Bio-Based Hyperbranched Toughener From Tannic Acid and Its Enhanced Solvent-Free Epoxy Resin with High Performance
- Jie Xu1,3, Jiayao Yang1, Peng Lin2, Xiaohuan Liu1,*, Jinjie Zhang1, Shenyuan Fu1,*, Yuxun Tang2,*
1 School of Engineering, and Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A & F University, Hangzhou, 311300, China.
2 Zhonghang Monitoring Technology Research Institute Co., Ltd., Hangzhou, 310022, China.
3 Zhejiang Runyang New Material Technology Co., Ltd., Huzhou, 313105, China.
* Corresponding Authors: Xiaohuan Liu. Email:
; Shenyuan Fu. Email: 
; Yuxun Tang. Email: 
.
(This article belongs to this Special Issue: Renewable Polymer Materials and Their Application)
2 Zhonghang Monitoring Technology Research Institute Co., Ltd., Hangzhou, 310022, China.
3 Zhejiang Runyang New Material Technology Co., Ltd., Huzhou, 313105, China.
* Corresponding Authors: Xiaohuan Liu. Email:
(This article belongs to this Special Issue: Renewable Polymer Materials and Their Application)
Abstract
It is essential to design economic and efficient tougheners to prepare
high-performance epoxy resin; however, this has remained a huge challenge.
Herein, an eco-friendly, low-cost, and facile-fabricated bio-based hyperbranched
toughener, carboxylic acid-functionalized tannic acid (CATA), was successfully
prepared and applicated to the preparation of solvent-free epoxy resins. The
mechanical performance, morphology, structural characterization, and thermal
characterization of toughened epoxy resin system were studied. The toughened
epoxy resin system with only 1.0wt% CATA reached the highest impact strength,
111% higher than the neat epoxy resin system. Notably, the tensile strength and
elongation at break of toughened epoxy resin systems increased moderately with
increasing CATA loading. Nonphase-separated hybrids with significant
toughening effect were obtained. Additionally, the thermal stabilities of
toughened epoxy resin systems decreased with increasing CATA loading. This
study provides an eco-friendly, cost-effective, and facile approach for the
preparation of high-performance, solvent-free epoxy resins with potential for
practical applications in sealing integrated circuits and electrical devices fields.
Keywords
Solvent-free epoxy resins; bio-based toughener; bio-based curing agent; mechanical performance; thermal properties
Cite This Article
Xu, J., Yang, J., Lin, P., Liu, X., Zhang, J. et al. (2019). Bio-Based Hyperbranched Toughener From Tannic Acid and Its Enhanced Solvent-Free Epoxy Resin with High Performance. Journal of Renewable Materials, 7(12), 1333–1346.
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