✦ LIBER ✦

Low-Density Polyethylene (LDPE) Surface With a Wettability Gradient by Tuning its Microstructures

✍ Scribed by Xiaoying Lu; Jilin Zhang; Changchun Zhang; Yanchun Han

Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 297 KB
Volume: 26
Category: Article
ISSN: 1022-1336
DOI: 10.1002/marc.200400626

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✦ Synopsis

Abstract

Summary: We describe an interesting approach to the fabrication of wettability gradients from hydrophobicity to superhydrophobicity in low‐density polyethylene (LDPE) films by first forming high porosity surfaces and placing the specimens onto linear temperature gradients. While the polymer chosen for the study is non‐polar, its microporous layer provides sufficient superhydrophobicity. Lateral gradient heating of the layer results in partial melting of the polymer and correspondingly decreases porosity thus decreasing hydrophobicity.
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