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2025 Vol.57, Issue 6 Preview Page

Original Paper

Enhancement of Barrier Properties of Nanocellulose-Based Coated Paper via AKD and PAE Incorporation

AKD 및 PAE 복합화를 통한 나노셀룰로오스 기반 코팅지의 차단성 향상

Soyoung Chae1
,
Hakmyoung Lee1
,
Hyein Kim1
,
Seung-wook Park1
,
Seongmin Yoo1
,
Kunhee Lee1
,
Hye Jung Youn23†
채 소영1
,
이 학명1
,
김 혜인1
,
박 승욱1
,
유 성민1
,
이 건희1
,
윤 혜정23†
1Department of Agriculture, Forestry and Bioresources, College of Agriculture and Life Sciences, Seoul National University
2Department of Agriculture, Forestry and Bioresources, College of Agriculture and Life Sciences, Seoul National University
3Research Institute of Agriculture and Life Sciences, Seoul National University
1서울대학교 농림생물자원학부, 학생
2서울대학교 농림생물자원학부, 교수
3서울대학교 농업생명과학연구원, 겸무연구원
†Corresponding Author: E-mail: page94@snu.ac.kr (Address: Department of Agriculture, Forestry and Bioresources, College of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea)
30 December 2025. pp. 111-120
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Abstract

Environmental concerns associated with conventional plastic packaging have increased the demand for eco-friendly alternatives. Paper, a biodegradable and recyclable material, is a promising substitute; however, its porous and hydrophilic nature limits its barrier performance. To overcome these limitations, this study employed TEMPO-oxidized cellulose nanofibrils (TOCNs) as the primary barrier-coating material. Alkyl ketene dimer (AKD) and polyamideamine epichlorohydrin (PAE) were incorporated as hydrophobizing and cross-linking agents, respectively. The rheological properties of the TOCN-based coating solutions and the resulting coated papers were evaluated through Fourier-transform infrared spectroscopy, water and gas barrier measurements, and mechanical testing. AKD increased hydrophobicity and reduced surface moisture adsorption, whereas PAE enhanced network stability through cross-linking. Their combined addition produced a higher water contact angle and improved water vapor transmission resistance and wet tensile strength. These results indicate that conventional papermaking additives can effectively enhance the barrier properties and structural stability of nanocellulose-based coatings, supporting their potential for high-performance, eco-friendly paper packaging applications.

Keywords
Nanocellulose
paper packaging
barrier properties
coating
water vapor transmission rate
grease resistance
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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 : 57
  • No :6
  • Pages :111-120
  • Received Date : 2025-11-19
  • Revised Date : 2025-12-03
  • Accepted Date : 2025-12-03
  • DOI :https://doi.org/10.7584/JKTAPPI.2025.12.57.6.111
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