Polymer Interphase Self‐Reinforcement and Strengthening Mechanisms in Low‐Loaded Nanocomposite Fibers

Song, Kenan; Zhang, Yiying; Minus, Marilyn L.

doi:10.1002/macp.201500011

Cited by 29 publications

(20 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The GO reinforced epoxy composites show the obviously enhanced tensile strength due to the fact that the interfacial bonding between CFs and epoxy has been improved by the GO addition. Thus, there will be a better load transfer from the matrix to the CFs, allowing the composite to bear a higher applied load [23]. The enhanced CFeEP interfacial adhesion will be further evidenced later by SEM study.…”

Section: Mechanical Propertiesmentioning

confidence: 95%

Preparation and characterization of functionalized graphene oxide/carbon fiber/epoxy nanocomposites

2015

View full text Add to dashboard Cite

a b s t r a c tGraphene oxide (GO) was functionalized using three different diamines, namely ethylenediamine (EDA), 4,4 0 -diaminodiphenyl sulfone (DDS) and p-phenylenediamine (PPD) to reinforce an epoxy adhesive, with the aim of improving the bonding strength of carbon fiber/epoxy composite. The chemical structure of the functionalized GO (FGO) nanosheets was characterized by elemental analysis, FT-IR and XRD. Hand lay-up, as a simple method, was applied for 3-ply composite fabrication. In the sample preparation, the fiber-to-resin ratio of 40:60 (w:w) and fiber orientations of 0 , 90 , and 0 were used. The GO and FGO nanoparticles were first dispersed in the epoxy resin, and then the GO and FGO reinforced epoxy (GO-or FGO-epoxy) were directly introduced into the carbon fiber layers to improve the mechanical properties. The GO and FGO contents varied in the range of 0.1e0.5 wt%. Results showed that the mechanical properties, in terms of tensile and flexural properties, were mainly dependent on the type of GO functionalization followed by the percentage of modified GO. As a result, both the tensile and flexural strengths are effectively enhanced by the FGOs addition. The tensile and flexural moduli are also increased by the FGO filling in the epoxy resin due to the excellent elastic modulus of FGO. The optimal FGO content for effectively improving the overall composite mechanical performance was found to be 0.3 wt%. Scanning electron microscopy (SEM) revealed that the failure mechanism of carbon fibers pulled out from the epoxy matrix contributed to the enhancement of the mechanical performance of the epoxy. These results show that diamine FGOs can strengthen the interfacial bonding between the carbon fibers and the epoxy adhesive.

show abstract

Section: Mechanical Propertiesmentioning

confidence: 95%

Preparation and characterization of functionalized graphene oxide/carbon fiber/epoxy nanocomposites

2015

View full text Add to dashboard Cite

show abstract

“…Polymer/nanoparticle composites manufactured by incorporating nanoparticles (NPs) within a polymer matrix can have significantly enhanced electrical, optical, and mechanical properties superior to those of the pure poly mer materials. [1][2][3][4][5][6][7][8][9][10] The NPs embedded in a polymer matrix usually can have large surface-to-volume ratio and, of the matrix polymer chains depending on the properties investigated. Segmental mobility of matrix chains in glass state is also found significantly slowed down in the polymer/NP interfacial layer, due to strong attractive interactions between polymers and the NP.…”

Section: Introductionmentioning

confidence: 99%

Temperature Effect on Interfacial Structure and Dynamics Properties in Polymer/Single-Chain Nanoparticle Composite

Jia

Shi

Jiao

et al. 2017

Macromol. Chem. Phys.

View full text Add to dashboard Cite

Interface structure and dynamics properties in an all‐polystyrene composite composed of linear chains and one single‐chain nanoparticle (SCNP) are investigated by using large‐scale molecular dynamics simulations at both coarse‐grained and full atomistic level. It is demonstrated that the SCNP adopts a crumpled globular state in composite; it has layered internal structures especially at low temperatures. When temperature decreases, its interior phenyl rings (iPRs) are parallel to each other and scaffold cross‐linking bonds undergo a “loose‐to‐tight” transition, leading to a “soft‐to‐hard” transition of the SCNP. Such transition provides more interior free volume and therefore results in faster rotational relaxation of inner layer iPRs at low temperature. It also facilitates the infiltration of the matrix monomers, resulting in an enhanced interfacial correlation and therefore a stronger deceleration effect in diffusion of matrix monomers at low temperatures. These results provide new insights into unique structure and dynamics properties at the polymer/SCNP interface region.

show abstract

“…In other words, the number of lamellae stacks per unit volume, on the other hand, increases from PVA to PVA/BC nanocomposites, as suggested in Figure 3F, thus resulting in the improvement of tensile strengths of nanocomposites. This phenomenon could be interpreted by the Hall-Petch relation (Hall, 1951;Song et al, 2015), in which yield stress and tensile stress are dependent on the grain size. As a consequence, according to our previous work (Mousa and Dong, 2018b), much higher tensile strength of PVA/BC nanocomposites at 147.94 MPa could be achieved as opposed to that of PVA at 70.32 MPa with the inclusion of 3 wt% BCs.…”

Section: Resultsmentioning

confidence: 99%

Elastic Behavior of Nanophases in Polyvinyl Alcohol (PVA)/Bamboo Charcoal (BC) Nanocomposite Films

Mousa

Dong

2018

Front. Mater.

View full text Add to dashboard Cite

Polyvinyl alcohol (PVA) nanocomposite films reinforced with bamboo charcoal (BC) nanoparticles were successfully fabricated via solution casting and their nanomechanical properties in terms of material phases were determined by a peak force quantitative nanomechanical tapping mode (PFQNM). Our experimental results revealed that the elastic modulus of PVA semicrystalline phase in stack-bundle form was 24 ± 4.2 GPa with the semicrystalline phase width being 20-76 nm, as opposed to 11.4 ± 3.1 GPa and 18-65 nm for corresponding PVA amorphous phase accordingly. The incorporation of BC nanoparticles enhanced the elastic moduli of both crystalline and amorphous phases of PVA by ∼51% and ∼100%, respectively. Moreover, the phase width was decreased to be in range of 5-53 nm for crystalline phase and 4-35 nm for amorphous phase.

show abstract

Polymer Interphase Self‐Reinforcement and Strengthening Mechanisms in Low‐Loaded Nanocomposite Fibers

Cited by 29 publications

References 37 publications

Preparation and characterization of functionalized graphene oxide/carbon fiber/epoxy nanocomposites

Preparation and characterization of functionalized graphene oxide/carbon fiber/epoxy nanocomposites

Temperature Effect on Interfacial Structure and Dynamics Properties in Polymer/Single-Chain Nanoparticle Composite

Elastic Behavior of Nanophases in Polyvinyl Alcohol (PVA)/Bamboo Charcoal (BC) Nanocomposite Films

Contact Info

Product

Resources

About