期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 362, 期 2, 页码 629-632出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2010.12.015
关键词
Polyethylene; Phase separation; Superhydrophobicity; Lower temperature
Polyethylene films were prepared with phase separation at lower temperatures. The wettability of such films varied from hydrophobicity to superhydrophobicity as the processing temperature decreased owing to the increase of surface roughness. Storing the as-prepared films at subzero temperature (-15 degrees C), it was found that the water contact angle of the film decreased obviously, and the decrease depended on the corresponding roughness. Further keeping the as-prepared films at room temperature for 30 min, the water contact angle would return to the normal value, which indicated that the reversible switching of surface wettability can be controlled by the environmental temperature. Crown Copyright (C) 2010 Published by Elsevier Inc. All rights reserved.
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