The preparation and properties of polystyrene/functionalized graphene nanocomposite foams using supercritical carbon dioxide

2012 ◽  
Vol 62 (7) ◽  
pp. 1077-1084 ◽  
Author(s):  
Chaoqun Li ◽  
Guanghui Yang ◽  
Hua Deng ◽  
Ke Wang ◽  
Qin Zhang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Functionalized Graphene ◽  
Nanocomposite Foams ◽  
Graphene Nanocomposite ◽  
Supercritical Carbon

The Preparation, Morphology and Electrical Properties of Polystyrene/Graphene Nanocomposite Foams Using Supercritical Carbon Dioxide

2013 ◽  
Vol 771 ◽  
pp. 51-54
Author(s):  
Ying Hu Li ◽  
Li Kuo Zhou ◽  
Chao Qun Li
Keyword(s):  
Carbon Dioxide ◽  
Electrical Properties ◽  
Supercritical Carbon Dioxide ◽  
Functional Materials ◽  
Nanocomposite Foams ◽  
Chemically Reduced Graphene Oxide ◽  
Graphene Nanocomposite ◽  
Higher Temperature ◽  
Foaming Temperature ◽  
Supercritical Carbon

In this work, polystyrene/ graphene nanocomposite foams were prepared using supercritical carbon dioxide. Chemically reduced graphene oxide were incorporated into PS using latex mixing. Subsequently, the nanocomposites were foamed with supercritical CO2, the foaming temperature is varied. The morphology and electrical properties of the foamed samples were discussed. It is suggested that foaming temperature has significant influence on the morphology of foams. For those samples foamed at higher temperature, foams have thin cell wall and low density even when the content of graphene is relatively high, while they possess good electrical conductivity, may be used as light weight functional materials.

Solvent-Exfoliated and Functionalized Graphene with Assistance of Supercritical Carbon Dioxide

2012 ◽  
Vol 1 (1) ◽  
pp. 144-151 ◽  
Author(s):  
Lihua Li ◽  
Xiaoli Zheng ◽  
Jianjun Wang ◽  
Qiang Sun ◽  
Qun Xu
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Functionalized Graphene ◽  
Supercritical Carbon

Foaming of CNTs/PMMA Nanocomposite with Supercritical Carbon Dioxide

2012 ◽  
Vol 508 ◽  
pp. 61-64 ◽  
Author(s):  
Yuan Lu Xiong ◽  
Qiang Shen ◽  
Huan Yuan ◽  
Fei Chen ◽  
Guo Qiang Luo
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Cell Density ◽  
Cell Structure ◽  
Cell Distribution ◽  
Emi Shielding ◽  
Blowing Agent ◽  
Foaming Process ◽  
Nanocomposite Foams ◽  
Supercritical Carbon

The CNTs/PMMA Nanocomposite Foams Are a Kind of Novel Multifunctional Foams which Have a Potential Application for Lightweight Conductive and EMI Shielding Materials. In this Work, the CNTs/PMMA Nanocomposite Foams with Different CNTs Contents from 1wt.% to 10wt.% Were Prepared at a Temperature Range of 50-140 °C with Supercritical Carbon Dioxide as Blowing Agent. The Results Suggest that the Fully Heterogeneous Nucleation Is Achieved due to the Contribution of Well-Dispersed CNTs in PMMA. The CNTs/PMMA Nanocomposite Foams Exhibit a Uniform Cell Distribution, and the Cell Density Is Two Orders of Magnitude Higher than that of PMMA Foams. The Cell Size and Cell Density of CNTs/PMMA Nanocomposite Foams Could Be Controlled by Adjusting the Foaming Process and CNTs Contents. It Is Also Suggested that the Foaming Process Plays an Important Role on the Cell Structure Rather than that of CNTs Content when it Is Higher than 1wt.%.

Processing of nanocomposite foams in supercritical carbon dioxide. Part I: Effect of surfactant

Polymer ◽  
2010 ◽  
Vol 51 (15) ◽  
pp. 3436-3444 ◽  
Author(s):  
Thi Thanh Van NGO ◽  
Jannick Duchet-Rumeau ◽  
Andrew K. Whittaker ◽  
Jean-François Gerard
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Nanocomposite Foams ◽  
Supercritical Carbon
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