Hydroxyapatite functionalized natural fiber‐reinforced composites: Interfacial modification and additive manufacturing

IF 4.8 2区 材料科学 Q2 MATERIALS SCIENCE, COMPOSITES Polymer Composites Pub Date : 2024-08-27 DOI:10.1002/pc.28974
Yuxuan Wu, Zhuoyuan Yang, Foram Madiyar, Yizhou Jiang, Sirish Namilae
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Abstract

Natural fibers are lightweight, cost‐effective, readily available, and eco‐friendly materials. However, natural fiber‐reinforced composites are constrained by biological inconsistency and inferior fiber‐matrix interfacial properties, which restrict effective processing using advanced additive manufacturing methods. In this study, we develop a novel concept for natural fiber composite interfaces by growing hydroxyapatite (HAP) nanocrystals on jute fibers. The resulting hybrid composite is characterized using mechanical testing, nanoindentation, and modulus mapping. The interfacial region suggests a 31.4% increase in stiffness and possesses a storage modulus of up to 7.5 GPa. The tensile modulus and strength of the hybrid composite improves by 30% and 33%, respectively. Furthermore, we develop a novel process for the additive manufacturing of jute fiber thermoset composites through a direct writing (DW) process. The HAP modification increases thermal conductivity, consequently improving the curing process during DW and enhancing composite manufacturability. We demonstrate that the DW process enables the printing of intricate multilayer geometries with varying fiber content.Highlights Hydroxyapatite is used for natural fiber composite interfacial modification. Nanoindentation shows the interfacial region exhibits 31.4% higher stiffness. Modified composites possess superior mechanical performance. Jute fibers are thermally functionalized for composite additive manufacturing. A direct writing method is developed for continuous functionalized jute fiber.

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羟基磷灰石功能化天然纤维增强复合材料:界面改性与添加剂制造
天然纤维是一种重量轻、成本低、易于获得且环保的材料。然而,天然纤维增强复合材料受到生物不一致性和纤维-基体界面性能较差的限制,从而限制了使用先进的添加制造方法进行有效加工。在本研究中,我们通过在黄麻纤维上生长羟基磷灰石(HAP)纳米晶体,为天然纤维复合材料界面提出了一个新概念。我们使用机械测试、纳米压痕和模量绘图对由此产生的混合复合材料进行了表征。界面区的刚度增加了 31.4%,储存模量高达 7.5 GPa。混合复合材料的拉伸模量和强度分别提高了 30% 和 33%。此外,我们还通过直接写入(DW)工艺开发了一种黄麻纤维热固性复合材料的新型添加制造工艺。HAP 改性增加了热导率,从而改善了 DW 过程中的固化工艺,提高了复合材料的可制造性。我们证明了 DW 工艺可以打印出不同纤维含量的复杂多层几何形状。纳米压痕测试表明,界面区域的刚度提高了 31.4%。改性复合材料具有优异的机械性能。热功能化黄麻纤维用于复合材料添加剂制造。为连续功能化黄麻纤维开发了一种直接写入方法。
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来源期刊
Polymer Composites
Polymer Composites 工程技术-材料科学:复合
CiteScore
7.50
自引率
32.70%
发文量
673
审稿时长
3.1 months
期刊介绍: Polymer Composites is the engineering and scientific journal serving the fields of reinforced plastics and polymer composites including research, production, processing, and applications. PC brings you the details of developments in this rapidly expanding area of technology long before they are commercial realities.
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