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Description:

Polyamides (PA, “nylon”) is a class of thermoplastic polymers characterized by good heat/chemical resistance, mechanical properties, and processability, leading to widespread use in various automotive components. The two most common varieties, PA6 and PA66, are petroleum-based and carry a relatively large carbon footprint. Thus, bio-based alternatives such as PA11 have been introduced in recent decades. However, these polymers tend to have longer alkyl chains and exhibit lower mechanical properties than their traditional counterparts. In this work, glycol-modified lignin (GL) biomass is added to PA11 to create a blended matrix for short-carbon fiber composites in order to improve performance while maintaining a high biomass content. Characterization of the structure and properties of the resulting blends shows that PA11 and GL are highly compatible with uniform dispersion, which is essential for improving mechanical properties without sacrificing processability. Furthermore, the tensile modulus and strength of the short-fiber composites containing lignin exceeds that expected from the rule of mixtures, reaching performance comparable to super engineering plastic compounds like PEEK/GF30. The applicability of these biomass composites for more sustainable automotive components is discussed.

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• In Copyright
  

Keyword: Polyamide 11, Lignin, Sustainable Composites

Conference: 24th International Conference on Composite Materials (ICCM24) (2025-08-04 - 2025-08-08)

Funding:

• Ministry of Agriculture, Forestry and Fisheries J008722 (Development of Glycol Lignin-Based High-Value-Added Materials)

Manuscript type: Not a journal article

MDR DOI: https://doi.org/10.48505/nims.6139

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Updated at: 2026-01-18 08:30:08 +0900

Published on MDR: 2026-01-17 08:22:13 +0900