The mechanical, thermal and morphological properties of graphene nanoplatelets filled poly(lactic acid)/epoxidized palm oil blends / Buong Woei Chieng ... [et al.]

Buong, Woei Chieng and Ibrahim, Nor Azowa and Wan Yunus, Wan Md Zin and Hussein, Mohd Zobir (2014) The mechanical, thermal and morphological properties of graphene nanoplatelets filled poly(lactic acid)/epoxidized palm oil blends / Buong Woei Chieng ... [et al.]. Scientific Research Journal, 11 (2). pp. 1-13. ISSN 1675-7009

Abstract

Poly(lactic acid) (PLA)-based nanocomposites filled with graphene nanoplatelets (xGnP) that contains epoxidized palm oil (EPO) as plasticizer were prepared by melt blending method. PLA was first plasticized by EPO to improve its flexibility and thereby overcome its problem of brittleness. Then, xGnP was incoporated into plasticized PLA to enhance its mechanical properties. Plasticized and nanofilled PLA nanocomposites (PLA/EPO/xGnP) showed improvement in the elongation at break by 3322% and 61% compared to pristine PLA and PLA/EPO, respectively. The use of EPO and xGnP increases the mobility of the polymeric chains, thereby improving the flexibility and plastic deformation of PLA. The nanocomposites also resulted in an increase of up to 26.5% in the tensile strength compared with PLA/EPO blend. XRD pattern showed the presence of peak around 26.5° in PLA/EPO/xGnP nanocomposites which corresponds to characteristic peak of graphene nanoplatelets. Plasticized PLA reinforced with xGnP showed that increasing the xGnP content triggers a substantial increase in thermal stability. Crystallinity of the nanocomposites as well as cold crystallization and melting temperature did not show any significant changes upon addition of xGnP. However, there was a significant decrease of glass transition temperature up to 0.3wt% of xGnP incorporation. The TEM micrograph of PLA/EPO/xGnP shows that the xGnP was uniformly dispersed in the PLA matrix and no obvious aggregation was observed.

Metadata

Item Type: Article
Creators:
CreatorsID Num. / Email
Buong, Woei ChiengUNSPECIFIED
Ibrahim, Nor AzowaUNSPECIFIED
Wan Yunus, Wan Md ZinUNSPECIFIED
Hussein, Mohd ZobirUNSPECIFIED
Subjects: Q Science > QD Chemistry > Inorganic chemistry > Carbon disulfide. Graphene. Carbon
T Technology > TP Chemical technology > Polylactic acid
T Technology > TP Chemical technology > Plasticizers
Divisions: Universiti Teknologi MARA, Shah Alam > Research Management Centre (RMC)
Journal or Publication Title: Scientific Research Journal
Journal: UiTM Journal > Scientific Research Journal
ISSN: 1675-7009
Volume: 11
Number: 2
Page Range: pp. 1-13
Item ID: 12426
Uncontrolled Keywords: graphene nanoplatelets, plasticizers, poly(lactic acid)
URI: http://ir.uitm.edu.my/id/eprint/12426

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