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Graphene nanoplatelets as novel reinforcement filler in poly(lactic acid)/epoxidized palm oil green nanocomposites: mechanical properties.

Chieng BW, Ibrahim NA, Yunus WM, Hussein MZ, Giita Silverajah VS - Int J Mol Sci (2012)

Bottom Line: PLA/EPO reinforced with xGnP resulted in an increase of up to 26.5% and 60.6% in the tensile strength and elongation at break of the nanocomposites respectively, compared to PLA/EPO blend.However, incorporation of xGnP has no effect on the flexural strength and modulus.Mechanical properties of PLA were greatly improved by the addition of a small amount of graphene nanoplatelets (<1 wt%).

View Article: PubMed Central - PubMed

Affiliation: Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, UPM Serdang, Selangor 43400, Malaysia; E-Mails: mzobir@science.upm.edu.my (M.Z.H.); vsgiita@gmail.com (V.S.G.S.).

ABSTRACT
Graphene nanoplatelet (xGnP) was investigated as a novel reinforcement filler in mechanical properties for poly(lactic acid) (PLA)/epoxidized palm oil (EPO) blend. PLA/EPO/xGnP green nanocomposites were successfully prepared by melt blending method. PLA/EPO reinforced with xGnP resulted in an increase of up to 26.5% and 60.6% in the tensile strength and elongation at break of the nanocomposites respectively, compared to PLA/EPO blend. XRD pattern showed the presence of peak around 26.5° in PLA/EPO nanocomposites which corresponds to characteristic peak of graphene nanoplatelets. However, incorporation of xGnP has no effect on the flexural strength and modulus. Impact strength of PLA/5 wt% EPO improved by 73.6% with the presence of 0.5 wt% xGnP loading. Mechanical properties of PLA were greatly improved by the addition of a small amount of graphene nanoplatelets (<1 wt%).

No MeSH data available.


Elongation at break of PLA/5EPO with various xGnP loadings.
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f8-ijms-13-10920: Elongation at break of PLA/5EPO with various xGnP loadings.

Mentions: Figure 8 shows the elongation at break of PLA/EPO/xGnP composites. PLA/5 wt% EPO blend shows elongation at break value of 114.4 MPa. It increases with the addition of xGnP. The highest elongation at break (183.7%) is observed from PLA/5EPO with 0.3 wt% xGnP loading. Further addition of xGnP causes the decrease of elongation at break which made the blend more brittle. The reason for this may be attributed to a large aspect ratio of the rigid filler and the interaction between xGnP and the matrix, which restricts the movement of the polymer chains [29]. The trend of the elongation at break is the inverse of the tensile modulus.


Graphene nanoplatelets as novel reinforcement filler in poly(lactic acid)/epoxidized palm oil green nanocomposites: mechanical properties.

Chieng BW, Ibrahim NA, Yunus WM, Hussein MZ, Giita Silverajah VS - Int J Mol Sci (2012)

Elongation at break of PLA/5EPO with various xGnP loadings.
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC3472721&req=5

f8-ijms-13-10920: Elongation at break of PLA/5EPO with various xGnP loadings.
Mentions: Figure 8 shows the elongation at break of PLA/EPO/xGnP composites. PLA/5 wt% EPO blend shows elongation at break value of 114.4 MPa. It increases with the addition of xGnP. The highest elongation at break (183.7%) is observed from PLA/5EPO with 0.3 wt% xGnP loading. Further addition of xGnP causes the decrease of elongation at break which made the blend more brittle. The reason for this may be attributed to a large aspect ratio of the rigid filler and the interaction between xGnP and the matrix, which restricts the movement of the polymer chains [29]. The trend of the elongation at break is the inverse of the tensile modulus.

Bottom Line: PLA/EPO reinforced with xGnP resulted in an increase of up to 26.5% and 60.6% in the tensile strength and elongation at break of the nanocomposites respectively, compared to PLA/EPO blend.However, incorporation of xGnP has no effect on the flexural strength and modulus.Mechanical properties of PLA were greatly improved by the addition of a small amount of graphene nanoplatelets (<1 wt%).

View Article: PubMed Central - PubMed

Affiliation: Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, UPM Serdang, Selangor 43400, Malaysia; E-Mails: mzobir@science.upm.edu.my (M.Z.H.); vsgiita@gmail.com (V.S.G.S.).

ABSTRACT
Graphene nanoplatelet (xGnP) was investigated as a novel reinforcement filler in mechanical properties for poly(lactic acid) (PLA)/epoxidized palm oil (EPO) blend. PLA/EPO/xGnP green nanocomposites were successfully prepared by melt blending method. PLA/EPO reinforced with xGnP resulted in an increase of up to 26.5% and 60.6% in the tensile strength and elongation at break of the nanocomposites respectively, compared to PLA/EPO blend. XRD pattern showed the presence of peak around 26.5° in PLA/EPO nanocomposites which corresponds to characteristic peak of graphene nanoplatelets. However, incorporation of xGnP has no effect on the flexural strength and modulus. Impact strength of PLA/5 wt% EPO improved by 73.6% with the presence of 0.5 wt% xGnP loading. Mechanical properties of PLA were greatly improved by the addition of a small amount of graphene nanoplatelets (<1 wt%).

No MeSH data available.