Tailoring Assembly of Reduced Graphene Oxide Nanosheets to Control Gas Barrier Properties of Natural Rubber Nanocomposites

2014 ◽  
Vol 6 (4) ◽  
pp. 2230-2234 ◽  
Author(s):  
Giuseppe Scherillo ◽  
Marino Lavorgna ◽  
Giovanna G. Buonocore ◽  
Yanhu H. Zhan ◽  
Hesheng S. Xia ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Natural Rubber ◽  
Reduced Graphene Oxide ◽  
Barrier Properties ◽  
Graphene Oxide Nanosheets ◽  
Gas Barrier ◽  
Reduced Graphene ◽  
Rubber Nanocomposites ◽  
Gas Barrier Properties

In situ synthesis of the reduced graphene oxide–polyethyleneimine composite and its gas barrier properties

2013 ◽  
Vol 1 (11) ◽  
pp. 3739 ◽  
Author(s):  
Hongyu Liu ◽  
Tapas Kuila ◽  
Nam Hoon Kim ◽  
Bon-Cheol Ku ◽  
Joong Hee Lee
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Barrier Properties ◽  
In Situ Synthesis ◽  
Gas Barrier ◽  
Reduced Graphene ◽  
Gas Barrier Properties

scholarly journals Multifunctionality of Reduced Graphene Oxide in Bioderived Polylactide/Poly(Dodecylene Furanoate) Nanocomposite Films

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2938
Author(s):  
Giulia Fredi ◽  
Mahdi Karimi Jafari ◽  
Andrea Dorigato ◽  
Dimitrios N. Bikiaris ◽  
Riccardo Checchetto ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Crystallization Kinetics ◽  
Barrier Properties ◽  
Nanocomposite Films ◽  
Gas Barrier ◽  
Reduced Graphene ◽  
Variable Weight ◽  
Gas Barrier Properties

This work reports on the first attempt to prepare bioderived polymer films by blending polylactic acid (PLA) and poly(dodecylene furanoate) (PDoF). This blend, containing 10 wt% PDoF, was filled with reduced graphene oxide (rGO) in variable weight fractions (from 0.25 to 2 phr), and the resulting nanocomposites were characterized to assess their microstructural, thermal, mechanical, optical, electrical, and gas barrier properties. The PLA/PDoF blend resulted as immiscible, and the addition of rGO, which preferentially segregated in the PDoF phase, resulted in smaller (from 2.6 to 1.6 µm) and more irregularly shaped PDoF domains and in a higher PLA/PDoF interfacial interaction, which suggests the role of rGO as a blend compatibilizer. rGO also increased PLA crystallinity, and this phenomenon was more pronounced when PDoF was also present, thus evidencing a synergism between PDoF and rGO in accelerating the crystallization kinetics of PLA. Dynamic mechanical thermal analysis (DMTA) showed that the glass transition of PDoF, observed at approx. 5 °C, shifted to a higher temperature upon rGO addition. The addition of 10 wt% PDoF in PLA increased the strain at break from 5.3% to 13.0% (+145%), and the addition of 0.25 phr of rGO increased the tensile strength from 35.6 MPa to 40.2 MPa (+13%), without significantly modifying the strain at break. Moreover, rGO decreased the electrical resistivity of the films, and the relatively high percolation threshold (between 1 and 2 phr) was probably linked to the low aspect ratio of rGO nanosheets and their preferential distribution inside PDoF domains. PDoF and rGO also modified the optical transparency of PLA, resulting in a continuous decrease in transmittance in the visible/NIR range. Finally, rGO strongly modified the gas barrier properties, with a remarkable decrease in diffusivity and permeability to gases such as O2, N2, and CO2. Overall, the presented results highlighted the positive and sometimes synergistic role of PDoF and rGO in tuning the thermomechanical and functional properties of PLA, with simultaneous enhancement of ductility, crystallization kinetics, and gas barrier performance, and these novel polymer nanocomposites could thus be promising for packaging applications.

Effect of organoclay on the gas barrier properties of natural rubber nanocomposites

2012 ◽  
Vol 33 (4) ◽  
pp. 524-531 ◽  
Author(s):  
Meera A.P ◽  
Selvin Thomas P. ◽  
Sabu Thomas
Keyword(s):  
Natural Rubber ◽  
Barrier Properties ◽  
Gas Barrier ◽  
Rubber Nanocomposites ◽  
Gas Barrier Properties

Preparation and Characterization of Reduced Graphene Oxide Based Natural Rubber Nanocomposites

2020 ◽  
Vol 35 (5) ◽  
pp. 493-502
Author(s):  
F. Shahamatifard ◽  
D. Rodrigue ◽  
K. Park ◽  
S. Frikha ◽  
F. Mighri
Keyword(s):  
Graphene Oxide ◽  
Natural Rubber ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene ◽  
Rubber Nanocomposites

The role of reduced graphene oxide on chemical, mechanical and barrier properties of natural rubber composites

2014 ◽  
Vol 102 ◽  
pp. 74-81 ◽  
Author(s):  
Ning Yan ◽  
Giovanna Buonocore ◽  
Marino Lavorgna ◽  
Saulius Kaciulis ◽  
Santosh Kiran Balijepalli ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Natural Rubber ◽  
Reduced Graphene Oxide ◽  
Barrier Properties ◽  
Rubber Composites ◽  
Natural Rubber Composites ◽  
Reduced Graphene

Preparation and Characterization of Reduced Graphene Oxide Based Natural Rubber Nanocomposites

2020 ◽  
Vol 35 (5) ◽  
pp. 493-502
Author(s):  
F. Shahamatifard ◽  
D. Rodrigue ◽  
K. Park ◽  
S. Frikha ◽  
F. Mighri
Keyword(s):  
Graphene Oxide ◽  
Natural Rubber ◽  
Reduced Graphene Oxide ◽  
Photoelectron Spectroscopy ◽  
Second Step ◽  
X Ray ◽  
Reduced Graphene ◽  
Rubber Nanocomposites ◽  
Internal Mixer

Abstract This work describes the effect of reduced graphene oxide (RGO) addition in natural rubber (NR). Firstly, RGO was synthesized based on the improved Hummer’s method then characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA) to confirm that the RGO surface contains hydroxyl, epoxy, and carboxyl functional groups to improve graphene interaction with the NR matrix. In a second step, the synthesized RGO was predispersed in NR latex using the co-coagulation technique then added at different amounts (0 to 2 parts per hundred rubber (phr)) to a basic NR formulation and compounded in an internal mixer. The results show that the crosslink density of the developed NR/RGO nanocomposites increased by 65% for RGO concentration of 2.0 phr. For the same RGO concentration, a significant increase in tensile strength (53%) and Young’s modulus (31%) were also observed. Finally, a significant improvement (26%) of the thermal conductivity was obtained with the addition of only 0.5 phr of RGO.

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