Thermal, Mechanical, and dielectric properties of Injection Molded Graphene Nanocomposites Based on ABS/PC and ABS/PP Blends

Abstract

In this research, graphene nanocomposites of poly(acrylonitrile‐butadiene‐styrene)/polycarbonate (ABS/PC) and ABS/polypropylene (ABS/PP) blends were prepared by melt blending and their thermal and mechanical properties were studied. The incorporation of graphene into ABS/PC and ABS/PP blends caused a significant decrease of their melt flow index values. Although graphene led to reduction of onset degradation temperature (Tonset) and maximum degradation rate temperature (Tpeak) of ABS/PC blends, and mainly of pure PC, the obtained residue from thermogravimetric analysis showed an increase. The thermal degradation of PC phase, in PC‐rich blends, was completed at higher temperatures. In ABS/PP blends, the effect of graphene was an outstanding increase of Tonset and Tpeak in the case of pure PP, while increasing the residue at all proportions. Regarding the Young's modulus, in ABS/PC blends the result of the addition of graphene was dependent on the blend composition. In ABS/PP hybrids, the elastic modulus increased by the incorporation of graphene and this increase, reached anabout 43% in pure PP. The addition of graphene to pure ABS, pure PP and their blend 50/50 w/w resulted in an increasing trend of the dielectric constant (κ′), whereas the loss factor (tanδ) was similar in non‐reinforced and graphene‐reinforced samples, within the entire range of the examined frequencies. POLYM. COMPOS., 40:E1662–E1672, 2019. © 2018 Society of Plastics Engineers

Influence of graphene nanoplates and ABS‐g‐MAH on the thermal, mechanical, and electromagnetic properties of PC/ABS blend

“…7 Yu et al 20 observed a synergistic effect of increasing the thermal conductivity of a PC/ABS commercial polymeric blend with the addition of 0.5 wt% GNP and some commercial additives (α-Al 2 O 3 and MgO particles). Triantou, Stathi & Tarantili 23 studied ABS/PC blend-based GNP nanocomposites with different blend ratios (70/30, 50/50, and 30/70), and verified that the GNP addition promoted different influence on the elastic modulus of the ABS/PC blend for different blend ratios. The same study also investigated the effect of ABS-g-MAH compatibilizer agent (10 wt%) on the ABS/PC blend, and found that the compatibilizer did not promote any positive effect on the ABS/PC compatibility at this content.…”

“…17 The addition of these nanofillers in the blends is made to improve the blend interfacial strength and to refine its morphology, producing high performance and multifunctional nanocomposites. 5,7,[18][19][20][21][22][23][24] Consequently, once PC/ABS blends are largely applied in automotive and electronic applications, 17,24 the use of carbon nanofillers as graphene nanoplates (GNP), 5,7,22,23 GO, 17 multi-walled carbon nanotubes (MWCNT), [18][19][20][21] and carbon black 24 have gained considerable attention of many researchers.…”

“…30 The addition of GNP on PC/ABS blend might improve its mechanical, thermal, and flammability properties. 5,7,22,23 Pour et al 5 evaluated the effect of the addition of GNP (1, 3, and 5 wt%) to the PC/ABS (70/30) blend prepared by melt mixing on a twin-screw extruder. The authors verified an improvement in the mechanical properties and thermal stability of the material with the addition of 3 wt% GNP.…”

“…The same study also investigated the effect of ABS-g-MAH compatibilizer agent (10 wt%) on the ABS/PC blend, and found that the compatibilizer did not promote any positive effect on the ABS/PC compatibility at this content. 23 Park et al 17 evaluated the efficiency of ABS-g-MAH as a compatibilizer agent for PC/ABS/GO nanocomposites produced by extrusion, and concluded that the addition of 5 phr of ABS-g-MAH maximized the impact strength of PC/ABS (70/30) and increased the complex viscosity of the nanocomposite. On the other hand, the GO addition increased the thermal stability of the blend and decreased its impact strength.…”

Influence of addition of selective metallic species on mechanical properties of graphene/acrylonitrile‐butadiene‐styrene composites

“…Among carbon‐based nanomaterials, the remarkable properties of CNTs turned the attention of researchers for its diversified applications and proved to be exciting nanofiller for polymeric composites, energy‐storage devices, sensors, biomedical applications, and so forth. However, the commercial use CNTs in structural applications were limited due to their agglomeration tendency, high cost of production and some unresolved issues regarding the synthesis of high‐quality nanotubes …”