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- Title
High‐performance thermosets with tailored properties derived from multi‐arm stared vanillin and carbon fiber composites.
- Authors
Guo, Zongwei; Xu, Zice; Dong, Zhiqiang; Zhang, Mengjie; Chi, Zhiyuan; Li, Ming; Shang, Lei; Ao, Yuhui
- Abstract
Vanillin, a rigid compound can be separated from lignin, is a promising sustainable candidate for industrial and high performance polymers, while synthesis of hexa‐epoxies is challenging. Meanwhile, carbon fiber reinforced bio‐based polymers combining high performance are more difficult to be achieved because of the contradictions of liquidity and high rigidity in the polymer structure and performance. In this paper, a novel hexa‐epoxy functionalized bio‐based epoxy resin (HPVIGEP) with a multi‐arm star structure, which simultaneously reduced the viscosity and improved thermo‐mechanical properties. The rheological behavior analysis results of HPVIGEP indicated that the viscosity was 3406.9 mPa·s at 25°C, which dramatically decreased by 75.8% compared to DGEBA (14,096 mPa·s), leading to excellent processability and adaptability. At the same time, the study on mechanical properties revealed that the cured HPVIGEP manifested 30.6%, 33.7% and 49.0% in higher tensile strength, tensile modulus and storage modulus (30°C) than of cured commercial epoxy, respectively. The tensile strength and flexural strength of carbon fiber composites which were applied HPVIGEP were increased by 9.3% and 10.9%, respectively. In a word, this work provides the promise for the application of environmentally friendly bio‐based composite materials.
- Subjects
CARBON composites; FIBROUS composites; EPOXY resins; COMPOSITE materials; VANILLIN; STAR-branched polymers; LIGNIN structure
- Publication
Journal of Applied Polymer Science, 2021, Vol 138, Issue 25, p1
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.50588