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Preparation of Superhydrophobic Fabrics via Chemical Self‐Healing Strategy and Their High Oil/Water Separation Performance and Enhanced Durability
Author(s) -
Liu Lili,
Shan Yuxing,
Pu Maoyuan,
Zhao Xiuli,
Huang Yawen
Publication year - 2020
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201900356
Subject(s) - durability , materials science , self healing , polyethylene terephthalate , contact angle , composite material , natural rubber , silicon rubber , medicine , alternative medicine , pathology
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°, high oil/water separation efficiency (≈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.