Volume 142, Issue 10 e56571
RESEARCH ARTICLE

Lignin-Modified Epoxy Resin With Good Mechanical and Shape Memory Performance Fabricated by Synergistic Dispersion and Crosslinking With Polyetheramine

Hongjun Xu

Hongjun Xu

College of Chemistry and Materials Engineering, National Engineering & Technology Research Center of Wood-Based Resources Comprehensive Utilization, Zhejiang A&F University, Hangzhou, People's Republic of China

Microbes and Insects Control Institute of bio-Based Materials, Zhejiang A&F University, Hangzhou, People's Republic of China

Contribution: Conceptualization (lead), Formal analysis (lead), ​Investigation (lead), Methodology (lead), Writing - original draft (lead)

Search for more papers by this author
Jianqiang Pan

Jianqiang Pan

College of Chemistry and Materials Engineering, National Engineering & Technology Research Center of Wood-Based Resources Comprehensive Utilization, Zhejiang A&F University, Hangzhou, People's Republic of China

Microbes and Insects Control Institute of bio-Based Materials, Zhejiang A&F University, Hangzhou, People's Republic of China

Contribution: Formal analysis (equal), ​Investigation (lead)

Search for more papers by this author
Changbiao Chen

Changbiao Chen

College of Chemistry and Materials Engineering, National Engineering & Technology Research Center of Wood-Based Resources Comprehensive Utilization, Zhejiang A&F University, Hangzhou, People's Republic of China

Microbes and Insects Control Institute of bio-Based Materials, Zhejiang A&F University, Hangzhou, People's Republic of China

Contribution: ​Investigation (lead)

Search for more papers by this author
Songmei Zhao

Songmei Zhao

Institute of New Materials and Advanced Manufacturing, Beijing Academy of Science and Technology, Beijing, People's Republic of China

Contribution: ​Investigation (supporting)

Search for more papers by this author
Jiahao Xiao

Jiahao Xiao

College of Chemistry and Materials Engineering, National Engineering & Technology Research Center of Wood-Based Resources Comprehensive Utilization, Zhejiang A&F University, Hangzhou, People's Republic of China

Microbes and Insects Control Institute of bio-Based Materials, Zhejiang A&F University, Hangzhou, People's Republic of China

Contribution: Formal analysis (equal)

Search for more papers by this author
Hui Wang

Hui Wang

College of Chemistry and Materials Engineering, National Engineering & Technology Research Center of Wood-Based Resources Comprehensive Utilization, Zhejiang A&F University, Hangzhou, People's Republic of China

Microbes and Insects Control Institute of bio-Based Materials, Zhejiang A&F University, Hangzhou, People's Republic of China

Contribution: Formal analysis (equal)

Search for more papers by this author
Xinxing Wu

Xinxing Wu

College of Chemistry and Materials Engineering, National Engineering & Technology Research Center of Wood-Based Resources Comprehensive Utilization, Zhejiang A&F University, Hangzhou, People's Republic of China

Microbes and Insects Control Institute of bio-Based Materials, Zhejiang A&F University, Hangzhou, People's Republic of China

Contribution: ​Investigation (equal), Supervision (equal)

Search for more papers by this author
Shuaibo Han

Shuaibo Han

College of Chemistry and Materials Engineering, National Engineering & Technology Research Center of Wood-Based Resources Comprehensive Utilization, Zhejiang A&F University, Hangzhou, People's Republic of China

Microbes and Insects Control Institute of bio-Based Materials, Zhejiang A&F University, Hangzhou, People's Republic of China

Contribution: Methodology (equal)

Search for more papers by this author
Yan Zhang

Corresponding Author

Yan Zhang

College of Chemistry and Materials Engineering, National Engineering & Technology Research Center of Wood-Based Resources Comprehensive Utilization, Zhejiang A&F University, Hangzhou, People's Republic of China

Microbes and Insects Control Institute of bio-Based Materials, Zhejiang A&F University, Hangzhou, People's Republic of China

Correspondence:

Yan Zhang ([email protected])

Fangli Sun ([email protected])

Contribution: Conceptualization (lead), Formal analysis (lead), Project administration (lead), Supervision (lead), Writing - review & editing (lead)

Search for more papers by this author
Fangli Sun

Corresponding Author

Fangli Sun

College of Chemistry and Materials Engineering, National Engineering & Technology Research Center of Wood-Based Resources Comprehensive Utilization, Zhejiang A&F University, Hangzhou, People's Republic of China

Microbes and Insects Control Institute of bio-Based Materials, Zhejiang A&F University, Hangzhou, People's Republic of China

Correspondence:

Yan Zhang ([email protected])

Fangli Sun ([email protected])

Contribution: Formal analysis (equal), Writing - review & editing (equal)

Search for more papers by this author
First published: 13 December 2024

Funding: This work was supported by the Key Natural Science Foundation of Zhejiang Province (No. LZ22C160004), the National Natural Science Foundation of China (No. 32071853 and No. 22103092), and the Financial Program of Beijing Academy of Science and Technology (BJAST) (No. 24CB011-02).

ABSTRACT

To improve the reactivity and compatibility of lignin, it was first functionalized via the method of epoxidation. The epoxidized lignin (LEP) modified epoxy resin with good mechanical and shape memory performance was fabricated ingeniously by introducing the LEP into the epoxy resin homogeneously with the aid of synergistic dispersion and crosslinking of polyetheramine without using organic solvents. The effect of LEP addition on the curing reaction, thermal, mechanical, and shape memory performance of epoxy resin were intensively evaluated. The epoxy-diamine curing reaction was promoted by the LEP incorporation, and the thermal stability and mechanical performance of epoxy resin were improved. The tensile strength and modulus of the LEP-modified epoxy were increased by 14.3% and 32.5%, respectively. Such reinforcing effect of LEP on the thermal and mechanical performance was contributed to the rigid LEP chains which were chemically crosslinked into the network of epoxy resin uniformly. Also, the rigid LEP component in the cured epoxy resin inhibited the movement of chain segments, which could enhance the mechanical stability and slow down the rapid shape recovery rate of the epoxy resin network to some extent.

Conflicts of Interest

The authors declare no conflicts of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.