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Title: Advancing Molecular Weight Determination of Lignin by Multi-Angle Light Scattering

Journal Article · · Polymers

Due to the complexity and recalcitrance of lignin, its chemical characterization is a key factor preventing the valorization of this abundant material. Multi-angle light scattering (MALS) is becoming a sought-after technique for absolute molecular weight (MW) determination of polymers and proteins. Lignin is a suitable candidate for MW determination via MALS, yet further investigation is required to confirm its absolute MW values and molecular size. Studies aiming to break down lignin into a variety of renewable products will benefit greatly from a simple and reliable determination method like MALS. Recent pioneering studies, discussed in this review, addressed several key challenges in lignin’s MW characterization. Nevertheless, some lignin-specific issues still need to be considered for in-depth characterization. This study explores how MALS instrumentation manages the complexities of determining lignin’s MW, e.g., with simultaneous fractionation and fluorescence interference mitigation. Additionally, we rationalize the importance of a more detailed light scattering analysis for lignin characterization, including aspects like the second virial coefficient and radius of gyration.

Research Organization:
Univ. of North Dakota, Grand Forks, ND (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE
Grant/Contract Number:
EE0009257
OSTI ID:
2293611
Alternate ID(s):
OSTI ID: 2472305
Journal Information:
Polymers, Vol. 16, Issue 4; ISSN 2073-4360
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

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