Well-dispersed poly(ether-ether-ketone)/multi-walled carbon nanotube nanocomposites prepared via a simple solution mixing approach,Polymer International

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Well-dispersed poly(ether-ether-ketone)/multi-walled carbon nanotube nanocomposites prepared via a simple solution mixing approach
Polymer International ( IF 2.9 ) Pub Date : 2021-03-27 , DOI: 10.1002/pi.6227
Zhiyuan Jiang ₁ , Qihui Chen ₁ , Zewen Zhu ₁ , Chia‐Ying Tsai ₁ , Mingzhen Zhao ₁ , Hung‐Jue Sue ₁ , Andy Chang ₂ , Tim Bremner ₃ , Lorenzo P. DiSano ₄

Affiliation

Incorporation of reinforcing nanoparticles, like multi-walled carbon nanotubes (MWCNTs), in a polymer matrix is an effective way to enhance mechanical properties and expand structural applications of engineering polymers such as poly(ether-ether-ketone) (PEEK). Good dispersion of MWCNTs is critical for achieving optimal properties. In this work, a simple solution mixing approach was utilized to prepare PEEK nanocomposites reinforced with MWCNTs. By direct mixing of PEEK/dichloroacetic acid solution and MWCNT/N-methyl-2-pyrrolidone solution, PEEK nanocomposites with individually dispersed MWCNTs were prepared. A PEEK wrapping of MWCNT mechanism is proposed to explain why this simple solution mixing approach resulted in such a good dispersion. Thermal stability of PEEK is not affected but crystallization is impeded due to the confinement effect of well-dispersed MWCNTs. Young's modulus is increased by ca 20% while coefficient of thermal expansion above the glass transition temperature is decreased by ca 30% with only 1.5 wt% MWCNT loading in PEEK, which is critical for a variety of high-temperature applications. © 2021 Society of Industrial Chemistry.

中文翻译：

通过简单的溶液混合方法制备分散良好的聚（醚-醚-酮）/多壁碳纳米管纳米复合材料

在聚合物基体中加入增强纳米粒子，如多壁碳纳米管 (MWCNT)，是增强机械性能和扩大工程聚合物（如聚醚醚酮）（PEEK）的结构应用的有效方法。MWCNT 的良好分散对于实现最佳性能至关重要。在这项工作中，一种简单的溶液混合方法被用来制备用多壁碳纳米管增强的 PEEK 纳米复合材料。通过直接混合 PEEK/二氯乙酸溶液和 MWCNT/ N-甲基-2-吡咯烷酮溶液，制备具有单独分散的MWCNT的PEEK纳米复合材料。提出了 MWCNT 机制的 PEEK 包裹来解释为什么这种简单的溶液混合方法会导致如此良好的分散。PEEK 的热稳定性不受影响，但由于分散良好的 MWCNTs 的限制效应而阻碍了结晶。杨氏模量增加了大约20%，而高于玻璃化转变温度的热膨胀系数降低了大约30%，而 PEEK 中的 MWCNT 负载仅为 1.5%，这对于各种高温应用至关重要。© 2021 工业化学学会。

更新日期：2021-03-27

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