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Characterization of Ethyl Acetate and Trichloromethane Extracts from Phoebezhennan Wood Residues and Application on the Preparation of UV Shielding Films.
- Source :
-
Molecules . Mar2020, Vol. 25 Issue 5, p1145. 1p. - Publication Year :
- 2020
-
Abstract
- In this work, ethyl acetate (EA) and trichloromethane (TR) extracts were extracted from Phoebezhennan wood residues and the extracts were then applied to the preparation of UV shielding films (UV-SF). The results revealed that substances including olefins, phenols and alcohols were found in both EA and TR extracts, accounting for about 45% of all the detected substances. The two extracts had similar thermal stability and both had strong UV shielding ability. When the relative percentage of the extract is 1 wt% in solution, the extract solution almost blocked 100% of the UV-B (280–315 nm), and UV-A (315–400 nm). Two kinds of UV-SF were successfully prepared by adding the two extracts into polylactic acid (PLA) matrix. The UV-SF with the addition of 24 wt% of the extractive blocked 100% of the UV-B (280–315 nm) and more than 80% of the UV-A (315–400 nm). Moreover, the UV shielding performance of the UV-SF was still stable even after strong UV irradiation. Though the addition of extracts could somewhat decrease the thermal stability of the film, its effect on the end-use of the film was ignorable. EA extracts had less effect on the tensile properties of the films than TR extracts as the content of the extract reached 18%. The results of this study could provide fundamental information on the potential utilization of the extracts from Phoebe zhennan wood residues on the preparation of biobased UV shielding materials. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14203049
- Volume :
- 25
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Molecules
- Publication Type :
- Academic Journal
- Accession number :
- 142478939
- Full Text :
- https://doi.org/10.3390/molecules25051145