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Title: From Waste to Functional Additive: Toughening Epoxy Resin with Lignin
Authors: Liu, Wanshuang
Zhou, Rui
Goh, Hwee Li Sally
Huang, Shu
Lu, Xuehong
Keywords: epoxy resin
Issue Date: 2014
Source: Liu, W., Zhou, R., Goh, H. L. S., Huang, S., & Lu, X. (2014). From Waste to Functional Additive: Toughening Epoxy Resin with Lignin. ACS Applied Materials & Interfaces, 6(8), 5810-5817.
Series/Report no.: ACS Applied Materials & Interfaces
Abstract: A novel approach to toughen epoxy resin with lignin, a common waste material from the pulp and paper industry, is presented in this article. First, carboxylic acid-functionalized alkali lignin (AL-COOH) was prepared and subsequently incorporated into anhydride-cured epoxy networks via a one-pot method. The results of mechanical tests show that covalent incorporation of rigid AL-COOH into epoxy networks can significantly toughen the epoxy matrix without deteriorating its tensile strength and modulus. The addition of 1.0 wt % AL-COOH gives increases of 68 and 164% in the critical stress intensity factor (KIC) and critical strain energy release rate (GIC), respectively, relative to that of neat epoxy. This article opens up the possibility of utilizing low-cost and renewable lignin feedstocks as effective toughening agents for thermoset polymers.
ISSN: 1944-8244
DOI: 10.1021/am500642n
Schools: School of Materials Science & Engineering 
Rights: © 2014 American Chemical Society.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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