DataVXACS Applied Polymer MaterialsPaper
journal article·2024-03-08

Modified Natural Eucommia Ulmoides Gum Effectively Improves the Toughness and Strength of Epoxy Resins

Hongbo Liu, Wenxin Chen, Qiming Yan, Qihui Chen, Maochun Hong, Zhao-Xi Zhou, Heqing Fu

ACS Applied Polymer Materials· Volume 6· Issue 5
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Source abstract

Abstract

Epoxy resins are commonly utilized for their robust strength and high modulus. However, their brittleness is a drawback caused by their elevated cross-linking density, which restricts their suitability for numerous applications. In this study, natural eucommia ulmoides gum (EUG) underwent modification with maleic anhydride (MA) and was used to toughen epoxy resin. The modified EUG contains active sites that effectively participate in the curing process of epoxy resin, resulting in lower cross-linking density. Additionally, during the curing process, EM particles cluster together and form a “sea–island” structure, providing epoxy resin with an additional mechanism for energy dissipation and enhancing its damage resistance. The incorporation of 1% EM results in a 26.5% increase in the fracture toughness and a 40% increase in the elongation at break of epoxy resin. This research offers a validated approach for utilizing biobased materials to reinforce the toughness of epoxy resin.
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Research context

Composites

OpenAlex topics: Polymer Nanocomposites and Properties · Natural Fiber Reinforced Composites · Polymer composites and self-healing

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Chemistry, Fuzhou University, Fuzhou 350108, P. R. China

State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China

College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, P. R. China

Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, Fujian 350108, P. R. China

School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China

Funding

Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China · Chinese Academy of Sciences

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