1,4-cineole: a bio-derived solvent for highly stable graphene nanoplatelet suspensions and well-dispersed UHMWPE nanocomposite fibers

IF 23.2 2区 材料科学 Q1 MATERIALS SCIENCE, COMPOSITES
Kenneth R. Brown, ZhiJing Xue, Ryan Cordier, Cole Love-Baker, Erin R. Crater, Andriy Sushchenko, Eli Knight, Alexander Scherschel, Morgan Price, Robert B. Moore, Xiaodong Li
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Abstract

The exceptional properties of carbon nanoparticles, such as graphene, promise to expand the performance and functionality of many materials. The reinforcement of polymers is of keen interest due to their low density and flexible manufacturing methods. However, dispersing graphene in them has proven to be an enduring challenge due to the particles’ propensity to form performance-degrading agglomerations. Furthermore, effective solvents for nanoparticle dispersion are commonly harmful, non-renewable, petrochemicals. In this work, a bio-derived solvent, 1,4-cineole, is demonstrated as a renewable alternative to these solvents that can be used to form highly stable graphene nanoplatelet (GnP) suspensions and used to gel spin well-dispersed UHMWPE/GnP nanocomposite fibers. The GnP concentration in the fibers was varied across three orders of magnitude, 0.01 to 1 wt%, to examine its effect on fiber microstructure and properties. At low concentrations, the particles act as point defects without affecting the fiber microstructure, and poor particle/matrix interfacial adhesion results in significantly reduced mechanical properties. At 1 wt% GnPs, a network effect takes hold thereby reinforcing the fibers, but the particles also impede the growth and orientation of crucial load-carrying crystalline structures in the fiber. Unveiling the microstructural effects of GnPs on highly oriented and crystalline polymers in this study provides crucial insights for future work developing high-performance polymer nanocomposite fibers.

1,4-松油:一种生物衍生溶剂,可用于制造高度稳定的石墨烯纳米板悬浮液和分散良好的超高分子量聚乙烯纳米复合纤维
石墨烯等碳纳米粒子的优异特性有望提高许多材料的性能和功能。由于聚合物密度低、制造方法灵活,因此聚合物的增强技术备受关注。然而,由于石墨烯颗粒容易形成降低性能的团聚体,在聚合物中分散石墨烯已被证明是一项持久的挑战。此外,用于纳米粒子分散的有效溶剂通常是有害的、不可再生的石化产品。在这项工作中,一种生物衍生溶剂 1,4-蒎烯被证明是这些溶剂的可再生替代品,可用于形成高度稳定的石墨烯纳米板(GnP)悬浮液,并用于凝胶纺丝分散良好的超高分子量聚乙烯/GnP 纳米复合纤维。纤维中的 GnP 浓度在 0.01 至 1 wt% 三个数量级之间变化,以考察其对纤维微观结构和性能的影响。在低浓度下,颗粒作为点缺陷不会影响纤维的微观结构,而颗粒/基质界面粘附性差会导致机械性能显著降低。当 GnPs 含量为 1 wt% 时,网络效应开始显现,从而增强了纤维,但颗粒也阻碍了纤维中关键承载结晶结构的生长和取向。本研究揭示了 GnPs 对高度取向和结晶聚合物的微观结构影响,为今后开发高性能聚合物纳米复合纤维提供了重要启示。
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来源期刊
CiteScore
26.00
自引率
21.40%
发文量
185
期刊介绍: Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.
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