scholarly journals Preparation of epoxidized novolac resin nanocomposites: Physical and chemical incorporation of modified graphene oxide layers for improvement of thermal stability

2018 ◽  
Vol 68 ◽  
pp. 467-474 ◽  
Author(s):  
Sina Shahi ◽  
Hossein Roghani-Mamaqani ◽  
Mehdi Salami-Kalajahi ◽  
Hamidreza Ebrahimi
Keyword(s):  
Thermal Stability ◽  
Graphene Oxide ◽  
Novolac Resin ◽  
Oxide Layers ◽  
Modified Graphene Oxide ◽  
Modified Graphene ◽  
Physical And Chemical

scholarly journals Adamantane-Modified Graphene Oxide for Cyanate Ester Resin Composites with Improved Properties

2019 ◽  
Vol 9 (5) ◽  
pp. 881 ◽  
Author(s):  
Zhicong Miao ◽  
Juntao Shi ◽  
Tianjiao Liu ◽  
Peng Li ◽  
Zhiqiang Su ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Dielectric Constant ◽  
Graphene Oxide ◽  
Interfacial Polarization ◽  
Cyanate Ester ◽  
Scanning Calorimetry ◽  
Modified Graphene Oxide ◽  
Potential Applications ◽  
Cure Temperature ◽  
Modified Graphene

The conjugation of graphene and polymers has attracted great attention for the fabrication of functional hybrid nanomaterials. Here, we demonstrate the modification of graphene oxide (GO) with adamantane (AMT) through the diimide-activated amidation reaction. The modification of GO with AMT improves the dispersion and decreases the interfacial polarization of GO, causing a lower dielectric constant for the fabricated GO/AMT hybrid materials. The structures of GO/AMT were studied by Fourier transform infrared spectroscopy and Raman spectroscopy. Furthermore, the mechanical properties, thermal stability, and dielectric constant of GO/AMT composites were measured at a low cured temperature using various techniques, such as differential scanning calorimetry, thermogravimetric analysis, and dynamic mechanical thermal analysis. It was found that the synthesized GO/AMT materials with different contents were blended into cyanate ester (CE) resins, resulting in a lower cure temperature, smaller dielectric constant, higher thermal stability, and stronger water resistance. It is expected that this novel GO/AMT-CE material will have potential applications for replacing traditional thermosetting resins.

Preparation, characterization, and chemical-induced hydrophobicity of thermostable amine-modified graphene oxide

RSC Advances ◽  
2015 ◽  
Vol 5 (127) ◽  
pp. 105393-105399 ◽  
Author(s):  
Jing Wang ◽  
Hong-Zhang Geng ◽  
Zhi-Jia Luo ◽  
Songting Zhang ◽  
Jinqiu Zhang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Graphene Oxide ◽  
Small Molecule ◽  
Contact Angles ◽  
Oxide Surfaces ◽  
Graphene Oxides ◽  
Excellent Thermal Stability ◽  
Modified Graphene Oxide ◽  
Modified Graphene

A small molecule was grafted onto the graphene oxide surfaces using two different approaches and the obtained amine-modified graphene oxides have excellent thermal stability and significantly enhanced water/air contact angles.

Polyimide foams with outstanding flame resistance and mechanical properties by the incorporation of noncovalent bond modified graphene oxide

2020 ◽  
Vol 44 (28) ◽  
pp. 12068-12078 ◽  
Author(s):  
Hongtao Liu ◽  
Huafeng Tian ◽  
Yuanyuan Yao ◽  
Aiming Xiang ◽  
Haisong Qi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Graphene Oxide ◽  
Flame Resistance ◽  
Noncovalent Bond ◽  
Composite Foams ◽  
Modified Graphene Oxide ◽  
Modified Graphene

PI composite foams were in situ generated by incorporating modified GO to further improve flame resistance, thermal stability and mechanical properties.

Biocompatible electrospinning poly(vinyl alcohol) nanofibres embedded with graphene-based derivatives with enhanced conductivity, mechanical strength and thermal stability

RSC Advances ◽  
2014 ◽  
Vol 4 (99) ◽  
pp. 56373-56384 ◽  
Author(s):  
Yuan-Hsiang Yu ◽  
Chih-Chieh Chan ◽  
Yu-Chia Lai ◽  
Yan-Yu Lin ◽  
Ying-Chieh Huang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Graphene Oxide ◽  
Mechanical Strength ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Modified Graphene Oxide ◽  
Electrospun Nanofibres ◽  
Modified Graphene ◽  
Enhanced Conductivity

Biocompatible poly(vinyl alcohol) nanocomposite electrospun nanofibres embedded with glycine-modified graphene oxide and nanogold-deposited graphene oxide with substantially enhanced conductivity, mechanical strength, and thermal stability.

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