MECHANICAL PROPERTIES OF THERMOPLASTIC-BASED COMPOSITES BY SURFACE TREATMENT OF LIGNIN BIO-FILLER

Jin-Woo Lee, Ji-Eun Lee, Seung-Bo Shim, Sang-Hyun Lee, Jae-Young Lee, Hyun-Ju Park and Yun-Hae Kim
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Jin-Woo Lee: Korea Institute of Materials Convergence Technology, 152 Danggamseo-ro, BusanJin-gu, Busan 47154, Republic of Korea
Ji-Eun Lee: Korea Institute of Materials Convergence Technology, 152 Danggamseo-ro, BusanJin-gu, Busan 47154, Republic of Korea§Department of Polymer Science & Engineering, Pusan National University, 63-2 Pusan daehak-ro, Geumjeong-gu, Busan 46241, Republic of Korea
Seung-Bo Shim: Korea Institute of Materials Convergence Technology, 152 Danggamseo-ro, BusanJin-gu, Busan 47154, Republic of Korea
Sang-Hyun Lee: ��Lignum Inc. 99 Daehak-ro, Yuseong-gu, Dajeon 34134, Republic of Korea
Jae-Young Lee: Korea Institute of Materials Convergence Technology, 152 Danggamseo-ro, BusanJin-gu, Busan 47154, Republic of Korea‡Department of Advanced Materials Convergence Engineering, National Korea Maritime and Ocean University, 727 Taejong-ro, Yeongdo-gu, Busan 49112, Republic of Korea
Hyun-Ju Park: Korea Institute of Materials Convergence Technology, 152 Danggamseo-ro, BusanJin-gu, Busan 47154, Republic of Korea§Department of Polymer Science & Engineering, Pusan National University, 63-2 Pusan daehak-ro, Geumjeong-gu, Busan 46241, Republic of Korea
Yun-Hae Kim: ��Department of Advanced Materials Convergence Engineering, National Korea Maritime and Ocean University, 727 Taejong-ro, Yeongdo-gu, Busan 49112, Republic of Korea

Surface Review and Letters (SRL), 2025, vol. 32, issue 08, 1-9

Abstract: Lignocellulosic bio-fillers are a promising new material for composites. They are made from plant materials and have several advantages over traditional fillers, such as being lightweight, high strength, biodegradable, and environmentally friendly. However, one of the challenges in using lignocellulosic bio-fillers is that they can be hydrophilic, which can lead to phase separation when mixed with hydrophobic polymers. This can degrade the mechanical properties of the composites. Surface treatment of the lignocellulosic bio-filler can be used to reduce their hydrophilicity and improve their compatibility with hydrophobic polymers. This can improve the mechanical properties of the composites. In this study, the effect of surface treatment on the mechanical properties of lignocellulosic bio-filler-reinforced thermoplastic composites was investigated. The results showed that surface treatment can significantly improve the mechanical properties of the composites. Chemical treatment was more effective than physical treatment in improving the mechanical properties of the composites. However, the mechanical properties of the composites decreased as the lignin-filler loading increased. The results of this study suggest that surface treatment is an effective method for improving the mechanical properties of lignocellulosic bio-filler-reinforced thermoplastic composites. However, the optimal lignin-filler loading should be carefully considered to achieve the desired mechanical properties.

Keywords: Lignocellulosic bio-filler; lignin; hydrophobic; bio-filler; composites (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1142/S0218625X25400128

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