Modification of palm fiber with chitosan-AESO blend coating

Femiana Gapsari; Djarot B Darmadi; Hans Juliano; Syarif Hidayatullah; Suteja; Sanjay Mavinkere Rangappa; Suchart Siengchin

doi:10.1016/j.ijbiomac.2023.125099

Modification of palm fiber with chitosan-AESO blend coating

Int J Biol Macromol. 2023 Jul 1;242(Pt 4):125099. doi: 10.1016/j.ijbiomac.2023.125099. Epub 2023 May 30.

Authors

Femiana Gapsari¹, Djarot B Darmadi², Hans Juliano², Syarif Hidayatullah³, Suteja³, Sanjay Mavinkere Rangappa⁴, Suchart Siengchin⁴

Affiliations

¹ Mechanical Engineering Department, Faculty of Engineering, Brawijaya University, MT, Haryono 167, Malang 65145, Indonesia. Electronic address: memi_kencrut@ub.ac.id.
² Mechanical Engineering Department, Faculty of Engineering, Brawijaya University, MT, Haryono 167, Malang 65145, Indonesia.
³ Mechanical Engineering Department, Faculty of Engineering, Mataram University, Majapahit 62, Mataram 83115, Indonesia.
⁴ Natural Composites Research Group Lab, Department of Materials and Production Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok (KMUTNB), Bangkok 10800, Thailand.

PMID: 37263328
DOI: 10.1016/j.ijbiomac.2023.125099

Abstract

Natural fibers are available as an essential substitute for synthetic fiber in many applications. However, the sensitivity of Chinese Windmill Palm or Trachycarpus Fortune Fiber (TFF) to water causes low interfacial bonding between the matrix and the fiber and at the end reduces the mechanical properties of the composite product. Alkaline treatment improves mechanical properties and does not affect water absorption. Hence, additional treatment in the coating is required. This study uses alkaline treatment and coating modification using blended chitosan and Acrylated Epoxidized Soybean Oil (AESO). Blend coating between AESO and chitosan is performed to increase water absorption and mechanical properties. TFF water resistance improved significantly after the coating, with water absorption of the alkaline/blend coating-TFF of 3.98 % ± 0.52 and swell ability of 3.156 % ± 0.17. This indicated that blend coating had formed a cross-link of fiber and matrix after alkalization. Thus, the single fiber tensile strength increased due to the alkaline treatment, and water absorption decreased due to the coating. The combination of alkaline treatment and blend coating on TFF brings excellent properties, as shown by the increase in tensile strength in both single fiber test and composite.

Keywords: Alkaline; Blend coating; Palm fiber.

MeSH terms

Alkalies / chemistry
Arecaceae* / chemistry
Biopolymers* / chemistry
Chitosan* / chemistry
Coated Materials, Biocompatible* / chemistry
Hydrophobic and Hydrophilic Interactions
Soybean Oil* / chemistry
Tensile Strength

Substances

Chitosan
Alkalies
epoxidized soybean oil
Soybean Oil
Biopolymers
Coated Materials, Biocompatible