Effects of acetylated lignin and its oriented lamellar structures on the crystallization and rheological properties of polylactic acid
Year: 2025
Type: article
Abstract: This paper investigated modified alkaline lignin for enhancing the crystallization and rheology of polylactic acid (PLA). Alkaline lignin (AL) was acetylated (ACAL) to reduce hydrophilicity and improve compatibility. Bidirectional freezing created oriented structures (FDAL/FDACAL). Results showed that lignin incorporation reduced melt viscosity, improving processability. While all variants influenced crystallization, FDACAL exhibited the most enhancement, as the synergy between acetylation and oriented structure optimized interfacial adhesion and nucleation. Melt properties were tuned by lignin type and structure. This research highlights the importance of synergistic chemical-physical lignin modification for high-performance PLA composites.
Source: Materials Letters
Authors: Man Yuan, Wenjian Huang, Xinyi Xie, Xuzhen Zhang
Institution: Zhejiang Sci-Tech University
Language: English
Subfield: Biomaterials
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,870
OpenAlex ID: W4416544186