Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 68, Issue -, Pages 1-9Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2014.09.016
Keywords
Polymer-matrix composites (PMCs); Mechanical properties; Electrical properties
Funding
- Doctoral Research Foundation from Science and Technology Commission of Shandong province [BS2011CL12]
- Natural Scientific Foundation of China [51407087, 51273096, 51373081]
- National One-Thousand Foreign Expert Program [WQ20123700111]
- Shandong Province Project: Tackle Key Problem in Key Technology [2010GGX10327]
- Program of Qingdao Science Technology [12-1-4-2-(8)-jch]
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Graphene was noncovalently functionalized with poly(sodium 4-styrenesulfonate) (PSS) and then successfully incorporated into the epoxy resin via in situ polymerization to form functional and structural nanocomposites. The morphology and structure of PSS modified graphene (PSS-g) were characterized with transmission electron microscopy, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The effects of PSS-g additions on tensile, electrical and thermal properties of the epoxy/graphene nanocomposites were studied. Noncovalent functionalization improved interfacial bonding between the epoxy matrix and graphene, leading to enhanced tensile strength and modulus of resultant nanocomposites. The PSS-g additions also enhanced electrical properties of the epoxy/PSS-g nanocomposites, resulting in a lower percolation threshold of 1.2 wt%. Thermogravimetric and differential scanning calorimetric results showed the occurrence of a two-step decomposition process for the epoxy/PSS-g nanocomposites. (C) 2014 Elsevier Ltd. All rights reserved.
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