Preparation, structure, and properties of poly(ethyleneoxide)/lignin composites used for UV absorption

ABSTRACT A composite of poly(ethylene oxide) (PEO) and lignin (Lg) was prepared and characterized for its utility as an ultraviolet (UV) absorbing material. Due to the extensive UV absorption and excellent oxidation‐resistance of Lg, the formation of hydrogen bonds between the Lg particles and the P...

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Bibliographic Details
Published in:Journal of applied polymer science 2020-04, Vol.137 (16), p.n/a
Main Authors: Wu, Ruguang, Wang, Shiwei, Leng, Yuting, Li, Qian
Format: Article
Language:English
Subjects:
Absorption
Carbon dioxide
Composite materials
Ethylene oxide
hydrogen bond
Hydrogen bonds
Lignin
Materials science
melt strength
Oxidation resistance
Polyethylene oxide
Polymers
ultraviolet (UV) protection
Ultraviolet radiation
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Summary:ABSTRACT A composite of poly(ethylene oxide) (PEO) and lignin (Lg) was prepared and characterized for its utility as an ultraviolet (UV) absorbing material. Due to the extensive UV absorption and excellent oxidation‐resistance of Lg, the formation of hydrogen bonds between the Lg particles and the PEO molecular segments renders the Lg particles well‐dispersed in the PEO matrix. PEO/Lg composites with different Lg contents show that high levels of Lg could cause defects at the PEO/Lg composite interface. The viscosities of all composites were higher than that of pure PEO. Composite foams were further prepared under supercritical carbon dioxide conditions, all of which exhibited excellent UV‐absorption properties. This work provides a means toward convenient preparation of PEO composites with UV‐absorption ability and forms a theoretical basis for the dispersion of Lg in polymer matrices. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48593.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.48593