Cellulose nanocrystal-assisted processing of nanocomposite filaments for fused filament fabrication
Cellulose nanocrystal-assisted processing of nanocomposite filaments for fused filament fabrication
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DOI：
10.1016/j.polymer.2023.125980
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发表时间：
2023-04
期刊：
影响因子：
4.6
通讯作者：
Mia Carrola;Emile Motta De Castro;A. Tabei;A. Asadi
中科院分区：
文献类型：
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作者：
Mia Carrola;Emile Motta De Castro;A. Tabei;A. Asadi
本研究介绍了一种可扩展的加工技术，其中纤维素纳米晶体（CNC）用于将原始多壁碳纳米管（CNT）整合到丙烯腈丁二烯苯乙烯（ABS）聚合物中，而无需官能化，溶剂或表面活性剂。发现纳米材料和印刷道路角度之间的协同作用，角度层取向优化机械性能，纵向取向提高导热性。力学性能提高了81%的拉伸强度和95%的弹性模量，而层间强度增加了102%。热导率的趋势表明，径向和轴向方向之间的各向异性，其中一个可以增加，而另一个是减少，与多达807%的横向样品的增加。通过优化打印方向和纳米颗粒含量，可实现定制的材料特性。
This study introduces a scalable processing technique where cellulose nanocrystals (CNCs) are used to integrate pristine multi-walled carbon nanotubes (CNTs) into acrylonitrile butadiene styrene (ABS) polymer without functionalization, solvents, or surfactants. A synergy between the nanomaterials and printed road angle was discovered, with angle ply orientation optimizing mechanical properties and longitudinal orientation improving thermal conductivity. Mechanical properties improved up to 81% in tensile strength and 95% in elastic modulus, while a 102% increase in interlaminar strength was exhibited. The thermal conductivity trend showed an anisotropy between radial and axial directions, where one could be increased while the other was diminished, with as much as 807% increase in the transverse sample. By optimizing print orientation and nanoparticle content, tailored material properties are achievable.