Structure and properties of polystyrene/graphene oxide nanocomposites

Mohammadsalih, Zaid G.; Sadeq, Noor S.

doi:10.1080/1536383x.2021.1943367

Cited by 12 publications

(8 citation statements)

References 56 publications

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“…60,61 In Figure 4A, no visible difference can be seen but careful inspection shows thermal degradation temperature (T d ) of GNPs curve with 0.25 loading have shifted toward higher temperature as compared to neat epoxy at initial degradation between 300 C and 400 C. This attributes to enhancement in thermal stability for nanocomposites which can be justified by concept of homogeneous dispersion of GNP in polymer matrix. 12 This same behavior was reported by a research group 62 as they displays an increased T d in polystyrene when it was loaded with (0.1, 0.5, and 1.0) weight percent of graphene based material. Results showed that low percentage of loading of graphene-based material can improve thermal properties of polymer matrices.…”

Section: Thermogravimetric Analysis (Tga)supporting

confidence: 76%

“…The plastic industry generally employs melt processing, although the quality of dispersion achieved through this method is comparatively lower. 12 Moreover, melt blending causes buckling of graphene due to high shear forces, which have a negative impact on conductivity of composites. 13 High shear force in melt blending also causes breakage of filler materials like CNT and graphene nanosheets.…”

Section: Introductionmentioning

confidence: 99%

“…The solution blending and in situ, polymerization have proven to be highly successful and widely acknowledged in the scientific community. The plastic industry generally employs melt processing, although the quality of dispersion achieved through this method is comparatively lower 12 . Moreover, melt blending causes buckling of graphene due to high shear forces, which have a negative impact on conductivity of composites 13 .…”

Section: Introductionmentioning

confidence: 99%

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Thermal, mechanical, thermo‐mechanical and morphological properties of graphene nanoplatelets reinforced green epoxy nanocomposites

Yusuf,

Sapuan,

Rashid

et al. 2023

Polymer Composites

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The efficient inclusion of GNPs (graphene nanoplatelets) as an effective nano‐fillers for green polymer matrices produced with 28% of carbon originating from biomass tends to significantly improve mechanical and thermal properties. In the present work, green epoxy nanocomposites with low loading of (0.1, 0.25, and 0.5) wt% of the GNPs were made using a solution blending technique using acetone as the solvent. In mechanical stirring, the ultrasonic bath was used to ensure the efficient dispersion of GNPs within green epoxy. The resulting nanocomposites were comprehensively characterized and compared to unfilled green epoxy. Different tools were used to appraise morphological, thermal, thermo‐mechanical, and mechanical behavior. The results confirmed through FE‐SEM showed an optimal dispersion of GNPs with nanocomposites. The thermal degradation temperature (Td) of GNPs curve with 0.25 wt% loading was shifted toward higher temperature (from 336°C to 342°C) due to low percentage of loading of GNPs which showed an enhance thermal stability of polymer matrix with 0.25 wt% loading. The mechanical results were also in lined with previously published literature, in the tensile test 6.45% and hardness 13.3% increment was achieved. Overall, the results underscored significant improvements in green nanocomposite performance with low wt% of GNPs.Highlights The study focuses on development and characterization of green epoxy nanocomposites, which utilize environmentally friendly materials as a matrix, highlighting the significance of sustainability. The study explores effects of low loading of GNPs in green epoxy nanocomposites. The results demonstrate significant improvements in mechanical and thermal properties with optimized presence of GNPs. This investigation provides insights into optimal amount of GNPs required to achieve improved properties. Research evaluates multifaceted analysis provides a holistic understanding of performance enhancements achieved through inclusion of GNPs.

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Section: Thermogravimetric Analysis (Tga)supporting

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Thermal, mechanical, thermo‐mechanical and morphological properties of graphene nanoplatelets reinforced green epoxy nanocomposites

Yusuf,

Sapuan,

Rashid

et al. 2023

Polymer Composites

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“…Along with this absorption band, the characteristic absorption peaks corresponding to C–H vibrations of the benzene ring present in the EPS/rGO composite are also observed at (747, 903, 1025, 1450, 1491, 1599) cm −1 . 20 Further, from the literature, it is observed that the presence of peak at 1025 cm −1 is owing to the π–π stacking interaction of the both graphene oxide and polystyrene. 21 The presence of both symmetric and asymmetric vibrations of the methylene group present in the EPS can be identified by the presence of peaks at (2918, 2851) cm −1 .…”

Section: Resultsmentioning

confidence: 93%

“…Further, the band at 794 cm −1 represents the out of plane bending vibration of C–H group belong to the benzene ring. 20 The sharp absorption band at 694 cm −1 indicates the π–π interaction between the both graphene oxide and polystyrene molecule present in the composite. Along with this absorption band, the characteristic absorption peaks corresponding to C–H vibrations of the benzene ring present in the EPS/rGO composite are also observed at (747, 903, 1025, 1450, 1491, 1599) cm −1 .…”

Section: Resultsmentioning

confidence: 99%