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Bark, a significant byproduct of the wood industry accounting for 10–20% of log weight, is typically utilized for low-value applications because of its high ash and lignin contents. Nevertheless, it remains a rich source of cellulose and hemicellulose, offering potential as a high-value bioproduct feedstock through appropriate pretreatment and pulping. In this study, tannin-extracted oak bark residues were subjected to organosolv pulping using either acidic (H2SO4) or alkaline (NaOH) catalysts. The pulp yields were 39.4% and 45.6% under Acid 60 (120°C, 60 min) and Alkali 90 (120°C, 90 min) conditions, respectively. Acidic pulping induced partial hydrolysis of polysaccharides, whereas alkaline treatment facilitated lignin–hemicellulose cleavage and improved carbohydrate preservation. Lignin recovered from black liquor under Acid 60 conditions exhibited the highest purity (82.8%) and recovery yield (37.3%). The resulting pulps were directly micronized by homogenization to produce well-dispersed microfibers without additional pretreatment. Overall, these findings demonstrate that tannin-extracted bark residues are promising precursors for microfibers suitable as bio-based fillers and compatibilizers, contributing to the sustainable valorization of underutilized forest biomass.

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기사명 저자명 페이지 원문 목차
Recent trends in life cycle assessment studies on pulp- and paper-based materials Seokmin Hong, Junhyeok Park, Semin Kang, Kyudeok Oh, Soojin Kwon p. 5-24
퇴행성뇌질환 치료를 위한 셀룰로오스 기반 약물전달시스템의 응용과 설계전략 = Applications and design strategies of cellulose-based drug delivery systems for the treatment of neurodegenerative diseases 우한웅, 서진호, 김지은 p. 25-40
Optimization of bacterial nanocellulose production from sweet potato waste via response surface methodology Lili Melani, Grace Brigitta Gunawan, Reso Aji Saputra Wicaksono, Gilang Mahendra Pratama p. 41-55
Preparation and characterization of methyl cellulose/pullulan/montmorillonite nanocomposite film for packaging applications Jungeon Lee, Jae Hoon Jung, Sabina Yeasmin, Neul-Sae-Rom Kim, Seong Baek Yang, Dong-Jun Kwon, Jung Wan Kim, Jeong Hyun Yeum p. 56-65
Study on the valorization of oak bark biomass. 1, Extraction and characterization of tannins Sa Rang Choi, Jung Myoung Lee p. 66-74
Study on the valorization of oak bark biomass. 2, Organosolv pulping of bark residue after tannin extraction Sa Rang Choi, Jung Myoung Lee p. 75-84
Effect of lignin recovery conditions from hardwood kraft black liquor on lignin characteristics Sa Rang Choi, Eon Jin Park, Jung Myoung Lee p. 85-93
(The) first record of cleistothecial Thermoascus crustaceus isolated from dried hardwood pulp in Korea Sunirmal Sheet, Marma Mamaching, Yang Soo Lee p. 94-102
오픈 헤드박스형 파일럿 초지기의 섬유 배향 분석 = Analysis of fiber orientation of paper using pilot machine with open headbox. 3, Effect of stock concentration and feeding speed. 3, 지료 농도 및 사출 속도에 따른 영향 최경화, 이광섭, 류정용 p. 103-110
AKD 및 PAE 복합화를 통한 나노셀룰로오스 기반 코팅지의 차단성 향상 = Enhancement of barrier properties of nanocellulose-based coated paper via AKD and PAE incorporation 채소영, 이학명, 김혜인, 박승욱, 유성민, 이건희, 윤혜정 p. 111-120
버섯 폐배지를 활용한 복합시트의 강도 및 표면 특성 향상 = Enhancement of mechanical and surface properties of composite sheets prepared using spent mushroom substrate 한승민, 최윤혁, 임완희, 정재훈, 전초현, 오지연, 이상수 p. 121-129

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