Please use this identifier to cite or link to this item:
Title: Structure-property relationship in polyethylene reinforced by polyethylene-grafted multi-walled carbon nanotubes
Authors: Causin, V.
Yang, B.-X.
Marega, C.
Goh, S.H. 
Marigo, A.
Keywords: Mechanical properties
Multiwalled carbon nanotubes
Small and wide angle x-ray scattering
Issue Date: Apr-2008
Citation: Causin, V.,Yang, B.-X.,Marega, C.,Goh, S.H.,Marigo, A. (2008-04). Structure-property relationship in polyethylene reinforced by polyethylene-grafted multi-walled carbon nanotubes. Journal of Nanoscience and Nanotechnology 8 (4) : 1790-1796. ScholarBank@NUS Repository.
Abstract: Polyethylene-grafted multiwalled carbon nanotubes (PE-g-MWNT) were used to reinforce polyethylene (PE). The nanocomposites possessed not only improved stiffness and strength, but also increased ductility and toughness. The effects on the structure and morphology of composites due to pristine multiwalled carbon nanotubes (MWNT) and PE-g-MWNT were studied and compared using small angle X-ray scattering (SAXS), wide angle X-ray diffraction (WAXD) and differential scanning calorimetry (DSC). The SAXS long period, crystalline layer thickness and crystallinity of polymer lamellar stacks were found to decrease significantly in MWNT composites, while the decreases were much smaller in PE-g-MWNT composites. PE-g-MWNT allowed a more efficient and unhindered crystallization at a lamellar level, while MWNT disrupted the order of lamellar stacks, probably because of their tendency to aggregate. The SAXS crystallinity and the mechanical properties of the composites showed similar trends as a function of MWNT content. This suggested that the improvement of the interfacial strength between polymer and carbon nanotubes was a result of synergistic effects of better dispersion of the filler, better stress transfer, due to the grafting of polymer and MWNT, and the nucleation of a crystalline phase around MWNT. The latter effect was confirmed by measurements of kinetics of non-isothermal crystallization. Copyright © 2008 American Scientific Publishers All rights reserved.
Source Title: Journal of Nanoscience and Nanotechnology
ISSN: 15334880
DOI: 10.1166/jnn.2008.028
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Oct 15, 2018

Page view(s)

checked on Oct 20, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.