Utilization of Three Bark Extractives as Natural Photostabilizers for the Photostabilization of Wood Flour/Polypropylene Composites 


Vol. 21,  No. 7, pp. 1488-1497, Jul.  2020
10.1007/s12221-020-9694-1


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  Abstract

Three kinds of tree bark extractives from trembling aspen (Populus tremuloides) (AE), lodgepole pine (Pinus contorta) (LE), and western red cedar (Thuja plicata) (RE) were produced and used as antioxidants. The antioxidation activities of those extractives were evaluated and compared with commercial antioxidant butylated hydroxytoluene (BHT). The obtained extractives were applied as natural photostabilizers to produce wood flour/polypropylene (WF/PP) composites at an addition level of 2 wt%. The composites were subjected to QUV accelerated weathering tester for a total of 1200 h. The changes in surface color, surface morphology, and surface chemistry of composites were investigated during the exposure. The results showed that all bark extractives alleviated the photodegradation of composites successfully. Among them, RE was proved to be the most effective. It exhibited excellent UV absorption and similar free-radical inhibition ability compared with BHT. Consequently, composites containing RE exhibited less discoloration, less severe surface cracking, and less changes in surface chemistry during the whole weathering process. Overall, these results revealed that RE had great potential as a natural photostabilizer in polymer systems.

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  Cite this article

[IEEE Style]

Y. Peng, N. Yan, J. Cao, "Utilization of Three Bark Extractives as Natural Photostabilizers for the Photostabilization of Wood Flour/Polypropylene Composites," Fibers and Polymers, vol. 21, no. 7, pp. 1488-1497, 2020. DOI: 10.1007/s12221-020-9694-1.

[ACM Style]

Yao Peng, Ning Yan, and Jinzhen Cao. 2020. Utilization of Three Bark Extractives as Natural Photostabilizers for the Photostabilization of Wood Flour/Polypropylene Composites. Fibers and Polymers, 21, 7, (2020), 1488-1497. DOI: 10.1007/s12221-020-9694-1.

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