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Open AccessReview

In Search of a Green Process: Polymeric Films with Ordered Arrays via a Water Droplet Technique

1
Institute of Polymer Science and Engineering, National Taiwan University, Taipei 106, Taiwan
2
Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 106, Taiwan
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(9), 1473; https://doi.org/10.3390/polym11091473
Received: 15 August 2019 / Revised: 2 September 2019 / Accepted: 5 September 2019 / Published: 9 September 2019
(This article belongs to the Section Polymer Applications)
As an efficient technique for the preparation of polymeric hexagonal orderly arrays, the breath figure (BF) process has opened a modern avenue for a bottom-up fabrication method for more than two decades. Through the use of the water vapor condensation on the solution surface, the water droplets will hexagonally pack into ordered arrays, acting as a template for controlling the regular micro patterns of polymeric films. Comparing to the top-down techniques, such as lithography or chemical etching, the use of water vapor as the template provides a simple fabrication process with sustainability. However, using highly hazardous solvents such as chloroform, carbon disulfide (CS2), benzene, dichloromethane, etc., to dissolve polymers might hinder the development toward green processes based on this technique. In this review, we will touch upon the contemporary techniques of the BF process, including its up-to-date applications first. More importantly, the search of greener processes along with less hazardous solvents for the possibility of a more sustainable BF process is the focal point of this review. View Full-Text
Keywords: breath figure (BF) method; ordered arrays; water droplets; green process breath figure (BF) method; ordered arrays; water droplets; green process
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MDPI and ACS Style

Yeh, S.-C.; Wu, C.-H.; Huang, Y.-C.; Lee, J.-Y.; Jeng, R.-J. In Search of a Green Process: Polymeric Films with Ordered Arrays via a Water Droplet Technique. Polymers 2019, 11, 1473.

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