Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 137, Issue 16, Pages -Publisher
WILEY
DOI: 10.1002/app.48593
Keywords
hydrogen bond; melt strength; ultraviolet (UV) protection
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Funding
- National Science Fund [51603192]
- natural science foundation of Henan Province [182300410211]
- Scientific Research Foundation for Returned Overseas Chinese Scholars, State Education Ministry
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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. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48593.
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