Improved mechanical properties through engineering the interface by poly (ether ether ketone) grafted graphene oxide in epoxy based nanocomposites

Improving the thermal conductivity and mechanical property of epoxy composites by introducing polyhedral oligomeric silsesquioxane‐grafted graphene oxide

“…6c, mark area) with irregular edge. That is due to HMD and POSS grafted to GO and the interactions between the functionalized graphene sheets which further confirmed the previous test results from the microscopic morphology [23].…”

“…When weight loading of the introduced GO and POSS-GO was 1.0 phr, the storage modulus of composites was improved by 33.74% (3,266 MPa) and 21.91% (2,977 MPa) as compared with neat epoxy (2,442 MPa), respectively. The improvement of storage modulus is attributed to the stiffening effect of GO and can produce rigid induction in EP matrix [23,27]. When compared with GO/EP, POSS-GO/ EP provided lower storage modulus with the same weight loading which is due to that the incorporation of flexible POSS molecular decreased stiffness of GO thus slightly reduced the strength of the composite than GO/EP.…”

HDPE/UHMWPE hybrid nanocomposites with surface functionalized graphene oxide towards improved strength and cytocompatibility

“…The successful conjugation of PEI and mPE on the GO nanosheets was analysed using XRD and FTIR studies. The characteristic XRD peak (figure 1d) of GO was exhibited at 2u ¼ 10.88 [45,46]. The characteristic X-ray peak for the amine functionalized GO-PEI and mPE functionalized GO is shifted to the left at 2u ¼ 10.18 and 2u ¼ 9.948, respectively.…”

Synergistic effect of functionalized graphene oxide and carbon nanotube hybrids on mechanical properties of epoxy composites

“…In the spectrum of GO, the peaks at 3354 cm À1 , 1715 cm À1 , 1625 cm À1 , 1229 cm À1 and 1049 cm À1 are attributed to O-H stretching vibrations, C]O stretching vibration, C]C stretching vibration and C-O stretching vibrations, respectively, which is consistent with the previous reports. 34,35 Aer functionalization, the spectrum of EGO shows new peaks at 2967 cm À1 , 2872 cm À1 and 1506 cm À1 , corresponding to the symmetric and asymmetric stretching vibration of methylene and stretching vibration of benzene ring in the epoxy resin. In addition, it is observed that the C]O stretching vibration peak shied from 1715 cm À1 (the C]O stretching vibration peak of carboxylic acid on GO) to 1732 cm À1 (the C]O stretching vibration peak of ester carbonyl on EGO), which proves the esterication reaction between epoxy groups in the epoxy resin and carboxylic acid groups on GO.…”

“…According to the above tensile and fracture properties of epoxy composites, we compare the data of elastic modulus (E), tensile strength (s), fracture toughness (K IC ) and critical energy release rate (G IC ) of epoxy-based composites and the relative increasement aer adding different carbon nanollers, as shown in Table 1. 16,29,34,43,48,[55][56][57][58][59][60] All epoxy-based composites have a low ller content (0.24-1 wt%). Compared with other epoxybased composites reported in literatures, the EGO/EP and EGO-CNT/EP in this work have good balance among elastic modulus (E), tensile strength (s), fracture toughness (K IC ) and critical energy release rate (G IC ).…”