2018-Sustainable Industrial Processing Summit
SIPS2018
Volume 6. New and Advanced Materials and Technologies
| Editors: | F. Kongoli, F. Marquis, P. Chen, T. Prikhna, N. Chikhradze |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2018 |
| Pages: | 392 pages |
| ISBN: | 978-1-987820-92-8 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Laponite-reinforced Nanocellulose: A Wood-based Substrate for Recyclable and Foldable Electronics
Firoz Babu Kadumudi1; Mehdi Mehrali1; Alireza Dolatshahi-Pirouz1;1TECHNICAL UNIVERSITY OF DENMARK, Kgs Lyngby, Denmark;
Type of Paper: Regular
Id Paper: 258
Topic: 43
Abstract:
The quantity and speed of electronic waste (E-waste) discard has increased rapidly in recent years. Research to develop electronics that disappear has progressively gained importance, as it's a necessity to assure a sustainable environment [1, 2]. Interest in emerging green electronics follows from possibilities for broad types of applications that cannot be addressed with traditional rigid electronics, such as flexibility and foldability. Flexible devices that can be easily fabricated on polymeric substrates, which typically constitute the majority of the weight in a device, are suitable for a broad range of applications to empower conformal devices and displays[1]. Nanocellulose, extracted from wood, has been explored as bio-derived and biodegradable materials due to its good thermo-mechanical properties[3]. Even still, the current substantial thermal mismatch between nanocellulose and inorganic electronics, can result in the malfunction of electronic devices[4]. In this work, we have developed rollable nanoclay incorporated nanocellulose free standing films for flexible and recyclable electronics with improving their coefficient of thermal expansion (CTE) and thermo-mechanical properties. Specifically, we have used Laponite® nanoclay to generate nacre mimetic nanocellulose films. The electrostatic interaction of Laponite® with nanocellulose formed a flexible film with mechanically stable, thermally stable (310 °C) and low CTE (40 ppm/°C) properties. Electronic patterns were deposited on Laponite®-nanocellulose films using lithographic techniques through a shadow mask, and demonstrated their possibility in foldable electronics applications.
Note: Laponite® is a trademark of BYK Additives Ltd.