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Continuous manufacturing of reentrant structures via roll‐to‐roll process
Author(s) -
Kodihalli Shivaprakash Nischay,
Zhang Jinde,
Panwar Artee,
Barry Carol,
Truong Quoc,
Mead Joey
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.46980
Subject(s) - reentrancy , materials science , fabrication , diiodomethane , embossing , coating , composite material , surface tension , layer (electronics) , process (computing) , manufacturing process , contact angle , computer science , physics , medicine , alternative medicine , pathology , quantum mechanics , programming language , operating system
Reentrant structures have been deemed necessary for repelling low‐surface‐tension liquids. In this article, a novel manufacturing methodology using the roll‐to‐roll process to enable continuous manufacturing of reentrant structures over large areas on a polymeric film was demonstrated. A two‐stage process, composed of embossing followed by post‐compression, allowed the fabrication of reentrant structures, which cannot be easily fabricated using other processes over large areas in a continuous manner. The treatment of the reentrant surface structures with an additional coating of 1 H ,1 H ,2 H ,2 H ‐perfluorooctyltrichlorosilane layer provided liquid repellency with contact angles of 155 and 140°, respectively, for water (Y lv = 72 mN m −1 ) and diiodomethane (Y lv = 50 mN m −1 ). © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 46980.