Creep performance of CNT polymer nanocomposites -An emphasis on viscoelastic interphase and CNT agglomeration

Hassanzadeh-Aghdam, Mohammad Kazem; Mahmoodi, Mohammad Javad; Ansari, R.

doi:10.1016/j.compositesb.2018.12.093

Cited by 153 publications

(56 citation statements)

References 39 publications

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“…As detected in Figure 6, the uppermost strength was seen at the least "R" and the highest "t". A great level of "t" displays the robust interfacial interaction/adhesion [18,43]. Moreover, a thick interphase easily produced a large net at low concentration of nanofiller.…”

Section: Resultsmentioning

confidence: 99%

“…Additionally, the nanoscale diameter and large aspect ratio of CNT significantly improve the general properties of polymer CNT nanocomposites (PCNT) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. The van der Waals attraction between nanotubes leads the aggregation/agglomeration in the nanocomposites, which reduces the filler surface expanse and interrupts the networking level [18][19][20]. Additionally, the interfacial communication/bond/area between the polymer medium and particles should be acceptable for an effective load transfer from the polymer matrix to CNT.…”

Section: Introductionmentioning

confidence: 99%

“…The interphase is hardly considered by experimental measurements, owing to the minor extent and multifaceted style. Additionally, most available models on the mechanics cannot suppose the interphase effects [18,32,33]. Therefore, several new and developed models were suggested to study the interphase character in the mechanical behavior [34][35][36].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of the Connecting Effectiveness of the Interphase Zone on the Tensile Properties of Carbon Nanotubes (CNT) Reinforced Nanocomposite

Zare

Rhee

2020

Polymers

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The establishment of interphase region around nanoparticles accelerates the percolating of carbon nanotubes (CNT) in polymer nanocomposites reinforced with CNT (PCNT), due to the linking productivity of interphase district before the physical connecting of nanoparticles. Therefore, the interphase is an important character in the networks of CNT in PCNT. Here, a simulation study is presented to investigate the interphase connection in the mechanical possessions of PCNT including tensile modulus and strength. A number of models comprising Takayanagi, Ouali, Pukanszky and Callister are developed by the assumption of an interphase district in the CNT excluded volume. The advanced models depict the optimistic influences of reedy and lengthy CNT besides dense interphase on the stiffness and tensile power of nanocomposites. The Pukanszky calculations depict that the interphase strength plays a more noteworthy role in the nanocomposites strength compared to the CNT length.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of the Connecting Effectiveness of the Interphase Zone on the Tensile Properties of Carbon Nanotubes (CNT) Reinforced Nanocomposite

Zare

Rhee

2020

Polymers

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“…The largest and the shortest "L c " are observed in epoxy/MWCNT and UWPE/MWCNT samples, respectively. The calculations of "K" and "t" are used in Equation (28) to predict the conductivity in the reported samples. Figure 6 illustrates the experimental and theoretical levels of conductivity for the reported samples.…”

Section: Comparison Between Experimental Results Of Conductivity Anmentioning

confidence: 99%

“…PCNTs commonly include the interfacial/interphase regions between polymer matrix and nanoparticles. Actually, the significant interfacial area of nanoparticles per weight and the strong interaction between polymer matrix and nanofiller intensify the importance of interfacial/interphase regions in nanocomposites . In fact, the interfacial interaction/adhesion handles the performance of nanocomposites, because the unusual properties of nanoparticles should be shifted to polymer matrix through interfacial regions.…”

Section: Introductionmentioning

confidence: 99%

Effect of conductivity transportation from carbon nanotubes (CNT) to polymer matrix surrounding CNT on the electrical conductivity of nanocomposites

2019

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In this article, the interphase thickness in polymer carbon nanotubes (CNTs) nanocomposites (PCNT) is correlated to CNT radius and the extent of conductivity transportation from CNT to polymer matrix surrounding the CNT (K). In addition, CNT properties and “K” are applied to suggest the simple equations for percolation threshold and the fraction of networked CNT. A simple model is developed to predict the conductivity of PCNT assuming CNT size, “K” and tunneling resistance. The impacts of different parameters on the interphase thickness, percolation threshold, the fraction of networked CNT, and the conductivity of nanocomposites are studied and many experimental results are used to confirm the predictions. Thin and large CNT as well as high “K” cause low percolation threshold, large conductive networks and desirable conductivity in nanocomposites. Moreover, high tunneling resistivity and large tunneling distance negatively affect the conductivity, but the exceptional CNT conductivity is ineffective. The reasonable roles of all parameters in the predicted conductivity and the fine agreement between predictions and experimental results confirm the developed model.

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Effects of molecular weight and molecular weight distribution on creep properties of polypropylene homopolymer

Kurt

Kaşgöz

2021

J of Applied Polymer Sci

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The molecular weights of the industrial‐grade isotactic polypropylene (i‐PP) homopolymers samples were determined by the melt‐state rheological method and effects of molecular weight and molecular weight distribution on solid and melt state creep properties were investigated in detail. The melt‐state creep test results showed that the creep resistance of the samples increased by Mw due to the increased chain entanglements, while variations in the polydispersity index (PDI) values did not cause a considerable change in the creep strain values. Moreover, the solid‐state creep test results showed that creep strain values increased by Mw and PDI due to the decreasing amount of crystalline structure in the polymer. The results also showed that the amount of crystalline segment was more effective than chain entanglements that were caused by long polymer chains on the creep resistance of the polymers. Modeling the solid‐state viscoelastic structure of the samples by the Burger model revealed that the weight of the viscous strain in the total creep strain increased with Mw and PDI, which meant that the differences in the creep strain values of the samples would be more pronounced at extended periods of time.

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Creep performance of CNT polymer nanocomposites -An emphasis on viscoelastic interphase and CNT agglomeration

Cited by 153 publications

References 39 publications

Analysis of the Connecting Effectiveness of the Interphase Zone on the Tensile Properties of Carbon Nanotubes (CNT) Reinforced Nanocomposite

Analysis of the Connecting Effectiveness of the Interphase Zone on the Tensile Properties of Carbon Nanotubes (CNT) Reinforced Nanocomposite

Effect of conductivity transportation from carbon nanotubes (CNT) to polymer matrix surrounding CNT on the electrical conductivity of nanocomposites

Effects of molecular weight and molecular weight distribution on creep properties of polypropylene homopolymer

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