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2020 Vol.52, Issue 6 Preview Page
Changes in the Hydrophobization Efficiency of Paper by Humidification Pretreatment during Gas Grafting Treatment Using Palmitoyl Chloride

염화 팔미토일을 적용한 종이의 가스 그라프트 처리 시 조습 전처리에 의한 소수화 효율 변화 연구

Kyoung-Hwa Choi1
,
Ji-Seon Choi2
,
Kwang-Seob Lee3
,
Eun-Seon Lee4
,
Jeong-Yong Ryu5†
최경화 1
,
최지선 2
,
이광섭 3
,
이은선 4
,
류정용 5†
1Changgang Institute of Paper Science and Technology, Kangwon National University, Chuncheon
2Dept. of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon
3Changgang Institute of Paper Science and Technology, Kangwon National University, Chunchon
4Changgang Institute of Paper Science and Technology, Kangwon National University, Chunchon
5Dept. of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon
1강원대학교 창강제지기술연구소, 연구교수
2강원대학교 산림환경과학대학 제지공학과, 대학원생(석사과정)
3강원대학교 창강제지기술연구소, 책임연구원
4강원대학교 창강제지기술연구소, 전임연구원
5강원대학교 산림환경과학대학 제지공학과, 교수
†Corresponding author: E-Mail: jyryu@kangwon.ac.kr (Address: Changgang Institute of Paper Science and Technology, Kangwon National University, Chuncheon, Republic of Korea)
30 December 2020. pp. 25-33
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Abstract

The effect of pre-humidification treatment on the efficiency of gas grafting treatment of paper with palmitoyl chloride was investigated. Three types of paper samples containing filter paper, bible paper (thin paper) and glassine paper were humidified under 90% RH conditions, and these samples were then gas grafted by palmitoyl chloride. Changes in fatty acid content, Cobb size degree, brightness, color, and tensile strength of these paper samples were measured. The grafted fatty acid content of filter paper that is the bulky paper made of pure cellulose was increased by humidification pretreatment at 90% RH condition and found to have decreased Cobb size values for cold and hot water. However, an increase in the free fatty acid content was also observed due to an increase in the incidental reaction between fatty acid chloride and moisture. The hydrophobicization efficiency of the other two paper samples did not change by the humidity pretreatment. Humidification pretreatment had little effect on changes in the optical properties and strength of the paper during gas grafting.

Keywords
Gas grafting
hydrophobization
humidification pretreatment
palmitoyl chloride
grafted fatty acid content
Cobb size value
References

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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 : 52
  • No :6
  • Pages :25-33
  • Received Date : 2020-10-21
  • Revised Date : 2020-11-29
  • Accepted Date : 2020-12-01
  • DOI :https://doi.org/10.7584/JKTAPPI.2020.12.52.6.25
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