Enhanced Mechanical Properties of Multi-layer Graphene Filled Poly(vinyl chloride) Composite Films

doi:10.1016/j.jmst.2014.09.009

Abstract

Abstract: In order to improve mechanical properties of soft poly(vinyl chloride) (PVC) films, we used commercial multi-layer graphene (MLG) with large size and high structural integrity as reinforcing fillers, and prepared MLG/PVC composite films by using conventional melt-mixing methods. Microstructures, static and dynamic mechanical properties of the MLG/PVC composite films were investigated. The results showed that a small amount of MLG loading could greatly increase the mechanical properties of the MLG/PVC composites. The tensile modulus of the 0.96 wt% MLG/PVC composites was up to 40 MPa, increasing by 31.3% in comparison to the neat PVC. Such a significant mechanical reinforcement was mainly attributed to uniform dispersion of the large-size MLG, good compatibility and strong interactions among MLG and plasticizers and PVC.

Key words: Multi-layer graphene, Poly(vinyl chloride), Composites, Mechanical properties, Film

Han Wang, Guiyuan Xie, Zhe Ying, Yu Tong, You Zeng. Enhanced Mechanical Properties of Multi-layer Graphene Filled Poly(vinyl chloride) Composite Films[J]. J. Mater. Sci. Technol., 2015, 31(4): 340-344.

Figures/Tables 4

Microstructure and morphology of the MLG and MLG/PVC composites. SEM images of the MLG (a, b), TEM image of MLG (c), SEM images of neat PVC (d), 0.96 wt% (e), and 1.28 wt% (f) MLG/PVC composites.

Tensile properties of the MLG/PVC composite films as a function of MLG loadings: (a) stress-strain curves, (b) tensile modulus.

Structural schematic of MLG/PVC composites: (a) neat PVC, (b) soft PVC containing DOP plasticizer, (c) MLG/DOP/PVC composites.

Dynamic mechanical behavior of the MLG/PVC composite films: (a) storage modulus, (b) loss modulus, (c) tanδ

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