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2026 Vol.58, Issue 1 Preview Page

Original Paper

영문제목

국문제목

Min Soo Kim1
,
Ji Won Heo1
,
Yong Sik Kim2†
김 민수1
,
허 지원1
,
김 용식2†
1Department of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University
2Department of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University
1강원대학교 산림환경과학대학 제지공학과, 대학원생
2강원대학교 산림환경과학대학 제지공학과, 교수
†Corresponding Author: E-mail: yongsikk@kangwon.ac.kr (Address: Department of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon, 24341, Republic of Korea)
28 February 2026. pp. 82-92
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Abstract

In this study, lignin was sequentially modified via amination and oxypropylation to produce a dual-functional lignin derivative, and high-strength hydrogels were fabricated using the resulting lignin as a building block. It confirmed the introduction of amine groups and oxypropyl side chains, while molecular-weight analysis showed a pronounced increase in oxypropylated lignin (OL) compared with kraft lignin (KL), indicating successful structural expansion. The lignin-based hydrogels exhibited porous microstructures, and effective network formation via a ring-opening crosslinking reaction was verified. Notably, hydrogels prepared with dual-functional lignin displayed enhanced network integrity and significantly improved mechanical strength and durability relative to the reference system. These improvements were attributed to the synergistic effects of amine-derived reactive/interactive sites serving as network junctions and flexible oxypropyl side chains promoting compatibility, chain rearrangement, and energy dissipation. Overall, this work presents a practical sequential functionalization strategy to convert lignin into a hydrogel-active building block for sustainable, mechanically robust polymer networks.

Keywords
Lignin
amination
oxypropylation
dual-functional lignin
hydrogel
ring-opening crosslinking
mechanical reinforcement
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Information
  • Publisher :Korea Technical Association of The Pulp and Paper Industry
  • Publisher(Ko) :한국펄프종이공학회
  • Journal Title :Journal of Korea TAPPI
  • Journal Title(Ko) :펄프종이기술
  • Volume : 58
  • No :1
  • Pages :82-92
  • Received Date : 2026-01-29
  • Revised Date : 2026-02-09
  • Accepted Date : 2026-02-09
  • DOI :https://doi.org/10.7584/JKTAPPI.2026.2.58.1.82
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