Microstructural, mechanical, and thermal characteristics of recycled cellulose fiber-halloysite-epoxy hybrid nanocomposites

Handle URI:
http://hdl.handle.net/10754/598835
Title:
Microstructural, mechanical, and thermal characteristics of recycled cellulose fiber-halloysite-epoxy hybrid nanocomposites
Authors:
Alamri, H.; Low, I. M.
Abstract:
Epoxy hybrid-nanocomposites reinforced with recycled cellulose fibers (RCF) and halloysite nanotubes (HNTs) have been fabricated and investigated. The dispersion of HNTs was studied by synchrotron radiation diffraction (SRD) and transmission electron microscopy (TEM). The influences of RCF/HNTs dispersion on the mechanical properties and thermal properties of these composites have been characterized in terms of flexural strength, flexural modulus, fracture toughness, impact toughness, impact strength, and thermogravimetric analysis. The fracture surface morphology and toughness mechanisms were investigated by SEM. Results indicated that mechanical properties increased because of the addition of HNTs into the epoxy matrix. Flexural strength, flexural modulus, fracture toughness, and impact toughness increased by 20.8, 72.8, 56.5, and 25.0%, respectively, at 1 wt% HNTs load. The presence of RCF dramatically enhanced flexural strength, fracture toughness, impact strength, and impact toughness of the composites by 160%, 350%, 444%, and 263%, respectively. However, adding HNTs to RCF/epoxy showed only slight enhancements in flexural strength and fracture toughness. The inclusion of 5 wt% HNTs into RCF/epoxy ecocomposites increased the impact toughness by 27.6%. The presence of either HNTs or RCF accelerated the thermal degradation of neat epoxy. However, at high temperature, samples reinforced with RCF and HNTs displayed better thermal stability with increased char residue than neat resin. © 2012 Society of Plastics Engineers.
Citation:
Alamri H, Low IM (2012) Microstructural, mechanical, and thermal characteristics of recycled cellulose fiber-halloysite-epoxy hybrid nanocomposites. Polym Compos 33: 589–600. Available: http://dx.doi.org/10.1002/pc.22163.
Publisher:
Wiley-Blackwell
Journal:
Polymer Composites
Issue Date:
26-Feb-2012
DOI:
10.1002/pc.22163
Type:
Article
ISSN:
0272-8397
Sponsors:
The authors thank Ms E. Miller from Applied Physicsat Curtin University for assistance with SEM. The authorsare also grateful to Dr. Rachid Sougrat from King Abdullah University of Science and Technology for performingthe TEM images. Finally, we thank Andreas Viereckl ofMechanical Engineering at Curtin University for the helpwith Charpy Impact Test. We thank Dr. Zied Alothmanfrom King Saud University for assistance with the TGAexperiment .
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Full metadata record

DC FieldValue Language
dc.contributor.authorAlamri, H.en
dc.contributor.authorLow, I. M.en
dc.date.accessioned2016-02-25T13:42:08Zen
dc.date.available2016-02-25T13:42:08Zen
dc.date.issued2012-02-26en
dc.identifier.citationAlamri H, Low IM (2012) Microstructural, mechanical, and thermal characteristics of recycled cellulose fiber-halloysite-epoxy hybrid nanocomposites. Polym Compos 33: 589–600. Available: http://dx.doi.org/10.1002/pc.22163.en
dc.identifier.issn0272-8397en
dc.identifier.doi10.1002/pc.22163en
dc.identifier.urihttp://hdl.handle.net/10754/598835en
dc.description.abstractEpoxy hybrid-nanocomposites reinforced with recycled cellulose fibers (RCF) and halloysite nanotubes (HNTs) have been fabricated and investigated. The dispersion of HNTs was studied by synchrotron radiation diffraction (SRD) and transmission electron microscopy (TEM). The influences of RCF/HNTs dispersion on the mechanical properties and thermal properties of these composites have been characterized in terms of flexural strength, flexural modulus, fracture toughness, impact toughness, impact strength, and thermogravimetric analysis. The fracture surface morphology and toughness mechanisms were investigated by SEM. Results indicated that mechanical properties increased because of the addition of HNTs into the epoxy matrix. Flexural strength, flexural modulus, fracture toughness, and impact toughness increased by 20.8, 72.8, 56.5, and 25.0%, respectively, at 1 wt% HNTs load. The presence of RCF dramatically enhanced flexural strength, fracture toughness, impact strength, and impact toughness of the composites by 160%, 350%, 444%, and 263%, respectively. However, adding HNTs to RCF/epoxy showed only slight enhancements in flexural strength and fracture toughness. The inclusion of 5 wt% HNTs into RCF/epoxy ecocomposites increased the impact toughness by 27.6%. The presence of either HNTs or RCF accelerated the thermal degradation of neat epoxy. However, at high temperature, samples reinforced with RCF and HNTs displayed better thermal stability with increased char residue than neat resin. © 2012 Society of Plastics Engineers.en
dc.description.sponsorshipThe authors thank Ms E. Miller from Applied Physicsat Curtin University for assistance with SEM. The authorsare also grateful to Dr. Rachid Sougrat from King Abdullah University of Science and Technology for performingthe TEM images. Finally, we thank Andreas Viereckl ofMechanical Engineering at Curtin University for the helpwith Charpy Impact Test. We thank Dr. Zied Alothmanfrom King Saud University for assistance with the TGAexperiment .en
dc.publisherWiley-Blackwellen
dc.titleMicrostructural, mechanical, and thermal characteristics of recycled cellulose fiber-halloysite-epoxy hybrid nanocompositesen
dc.typeArticleen
dc.identifier.journalPolymer Compositesen
dc.contributor.institutionCurtin University, Perth, Australiaen
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