[Variations in IR spectra of three coating materials under outdoor illumination and pot incubation].
In the present paper, polylactic acid (PLA), poly (butylenes succinate) (PBS) and polycarbonate (PC) were selected as test coating materials, and the variations in their IR spectra under conditions of outdoor illumination and pot incubation were studied, aimed to approach the degradability of these coating materials under sunlight and in soil. The IR spectra showed that after 4 months under outdoor illumination and pot incubation with brown soil and black soil, all the test coating materials had definite variations in their structural configuration, being more obvious under pot incubation than under outdoor illumination, which suggested that the test materials were degradable, and the degradability was greater in soil than under sunlight. PC had the greatest degradability, followed by PLA, and PBS. The degradability of PLA and PC was greater in black soil than in brown soil, while that of PBS was reverse.
Liu
Xing-Bin
XB
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. liuxingbin@hotmail.com
Chen
Li-Jun
LJ
Wu
Zhi-Jie
ZJ
Wang
Yue
Y
Zhang
Yu-Lan
YL
Li
Dong-Po
DP