Morphological structure and mechanical properties of epoxy/ polysulfone/cellulose nanofiber ternary nanocomposites

Zhang, Yan and Song, Pingan and Fu, Shenyuan and Chen, Fenghua (2015) Morphological structure and mechanical properties of epoxy/ polysulfone/cellulose nanofiber ternary nanocomposites. Composites Science and Technology, 115. pp. 66-71. ISSN 0266-3538

Abstract

Despite some work on epoxy resin/cellulose nanofiber (CNF) system, it remains unclear how CNF affects microstructure and mechanical properties of epoxy/polysulfone (PSF) binary blends so far. We herein introduced CNF into the blends via a combination of solvent exchange and melt mixing. Results show that epoxy/PSF binary blends display three distinct types of phase separated structures but slightly affecting mechanical properties because of poor interfacial adhesion. However, only adding small amount of CNF can enhance impact toughness and tensile strength due to improved interfacial adhesion, probably arising from hydrogen bonding interactions between CNF surfaces and matrix polymers, and penetrating and bridging effects of CNF between different phases. For example, compared with the epoxy/PSF blends, adding 0.2 wt% of CNF can increase impact strength by ∼49%. Additionally, 0.3 wt% of CNF can increase the glass transition temperature by ∼18 °C relative to the epoxy resin.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 13 Jul 2017 03:50
Last Modified: 13 Jul 2017 03:50
Uncontrolled Keywords: Nano composites; Mechanical properties; Thermomechanical properties
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1016/j.compscitech.2015.05.003
URI: http://eprints.usq.edu.au/id/eprint/32726

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