In contrast to the conventional methods of improving interface and performances of plant fibre composites through fibre surface modification, this paper reports a novel approach based on the dispersion of microcrystalline cellulose (MCC) in the composite’s matrix. MCC was dispersed within the matrix of jute fibre reinforced epoxy composites to improve the fibre/matrix interface as well as mechanical, dynamic-mechanical and thermal performances. To develop these novel jute/epoxy/MCC hierarchical composites, MCC was first dispersed within an epoxy resin using a short ultrasonication process (1 h) and subsequently, the MCC/epoxy suspensions were infused through jute fabrics using the vacuum infusion technique and cured. Hierarchical composites by dispersing multi-walled carbon nanotubes (MWCNTs) within the epoxy resin were also fabricated to compare their performance with MCC based hierarchical composites. Interface (single fibre pull-out test), mechanical (tensile, flexural, izod impact), thermal (thermogravimetric analysis) and dynamic mechanical performances of the developed composites were thoroughly studied. It was observed that the addition of MCC to the epoxy matrix led to a significant increase in the interfacial shear strength (IFSS) between jute fibres and the epoxy matrix and consequently, resulted up to 18.4%, 21.5%, 28.3%, 67% and 49.5% improvements in the tensile strength, flexural strength, impact energy, storage and loss moduli, respectively as compared to the neat jute/epoxy composites. The above improvements achieved with MCC were significantly higher as compared to the MWCNT based hierarchical composites developed using the same technique.

与通过纤维表面改性改善植物纤维复合材料界面和性能的常规方法相比，本文报道了一种基于微晶纤维素（MCC）在复合材料基质中分散的新方法。MCC分散在黄麻纤维增强环氧复合材料的基质中，以改善纤维/基质界面以及机械，动态机械和热性能。为了开发这些新颖的黄麻/环氧树脂/ MCC分层复合材料，首先使用短的超声处理（1小时）将MCC分散在环氧树脂中，然后使用真空注入技术将MCC /环氧树脂悬浮液注入黄麻织物中并进行固化。还制备了通过在环氧树脂中分散多壁碳纳米管（MWCNT）的分层复合材料，以将其性能与基于MCC的分层复合材料进行比较。深入研究了所开发复合材料的界面（单纤维拉出试验），机械性能（拉伸，挠曲，悬臂梁冲击），热学（热重分析）和动态力学性能。观察到，向环氧基质中添加MCC导致黄麻纤维与环氧基质之间的界面剪切强度（IFSS）显着增加，因此，分别导致了18.4％，21.5％，28.3％，67％和与纯黄麻/环氧树脂复合材料相比，抗张强度，弯曲强度，冲击能，储能和模量损失分别提高了49.5％。