Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/19625
Title: Novel exfoliated graphite nanoplates/syndiotactic polystyrene composites prepared by solution-blending
Authors: He, FA
Wu, HJ
Yang, XL
Lam, KH
Fan, JT
Chan, HLW 
Keywords: AC electrical conductivity
Crystallization behavior
Thermal conductivity
Thermal stability
XGNPs/sPS composites
Issue Date: 2015
Publisher: Elsevier
Source: Polymer testing, 2015, v. 42, p. 45-53 How to cite?
Journal: Polymer testing 
Abstract: Novel exfoliated graphite nanoplates (xGNPs)/syndiotactic polystyrene (sPS) composites were prepared by a simple and effective solution-blending method. The uniform dispersion of xGNPs in sPS matrix was confirmed by scanning electron microscopy. The effect of xGNPs on sPS crystallization behavior was investigated by wide angle X-ray diffraction and differential scanning calorimetry. It was found that the existence of xGNPs increased the crystallization ability of sPS and facilitated the formation of the β phase crystalline structure. By adding 10 wt.% of xGNPs, the increase in the onset degradation temperature of the xGNPs/sPS composite could reach 12°C. The AC electrical conductivity at 1000 Hz increased from 3.8 × 10-10 S/m for neat sPS to 2.25 × 10-4 S/m for xGNPs/sPS composite containing 2.93 vol.% of xGNPs. Moreover, the thermal conductivity of the xGNPs/sPS composite containing 8.26 vol.% has been significantly improved from 0.21 to 1.63 W/m·K when compared with that of pure sPS.
URI: http://hdl.handle.net/10397/19625
ISSN: 0142-9418
DOI: 10.1016/j.polymertesting.2015.01.002
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