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2022 Vol.54, Issue 4 Preview Page
Application of Infrared Spectroscopy to Analyze the Degree of Substitution in Acetylated Wood Powder

아세틸화 목분의 치환도 분석을 위한 적외선 분광법의 적용

Yunji Lee1
,
Jinho Kim1
,
Kang-Jae Kim2†
이윤지 1
,
김진호 1
,
김강재 2†
1Department of Wood Science and Technology, Kyungpook National University
2Major in Wood Science and Technology, School of Forestry, Science and Landscape Architecture & Agricultural Science and Technology Research Institute, Kyungpook National University
1경북대학교 임산공학과, 학생
2경북대학교 산림과학·조경학부 임산공학전공 및 농업과학기술연구소, 교수
†Corresponding author: E-Mail: jaeya0624@knu.ac.kr (Address: Major in Wood Science and Technology, School of Forestry, Science and Landscape Architecture, Kyungpook National University, Republic of Korea)
30 August 2022. pp. 19-24
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Abstract

In biomass acetylation, the degree of substitution is important information that has traditionally been measured via titration. In this study, infrared (IR) spectroscopy was conducted to simplify the degree of substitution measurement. Principal component analysis (PCA) was performed using the information obtained from the IR spectrum to confirm the classification characteristics of the sample according to the degree of acetylation. It was confirmed that the main components affecting the classification were peaks at 1740, 1365, and 1220 cm-1. Therefore, as a result of creating a formula for calculating the degree of substitution based on these peaks, the formula based on the hydroxyl group showed higher accuracy than that based on the methylene group, and the peaks derived from acetyl groups at 1365 and 1220 cm-1 showed higher accuracy. Therefore, substitution degree analysis using IR in acetylation of wood powder is possible and yields high accuracy.

Keywords
Acetylation
degree of substitution
infrared spectroscopy
principal component analysis
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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 : 54
  • No :4
  • Pages :19-24
  • Received Date : 2022-06-05
  • Revised Date : 2022-07-09
  • Accepted Date : 2022-07-12
  • DOI :https://doi.org/10.7584/JKTAPPI.2022.08.54.4.19
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