Adhesion Improvement of Bio-Based Epoxy in Environmentally Friendly and High-Performance Natural Fiber-Reinforced Composites

被引：17
作者：
Kumar, Bijender [1 ]
Adil, Samia [1 ]
Kim, Jaehwan [1 ]
机构：
[1] Inha Univ, Creat Res Ctr Nanocellulose Future Composites, Incheon 22212, South Korea
来源：
MACROMOLECULAR MATERIALS AND ENGINEERING | 2023年 / 308卷 / 08期
基金：
新加坡国家研究基金会;
关键词：
bio-based epoxy; composites; durability; mechanical properties; natural fibers; MECHANICAL-PROPERTIES; FACILE SYNTHESIS; FLAME-RETARDANT; BUILDING-BLOCK; VANILLIN; THERMOSETS; LIGNIN; VITRIMER; RESINS;
D O I：
10.1002/mame.202300003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Developing robust bio-based epoxy against petroleum-derived epoxy is necessary for environmentally friendly and high-performance natural fiber-reinforced composites. A bio-based vanillin epoxy (VE) is synthesized from the lignin-derived vanillin, and a thermoset resin is prepared after mixing it with a 4,4 '-diaminodiphenyl methane (DDM) hardener. Further, it is infused in high-cellulose-containing alkali-treated jute fiber (TJF) mats through a simple approach to enhance the adhesion between the VE-DDM and TJF. Bio-based VE-DDM resin shows better compatibility with TJF than petroleum-derived bisphenol A diglycidyl ether (DGEBA) epoxy. The bio-based VE-DDM/TJF composite demonstrates the T(g)is approximate to 165 degrees C, tensile strength is approximate to 83.12 +/- 3.80 MPa, and Young's modulus is approximate to 2.86 +/- 0.10 GPa with excellent flexural strength (138.72 +/- 3.81 MPa) and flexural modulus (8.01 +/- 0.11 GPa). It also shows merits regarding hydrophobicity, reduced water absorption ability, durability, and chemical resistance in an acidic medium. The natural fiber-reinforced VE composites pave the way to produce environmentally friendly and high-performance composites for structural applications.
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页数：12
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