자외선/오존 조사에 의한 Poly(butylene adipate-coterephthalate) 필름의 광산화
56권 4호, pp. 193-197,
8월 2019
10.12772/TSE.2019.56.193
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요약
Biodegradable poly(butylene adipate-co-terephthalate) (PBAT) film was modified
by UV/ozone irradiation. The surface properties of the irradiated PBAT were characterized
by surface roughness, contact angles, ESCA, and ATR analyses. The UV/ozone
treatment uniformly roughened the film surface, where the maximum surface roughness
of the unirradiated sample increased from 74 nm to 239 nm with UV energy of 15.9 J/cm2.
The modified PBAT became more hydrophilic as indicated by lower water contact angles of
10 o compared to the 72 o of the unirradiated PBAT. In addition, surface energy increased
from 44.8 mJ/m2 for the unirradiated PBAT to 50.1 mJ/m2 with a larger UV energy of up to
15.9 J/cm2. In addition, the improvement in hydrophilicity was caused by the introduction
of polar groups containing oxygen bonds such as C-O and C=O resulting in higher O1s/
C1s, which in turn resulted in a higher dyeability of the modified film to a cationic dye. The
increased dyeability may have resulted from the photochemically introduced anionic and
dipolar dyeing sites on the photo-oxidized PBAT surface.
통계
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