Journal
MATERIALS LETTERS
Volume 230, Issue -, Pages 207-210Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2018.07.075
Keywords
ZnO NPs; Hydrophobicity; Hierarchical rough structure; Starch film; Paper
Funding
- National Natural Science Funds of China [31770417]
- Graduate Student Practice Innovation Program of the Jiangsu Province [KYCX17_0837]
- NSERC Canada
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Since hydrophobicity can improve the usability and functionality of materials in humid condition, enhancing the hydrophobic behavior of starch films or papers is of importance. In this work, ZnO nanoparticles (NPs) were introduced into the starch solution under ultrasonic and magnetic-stirring, followed by cast filming and paper coating. The contact angles of resulting film and coated paper containing 2% (wt) NPs were increased from 85.73 degrees to 121.45 degrees, 64.47 degrees to 103.94 degrees, respectively. The results from comprehensive characterizations confirmed the hierarchical structure created by ZnO nanoparticles on the surface of starch film as well as the formation of intact layers on coated paper. The excellent miscibility between starch and ZnO NPs was also achieved. The approach developed is promising and facilitates the hydrophobic modification of green-based materials. (C) 2018 Published by Elsevier B.V.
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