Development of a model for modulus of polymer halloysite nanotube nanocomposites by the interphase zones around dispersed and networked nanotubes

Zare, Yasser; Rhee, Kyong Yop

doi:10.1038/s41598-022-06465-4

Cited by 19 publications

(9 citation statements)

References 70 publications

(67 reference statements)

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“…The interphase pieces can also connect to the nets, since they cover the nanoparticles 30 , 31 . This attractive subject have been studied for rigidity of nanocomposites 32 , 33 . Nevertheless, the impress of interphase on the conductivity was improperly studied.…”

Section: Introductionmentioning

confidence: 99%

Simulating of effective conductivity for graphene–polymer nanocomposites

Vatani

Zare

Gharib

et al. 2023

Sci Rep

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The efficient conductivity of graphene-polymer systems is expressed supposing graphene, tunneling and interphase components. The volume shares and inherent resistances of the mentioned components are used to define the efficient conductivity. Besides, the percolation start and the share of graphene and interphase pieces in the nets are formulated by simple equations. Also, the resistances of tunneling and interphase parts are correlated to graphene conductivity and their specifications. Suitable arrangements among experimented data and model’s estimates as well as the proper trends between efficient conductivity and model’s parameters validate the correctness of the novel model. The calculations disclose that the efficient conductivity improves by low percolation level, dense interphase, short tunnel, large tunneling pieces and poor polymer tunnel resistivity. Furthermore, only the tunneling resistance can govern the electron transportation between nanosheets and efficient conductivity, while the big amounts of graphene and interphase conductivity cannot play a role in the efficient conductivity.

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Section: Introductionmentioning

confidence: 99%

Simulating of effective conductivity for graphene–polymer nanocomposites

Vatani

Zare

Gharib

et al. 2023

Sci Rep

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“…However, the literature studies pointed out that the 2-phase (matrix-reinforcement) composite approach is not enough to explain drastic improvements in mechanical properties. 28,[31][32][33][34][35] The benefit of nanoclays over conventional reinforcements is that small clay fractions could lead to drastic improvements in strength and modulus, while this trend would reverse in higher volume fractions. 3 This phenomenon results from the fact that the thickness of the interface is higher in small-volume exfoliated clays than in higher clay volumes.…”

Section: Introductionmentioning

confidence: 99%

Biocompatible organic coating fabrication via polymer/clay nanocomposites: Evaluation of mechanical improvements

Kandemir,

Donmez,

Can

2023

Polymer Composites

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This study focuses on achieving mechanical enhancements in biocompatible organic coatings. A solvent‐based method is employed to produce biocompatible nanocomposites using polyvinylpyrrolidone (PVP) and bentonite nanoclays (BNT) as constituents to achieve this objective. Subsequently, the nanocomposites are spin‐coated onto a glass substrate, resulting in smooth and defect‐free films with a thickness of 5 μm. Through instrumented‐indentation testing, it is observed that BNT reinforcement leads to significant improvements in mechanical properties. Specifically, the addition of 0.5, 1, and 5 wt% of BNT in PVP results in enhancements of 105%, 77%, and 430% in elastic modulus, respectively, while hardness is improved by 166%, 211%, and 448%, respectively. The considerable improvements in the composite modulus cannot be adequately explained by assuming perfect adhesion between the constituents of the composite (as suggested by the Halpin–Tsai model) or by considering the contributions from the interface/network of silicate layers (as proposed by the Modified Halpin–Tsai model). Instead, the significant enhancements in hardness and modulus values are primarily attributed to a notable increase in the BNT volume fraction, ranging from 4 to 9 times, occurring under the Berkovich tip due to the aggregated silicate layers. The findings highlight the role of aggregated silicate layers in enhancing both hardness and modulus and contribute to the development of advanced biocompatible coatings with improved mechanical properties.Highlights Enhanced mechanical properties in biocompatible coatings. Biocompatible nanocomposites of polyvinylpyrrolidone (PVP) and bentonite nanoclays (BNT). Spin‐coated nanocomposite films on glass: smooth, defect‐free, 5 μm thick. BNT reinforcement boosts elastic modulus and hardness of PVP. Aggregated silicate layers under compression drive substantial mechanical improvements.

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“…Recently, our group published some papers on the modulus of polymer nanocomposites containing CNTs and HNTs [53,54]. We developed the Ouali model by consid- Recently, ceramic nanoparticles have attracted much interest in the academic research community [23][24][25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, our group published some papers on the modulus of polymer nanocomposites containing CNTs and HNTs [53,54]. We developed the Ouali model by considering the interphases around the dispersed and networked nanoparticles for the modulus of CNT-reinforced samples [53].…”

Section: Introductionmentioning

confidence: 99%

“…We developed the Ouali model by considering the interphases around the dispersed and networked nanoparticles for the modulus of CNT-reinforced samples [53]. Moreover, we enhanced the advanced Takayanagi equation for calculating the modulus of HNT-based nanocomposites by considering the interphase around the dispersed and networked HNTs after percolation [54]. However, an Ouali model for the modulus of HNT-filled samples after percolation onset has not been developed yet.…”

Section: Introductionmentioning

confidence: 99%

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Tensile Modulus of Polymer Halloysite Nanotube Systems Containing Filler–Interphase Networks for Biomedical Requests

2022

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To date, there have been a limited number of studies modeling the tensile modulus in the polymer halloysite nanotube (HNT) systems before or after percolation onset. In this paper, an equation for a composite’s modulus post-percolation onset was developed for HNT-filled samples including the interphase and HNT network. The dispersed nanoparticles and adjoining interphase part were neglected, because they caused ineffective influences on the stiffness of the system after percolation onset. The developed model reflects the impacts of HNTs’ size, interphase depth, percolation onset and the volume shares and moduli of the HNT network and its adjacent interphase on the modulus of HNT-based systems. The impacts of issues on the nanocomposite modulus are defendable, confirming the effectiveness of the developed model. HNT length, interphase depth, HNT concentration, net modulus and net portion directly influenced the stiffness, while the HNT radius and percolation onset had inverse effects. Results show that there was a 142% improvement in the modulus of samples at an interphase depth of 40 nm. Moreover, the stiffness improved by 60% at a net modulus of 200 GPa, but it later exhibited a 180% enhancement at a net modulus of 1000 GPa. In addition, the experimental data for the modulus of numerous composites display fine agreement to the predictions, confirming the validity of the developed model.

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Development of a model for modulus of polymer halloysite nanotube nanocomposites by the interphase zones around dispersed and networked nanotubes

Cited by 19 publications

References 70 publications

Simulating of effective conductivity for graphene–polymer nanocomposites

Simulating of effective conductivity for graphene–polymer nanocomposites

Biocompatible organic coating fabrication via polymer/clay nanocomposites: Evaluation of mechanical improvements

Tensile Modulus of Polymer Halloysite Nanotube Systems Containing Filler–Interphase Networks for Biomedical Requests

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