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Retting 조건에 따른 케나프/폴리프로필렌 바이오 복합재료의 특성 변화

Effects of Retting Conditions on the Properties of Kenaf/Polypropylene Biocomposites

Byung Hwan UM1†
1한경국립대학교 식품생명화학공학부
In Press, Journal Pre-proof, Available online 1 August 2026

Abstract

본 연구에서는 Retting 조건에 따른 케나프/폴리프로필렌(PP) 바이오 복합재료의 특성 변화를 분석하였다. 케나프 섬유는 알칼리 및 산 Retting 조건에서 처리되었으며, 섬유 함량 변화에 따른 복합재료를 제조하였다. Retting 처리에 따른 케나프 섬유의 화학 조성 변화는 HPLC 분석을 통해 정량적으로 평가하였고, 복합재료의 열적 및 기계적 특성은 열중량분석(TGA)과 인장강도 시험을 통해 분석하였다. 알칼리 Retting 처리에 의해 리그닌과 헤미셀룰로오스 성분이 효과적으로 제거되어 셀룰로오스 함량이 증가하였으며, 이에 따라 섬유 수율은 감소하는 경향을 보였다. 열적 분석 결과, Retting 조건에 따라 케나프 성분의 열분해 거동에는 차이가 나타났으나 PP 매트릭스의 열적 안정성은 비교적 유지되었다. 또한 적절한 Retting 조건과 섬유 함량에서 복합재료의 인장강도가 향상되었으며, 이를 통해 케나프/PP 바이오 복합재료의 최적 제조 조건을 도출하였다.
This study investigated the effects of retting conditions on the properties of kenaf/polypropylene (PP) biocomposites. Kenaf fibers were treated under alkali and acid retting conditions, and biocomposites were fabricated with varying fiber contents. Chemical composition changes of kenaf fibers were analyzed using HPLC, while the thermal and mechanical properties of the biocomposites were evaluated by thermogravimetric analysis (TGA) and tensile testing, respectively. Alkali retting effectively reduced lignin and hemicellulose contents, resulting in increased cellulose content and decreased fiber yield. Thermal analysis revealed that retting treatment influenced the thermal degradation behavior of kenaf components, whereas the thermal stability of the PP matrix was largely maintained. Tensile strength of the biocomposites increased with appropriate retting treatment and fiber content, but excessive retting conditions led to deterioration in mechanical performance. Based on the combined thermal and mechanical properties, optimal retting conditions for kenaf/PP biocomposites were identified.

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