Volume 16, Issue 1 (Winter-Spring 2022)                   IJOP 2022, 16(1): 19-26 | Back to browse issues page

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Haghgooyan S, Ostovari F, zare H, shahedi Z. Fibroin Silk Synthesis and Fabrication of Silk Fibroin/Graphene Oxide Nano-Sheet Film for Humidity Sensing. IJOP 2022; 16 (1) :19-26
URL: http://ijop.ir/article-1-490-en.html
Fibroin Silk Synthesis and Fabrication of Silk Fibroin/Graphene Oxide Nano-Sheet Film for Humidity Sensing
Shima Haghgooyan1 , Fatemeh Ostovari *1 , Hakimeh Zare1 , Zahra Shahedi1
1- Physics Department, Faculty of Science, Yazd University, P.O. Box 89195-741, Yazd, Iran
Abstract:   (2775 Views)
Silk fibroin (SF) is a natural material that has received special attention due to its excellent mechanical and electrical properties. Nowadays, it is tried to improve the properties of SF by adding other nanomaterials such as graphene oxide (GO). Here, we extracted SF from silk cocoon and studied its properties in pure state and in the combination with graphene oxide (SF/GO). The results have shown that the presence of graphene oxide in the structure of fibroin increases the random winding formation of SF. The measurements show that the water content has a great effect on the properties of SF and SF/GO films.  The contact angle (less than 70) indicates the hydrophilic property of these films. In addition, in times greater than 50 seconds, the contact angles drop to 27° and 5° for SF and SF/GO respectively. Also, the surface resistance of the completely dried SF/GO film increases from 50 kW/sq to 220 kW/sq for 42% wt water content.
Keywords: Silk fibroin, Graphene Oxide Nano-sheet, surface resistance, water content, Humidity sensitive.
Full-Text [PDF 559 kb]   (1640 Downloads)    
Type of Study: Research | Subject: Optical Fiber, Fiber Sensors, and Optical Communications
Received: 2022/03/24 | Revised: 2022/07/15 | Accepted: 2022/07/22 | Published: 2022/12/23
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