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Simultaneous Enhancements of UV-Shielding Properties and Photostability of Poly(vinyl alcohol) via Incorporation of Sepia Eumelanin
Abstract
Sepia eumelanin (SE), a biomacromolecule, was developed to prepare the excellent UV-shielding polymer material with better photostability. UV–vis transmittance spectra showed that poly(vinyl alcohol) PVA/SE film blocked most ultraviolet light below 300 nm even with a low concentration of SE (0.5 wt %), which still kept its high transparency in the visible spectrum. Rhodamine B photodegradation measurement further confirmed the excellent UV-shielding properties of PVA/SE film. FTIR indicated that the carbonyl absorption bands resulting from phtodegradation for PVA/SE film did not change after UV exposure for 2700 h. The tensile properties of neat PVA were deceased intensely after UV irradiation; however, those of PVA/SE film were reduced a little. Moreover, AFM indicated that the surface roughness of PVA/SE film was much lower than that of a neat PVA one. It could be concluded that SE reduced the PVA degradation rate dramatically, revealing enhanced photostability of PVA/SE film. The mechanism for outstanding UV-shielding properties and photostability of PVA/SE film was illuminated, based on the formation of charge transfer complexes (CTCs) between SE and PVA, photothermal conversion, and the well-known radical scavenging capabilities of SE.
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Cites
Hong, L., & Simon, J. D. (2007) · The Journal of Physical Chemistry B · doi:10.1021/jp071439h · Cited by 360
Cited by
Su, Y., Phua, S. Z. F., Li, Y., Zhou, X., Jana, D., Liu, G., Lim, W. Q., Ong, W. K., Yang, C., & Zhao, Y. (2018) · Science Advances · doi:10.1126/sciadv.aas9732 · Cited by 732
Metadata
- Authors
- Wang, Y., Li, T., Ma, P., Bai, H., Xie, Y., Chen, M., & Dong, W.
- Venue
- ACS Sustainable Chemistry & Engineering
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-03-18
- Volume
- 4
- Issue
- 4
- Pages
- 2252-2258
- ISSN
- 2168-0485 (ISSN-L)
- OpenAlex
- W2297184614
- Cited by
- 182
- References
- 1
- FWCI
- 11.39
- Type
- journal article
- Language
- en
- Open access
- closed
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- Wang, Y., Li, T., Ma, P., Bai, H., Xie, Y., Chen, M., & Dong, W. (2016). Simultaneous Enhancements of UV-Shielding Properties and Photostability of Poly(vinyl alcohol) via Incorporation of Sepia Eumelanin. ACS Sustainable Chemistry & Engineering. https://doi.org/10.1021/acssuschemeng.5b01734
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