotubes can nucleate the growth of both alpha- and gamma-transcrystal, and alpha-transcrystals dominate the overall interfacial morphology. Close to the nanotube fiber surface, a cross-hatched lamellar microstructure composed of mother lamellae and daughter lamellae is observed. (C) 2008 Elsevier Ltd. All rights reserved.

Item Type:Article
Uncontrolled Keywords:carbon nanotubes; polymer transcrystallization; interfacial structures
Subjects:Material Science > Soft materials
Material Science > Nanostructured materials
ID Code:258
Deposited By:Lesley Tobin
Deposited On:26 Nov 2008 14:58
Last Modified:09 Feb 2009 15:42

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