Esterified lignin-based resin for cellulose-long-filament reinforced polymer composites

Dickens O. Agumba; Duc Hoa Pham; Muhammad Latif; Bijender Kumar; Jaehwan Kim

doi:10.1117/12.2612849

18 April 2022 Esterified lignin-based resin for cellulose-long-filament reinforced polymer composites

Dickens O. Agumba, Duc Hoa Pham, Muhammad Latif, Bijender Kumar, Jaehwan Kim

Proceedings Volume 12045, Nano-, Bio-, Info-Tech Sensors, and Wearable Systems 2022; 1204507 (2022) https://doi.org/10.1117/12.2612849
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States

Abstract

The quest for bioderived resins and eco-friendly lightweight materials having remarkable mechanical performance is ubiquitous in scientific reports. In this work, we report a strong and tough biobased resin of esterified Polyvinyl alcohol-Citric acid-Lignin (E-PCL) suitable for nanocellulose fiber-reinforced polymer composites. The mechanical properties of the resin were optimized by varying the volumetric concentration of citric acid and subsequently esterified at 180°C. At 30% citric acid content, the esterified resin showed dramatic improvement in tensile strength (269.8%), toughness (1222.8%), Elastic modulus (273.5%), and hydrophobicity (48.5%). The adhesion strength of the resin to cellulose film was 31.92 MPa making it appropriate for green cellulose-based fiber-reinforced polymer composites. To validate our concept, three wet-spun nanocellulose filament was knit into mats on a loom and applied in composite fabrication through hand-layup and hot press. The lightweight yet strong and stiff structural composite displayed a record high flexural strength of 363.42 MPa and flexural modulus of 39.89 GPa with a water contact angle of 93.4°. Insights from this report offer a promising platform for utilizing environment-friendly resins and nanocellulose to engineer lightweight and robust structural composites for automotive, aerospace, and structural applications.

Conference Presentation

Citation Download Citation

Dickens O. Agumba, Duc Hoa Pham, Muhammad Latif, Bijender Kumar, and Jaehwan Kim "Esterified lignin-based resin for cellulose-long-filament reinforced polymer composites", Proc. SPIE 12045, Nano-, Bio-, Info-Tech Sensors, and Wearable Systems 2022, 1204507 (18 April 2022); https://doi.org/10.1117/12.2612849

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