Solid acid-reduced graphene oxide nanohybrid for enhancing thermal stability, mechanical property and flame retardancy of polypropylene

RSC Advances ◽  
2015 ◽  
Vol 5 (51) ◽  
pp. 41307-41316 ◽  
Author(s):  
Bihe Yuan ◽  
Lei Song ◽  
Kim Meow Liew ◽  
Yuan Hu
Keyword(s):  
Mechanical Property ◽  
Thermal Stability ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Flame Retardancy ◽  
Solid Acid ◽  
Radical Trapping ◽  
Trapping Effect ◽  
Reduced Graphene

PMoA enhances the radical trapping effect of graphene.

Synthesis and investigation of thermal properties of PMMA-maleimide-functionalized reduced graphene oxide nanocomposites

2018 ◽  
Vol 33 (1) ◽  
pp. 85-96
Author(s):  
Thangamani Rajkumar ◽  
Nagamuthu Muthupandiyan ◽  
Chinnaswamy Thangavel Vijayakumar
Keyword(s):  
Thermal Stability ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Chemical Interaction ◽  
Weight Percent ◽  
Bulk Polymerization ◽  
Pmma Matrix ◽  
Uniform Dispersion ◽  
Reduced Graphene ◽  
Thermal Stability Of

Reduced graphene oxide (RGEO) and N-[4-(chlorocarbonyl)phenyl]maleimide-functionalized reduced graphene oxide (MFRGEO) were used as nanofillers for polymethyl methacrylate (PMMA) matrix nanocomposites to enhance thermal stability. Methyl methacrylate containing nanofiller of four different weight percent (0.2, 0.4, 0.6, and 0.8) was polymerized using ultrasonic radiation-assisted bulk polymerization. The Fourier-transform infrared spectra showed the absence of chemical interaction between the filler and the matrix phase. Morphology of nanocomposites studied using scanning electron microscope confirmed the assistance aided by ultrasonication in the uniform dispersion of nanofiller in the PMMA matrix. Thermogravimetric (TG) study revealed the presence of MFRGEO enhanced the thermal stability of PMMA by shifting the entire degradation to higher temperature. The thermal stability of PMMA nanocomposite was improved by as much as 40°C at just 0.8 wt% loading of MFRGEO. Differential TG study also supported the role of maleimide functionalization on RGEO in the enhancement of thermal stability of PMMA by means of retarding the degradation rate of unsaturated chain ends in the PMMA matrix. Unlike MFRGEO, RGEO failed to enhance the thermal stability of PMMA.

Functionalized reduced graphene oxide/epoxy composites with enhanced mechanical properties and thermal stability

2017 ◽  
Vol 63 ◽  
pp. 1-11 ◽  
Author(s):  
Suman Chhetri ◽  
Nitai Chandra Adak ◽  
Pranab Samanta ◽  
Naresh Chandra Murmu ◽  
Tapas Kuila
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Epoxy Composites ◽  
Reduced Graphene

scholarly journals A novel, mesoporous molybdenum doped titanium dioxide/reduced graphene oxide composite as a green, highly efficient solid acid catalyst for acetalization

2020 ◽  
Vol 49 (12) ◽  
pp. 3786-3795
Author(s):  
Wimalika R. K. Thalgaspitiya ◽  
Tharindu Kankanam Kapuge ◽  
Junkai He ◽  
Peter Kerns ◽  
Andrew G. Meguerdichian ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Oxide Composite ◽  
Highly Efficient ◽  
Reduced Graphene ◽  
Doped Titanium Dioxide

A novel, mesoporous molybdenum doped titanium dioxide-reduced graphene oxide composite is synthesized as a highly efficient heterogeneous solid acid catalyst.

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