Mechanical properties of thermoplastic natural rubber reinforced with multi-walled carbon nanotubes

Abstract

This study investigated the mechanical properties of thermoplastic natural rubber (TPNR) nanocomposites reinforced by multi-walled carbon nanotubes (MWNTs). The TPNR nanocomposites were prepared using melt blending method from polypropylene, natural rubber, and liquid natural rubber as a compatibilizer, respectively, with 1—7 wt% of MWNTs. The tensile strength and Young’s modulus increased by almost 39% and 30%, respectively, at 3 wt% of MWNTs. The elongation at break decreased with increase in the percentage of MWNTs. The maximum impact strength was recorded at 5 wt% of MWNTs which was increased by 74% as compared with a pristine TPNR sample. The effect of MWNTs was also confirmed by DMA; it showed that the storage modulus E′, loss modulus E′′, and glass transition temperature (Tg) also increased for all MWNT reinforced samples. SEM micrographs confirm the effect of good dispersion of MWNTs and their interfacial bonding in TPNR.

Study on the microstructure evolution of TiO2‐reinforced HDPE nanocomposites by synchrotron small angle X‐ray scattering

“…The increase of TiO 2 content resulted in enhancement in tensile strength; and the enhancement becomes steady after reaching 2 wt% content. Generally, elongation at break decreases with increasing the filler content, as described in most of the research works of polymer nanocomposites . However, in our case, the elongation at break and toughness do not decrease continuously, and they decreased gradually before 1 wt% content of TiO 2 .…”

Nanocarbon Reinforced Rubber Nanocomposites: Detailed Insights about Mechanical, Dynamical Mechanical Properties, Payne, and Mullin Effects

“…In view of this, these carbon containing fillers has been receiving considerable amount of attention as filers in rubber nanocomposites due to their superior properties. When considering all these aspects, the present article reviews mechanical properties, dynamical mechanical properties, Payne, and Mullin effects of NR, SBR, NBR, EPDM, and EVA rubbers filled with graphitic fillers anticipating their superior applications in multifaceted fields [ 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 …”

Characterization and Morphology of Modified Multi-Walled Carbon Nanotubes Filled Thermoplastic Natural Rubber (TPNR) Composite

“…The reinforcing effect of MWCNTs was also confirmed by DMA where the addition of nanotubes has increased the storage modulus, the loss modulus, and also the glass transition temperature (Tg). Homogeneous dispersion of MWCNTs throughout the TPNR matrix and strong interfacial adhesion between MWCNTs and matrix as confirmed by SEM images are proposed to be responsible for the significant mechanical enhancement [29].…”