期刊
MACROMOLECULAR CHEMISTRY AND PHYSICS
卷 221, 期 2, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.201900356
关键词
oil; water separation; self-healing; silicon rubber; superhydrophobicity
资金
- Innovation Team Project of Department of Science and Technology of Sichuan Province of China [16TD0014]
- Longshan Academic Talent Research Supporting Program of Southwest University of Science and Technology [18LZXT02]
- Academic Team Project of State Key Laboratory of Environmental-Friendly Energy Materials [17fksy0102]
The ability of a fabric to restore its superhydrophobicity after damage is utilized to prepare highly durable fabrics for oil/water separation. A physical self-healing concept is a conventional way to improve durability. However, this method cannot recover the oil/water separation performance when serious damage appears. In this work, a chemical self-healing concept to solve the above problem is proposed. Self-healable silicon rubber (SR), which is cross-linked by cobalt-based coordination bonds, is coated on silica@polyethylene terephthalate (PET) fabrics. The modified fabric exhibits superhydrophobic characteristics with a contact angle of 158 degrees, high oil/water separation efficiency (approximate to 99%), and high durability. After damage, these modified fabrics enable fast self-healing at room temperature (in just 10 min) and maintain their oil/water separation efficiency above 98%. For conventional SR-modified silica@PET fabrics, their superhydrophobicity and oil/water separation efficiency significantly decreases under identical damaging. Thus, this study provides a new path for the development of various room-temperature self-healable superhydrophobic fabrics.
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