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2019 Vol.51, Issue 3 Preview Page
Artificial Aging Characteristics of Hydrophobic Hanjis Grafted by Gaseous Palmitoyl Chloride

염화 팔미토일을 이용한 기상 그라프트 처리에 의해 제조된 소수성 한지의 인공열화특성

Kyoung-Hwa Choi
,
Kwang Seob Lee
,
Jae-Hoon Lee
,
Myoung-Ku Lee1‡
,
Jeong-Yong Ryu†
최경화
,
이광섭
,
이재훈
,
이명구 1‡
,
류정용 †
Changgang Institute of Paper Science and Technology, Kangwon National University, Chunchon, 24341
1Program of Paper Science & Engineering, Division of Forest Material Science and Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon, 24341
강원대학교 창강제지기술연구소
1강원대학교 산림환경과학대학 산림응용공학부 제지공학전공
†Corresponding author: E-Mail: jyryu@kangwon.ac.kr
‡Co-corresponding Author: E-Mail: mklee@kangwon.ac.kr
30 June 2019. pp. 98-107
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Abstract

This study was conducted to investigate the effects of gas grafting treatment on the durability of Korean traditional paper i.e., Hanji. Dry heating- and humid heating-accelerated aging tests were performed. Further, the properties of each Hanji sample, including strength, optical property, Cobb size degree, and static contact angle, were analyzed. The decrease in the strength and optical characteristics of the Hanji hydrophobized via gas grafting with palmitoyl chloride during artificial aging was found to be more significant than that of untreated paper. The decrease in durability was speculated to be caused by the residual free fatty acids in the Hanji. In contrast, no changes in the Cobb size and static contact angle of the hydrophobic Hanji occurred during accelerated aging. In summary, the hydrophobicity of Hanji grafted with palmitoyl chloride remained unchanged during 30 days of dry-heating aging and 60 days of humid-heating aging, however, the durability of paper material, including strength and optical properties, deteriorated. Therefore, the attenuation and elimination of residual free fatty acids must be investigated to prevent the decrease of durability.

Keywords
Hydrophobic Hanji
gaseous grafting
Hanji type
palmitoyl chloride concentration
reaction temperature
grafting efficiency
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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 : 51
  • No :3
  • Pages :98-107
  • Received Date : 2019-05-29
  • Revised Date : 2019-06-13
  • Accepted Date : 2019-06-17
  • DOI :https://doi.org/10.7584/JKTAPPI.2019.06.51.3.98
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