Enhanced thermal conductivity and dimensional stability of flexible polyimide nanocomposite film by addition of functionalized graphene oxide

2012 ◽  
Vol 62 (5) ◽  
pp. 827-835 ◽  
Author(s):  
I-Hsiang Tseng ◽  
Jen-Chi Chang ◽  
Shih-Liang Huang ◽  
Mei-Hui Tsai
Keyword(s):  
Thermal Conductivity ◽  
Graphene Oxide ◽  
Dimensional Stability ◽  
Nanocomposite Film ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Polyimide Nanocomposite ◽  
Enhanced Thermal Conductivity

scholarly journals Styrene-Based Elastomer Composites with Functionalized Graphene Oxide and Silica Nanofiber Fillers: Mechanical and Thermal Conductivity Properties

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1682
Author(s):  
Jaehyeung Park ◽  
Jaswinder Sharma ◽  
Kyle W. Monaghan ◽  
Harry M. Meyer ◽  
David A. Cullen ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Thermal Conductivity ◽  
Graphene Oxide ◽  
Styrene Butadiene Rubber ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
X Ray ◽  
Liquid Mixing ◽  
Silica Nanofibers ◽  
Styrene Butadiene

The mechanical and thermal conductivity properties of two composite elastomers were studied. Styrene–butadiene rubber (SBR) filled with functionalized graphene oxide (GO) and silica nanofibers, and styrene–butadiene–styrene (SBS) block copolymers filled with graphene oxide. For the SBR composites, GO fillers with two different surface functionalities were synthesized (cysteamine and dodecylamine) and dispersed in the SBR using mechanical and liquid mixing techniques. The hydrophilic cysteamine-based GO fillers were dispersed in the SBR by mechanical mixing, whereas the hydrophobic dodecylamine-based GO fillers were dispersed in the SBR by liquid mixing. Silica nanofibers (SnFs) were fabricated by electrospinning a sol–gel precursor solution. The surface chemistry of the functionalized fillers was studied in detail. The properties of the composites and the synergistic improvements between the GO and SnFs are presented. For the SBS composites, GO fillers were dispersed in the SBS elastomer at several weight percent loadings using liquid mixing. Characterization of the filler material and the composite elastomers was performed using x-ray photoelectron spectroscopy, x-ray diffraction, transmission electron microscopy, scanning electron microscopy, thermogravimetric analysis, dynamic mechanical analysis, tensile testing, nanoindentation, thermal conductivity and abrasion testing.

scholarly journals Mechanical, thermal, and dielectric properties of functionalized graphene oxide/polyimide nanocomposite films

2019 ◽  
Vol 9 ◽  
pp. 184798041882103 ◽  
Author(s):  
Srosh Fazil ◽  
Masroor Bangesh ◽  
Wajid Rehman ◽  
Khurram Liaqat ◽  
Shaukat Saeed ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Composite Films ◽  
Fold Increase ◽  
High Thermal Stability ◽  
Dielectric Constants ◽  
Nanocomposite Films ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Percent Improvement ◽  
Polyimide Nanocomposite

Ethyltriethoxysilane-functionalized graphene oxide/polyimide composite films were synthesized. Eighty percent improvement in Young’s modulus, high thermal stability at 800°C, and 3.46-fold increase in dielectric constants compared to polyimide with a dielectric loss of only 0.035 were exhibited by these composite films.

Polymer Functionalized Graphene Oxide: A Versatile Nanoplatform for Drug/Gene Delivery

2015 ◽  
Vol 19 (18) ◽  
pp. 1828-1837 ◽  
Author(s):  
George V. Theodosopoulos ◽  
Panayiotis Bilalis ◽  
Georgios Sakellariou
Keyword(s):  
Graphene Oxide ◽  
Gene Delivery ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide
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