Surface modification of MWCNT to improve the mechanical and thermal properties of natural rubber nanocomposites,The Canadian Journal of Chemical Engineering

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Surface modification of MWCNT to improve the mechanical and thermal properties of natural rubber nanocomposites
The Canadian Journal of Chemical Engineering ( IF 1.6 ) Pub Date : 2022-07-20 , DOI: 10.1002/cjce.24566
Farnaz Shahamatifard _{1,

2} , Denis Rodrigue _{1,

2} , Keun‐Wan Park ₃ , Slim Frikha ₃ , Frej Mighri _{1,

2}

Affiliation

In this study, we focused on the synergistic effect between carbon black (CB) and multiwall carbon nanotube (MWCNT) hybrid fillers. In particular, the surface modification of pristine MWCNT (P-MWCNT) via an acid (oxidation) treatment was used to improve their dispersion, as well as the mechanical and thermal properties of their corresponding natural rubber (NR)-based nanocomposites. Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) were carried out to determine the presence of functional groups on the oxidized MWCNT (O-MWCNT). After vulcanization, dynamic mechanical analysis (DMA), tensile properties, hardness, thermal conductivity, swelling behaviour in toluene and SEM characterizations were performed on both NR/CB/P-MWCNT- and NR/CB/O-MWCNT-based nanocomposites. The results showed the positive effect of MWCNT surface oxidation on the fillers' dispersion and nanocomposites' properties.

中文翻译：

MWCNT 的表面改性以改善天然橡胶纳米复合材料的机械和热性能

在这项研究中，我们重点研究了炭黑 (CB) 和多壁碳纳米管 (MWCNT) 混合填料之间的协同效应。特别是，通过酸（氧化）处理对原始 MWCNT (P-MWCNT) 进行表面改性，以改善其分散性，以及相应的基于天然橡胶 (NR) 的纳米复合材料的机械和热性能。进行傅里叶变换红外光谱 (FTIR)、X 射线光电子能谱 (XPS) 和扫描电子显微镜 (SEM) 以确定氧化的多壁碳纳米管 (O-MWCNT) 上是否存在官能团。硫化后，对基于 NR/CB/P-MWCNT 和 NR/CB/O-MWCNT 的纳米复合材料进行了动态机械分析 (DMA)、拉伸性能、硬度、导热性、甲苯溶胀行为和 SEM 表征。

更新日期：2022-07-20

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