Modeling the interphase region in carbon nanotube‐reinforced polymer nanocomposites

Abstract

Carbon nanotubes are regarded as ideal fillers for polymeric materials due to their excellent mechanical properties. Mechanical analysis without consideration of nanotube–matrix interphase, may not give precise predictions. In this work, the impacts of interphase on the behavior of polymer‐based nanocomposites are studied. For this purpose, a closed‐form micromechanical interphase model considering the diameter of nanotube, the thickness of interphase, and mechanical properties of nanotube and polymer is proposed to estimate the overall mechanical properties of nanotube‐reinforced polymer nanocomposites. Furthermore, the effective elastic constants of the nanocomposites for a wide range of diameters and volume fractions of nanotubes, evaluated via the suggested interphase model, are compared with the results of molecular dynamics simulations. Thereafter, the effects of diameter, length and volume fraction of nanotubes on the mechanical properties of nanocomposites are investigated using the suggested model. The results indicate that mechanical properties of nanocomposites are significantly influenced by the interphase. POLYM. COMPOS., 40:E1219–E1234, 2019. © 2018 Society of Plastics Engineers

Simulation of tunneling distance and electrical conductivity for polymer carbon nanotubes nanocomposites by interphase thickness and network density

“…The interphase regions commonly appear in polymer nanocomposites, due to the exceptional surface area of nanoparticles per weight and strong interfacial interaction between polymer matrix and nanofiller . The direct dependence of mechanical properties of polymer nanocomposites to the interphase thickness and modulus was discussed in the previous reports .…”

Effects of critical interfacial shear strength between a polymer matrix and carbon nanotubes on the interphase strength and Pukanszky's “B” interphase parameter

“…These are many modeling work in the literature investigating the interphase characteristics and their roles in the performance of nanocomposites. 46,47 The modeling techniques are interesting, because the investigational handling of interphase region is very tough due to the nanoscale manipulation, while the models give much information by simple approaches.…”

“…Many investigators have studied the interphase features in the mechanical presentations of polymer nanocomposites, 47,48 but they ignored the least level of interfacial shear strength (s c ), which reinforces the nanocomposites. Actually, the former reports have studied the characteristics and roles of interphase area in the nanocomposites, but they neglected the least interphase terms strengthening the polymer media.…”

Simple model for hydrolytic degradation of poly(lactic acid)/poly(ethylene oxide)/carbon nanotubes nanobiosensor in neutral phosphate‐buffered saline solution

“…Also, it was mentioned that the interphase regions around nanoparticles decrease the percolation threshold because the interphase zones can join the CNT networks (Shin, Yang, Choi, Chang, & Cho, 2015;Zare & Rhee, 2018b, 2019b, 2019c. Interphase regions form between polymer matrix and nanoparticles in nanocomposites due to the large surface area of well-dispersed nanoparticles (Amraei, Jam, Arab, & Firouz-Abadi, 2018;Ma, Zare, & Rhee, 2017;Zare, Fasihi, & Rhee, 2017;Zare & Rhee, 2017b, 2017c. The main part of a biosensor is the transduction device altering the responses of biological interactions to an electrical signal (Malik et al, 2013;Naghib, Rahmanian, Keivan, Asiaei, & Vahidi, 2016).…”