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Article

Utilization of Melt Fracture Phenomenon for the Preparation of Shark Skin Structured Hydrophobic Film

1
College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
2
State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Ben Bin Xu
Polymers 2021, 13(24), 4299; https://doi.org/10.3390/polym13244299
Received: 17 November 2021 / Revised: 30 November 2021 / Accepted: 1 December 2021 / Published: 9 December 2021
(This article belongs to the Section Polymer Processing and Engineering)
With the application of biomimetic shark skin microstructures with hydrophobicity in microfluidics, sensors and self-cleaning materials, microstructure processing methods are increasing. The preparation process has higher requirements for processing cost and efficiency. In this paper, linear low-density polyethylene (LLDPE) hydrophobic films were prepared with the help of melt fracture phenomenon. The equipment is a self-made single screw extruder. By adjusting the process parameters, the biomimetic shark skin structured LLDPE films with good hydrophobic property can be obtained. The surface microstructure shape of the product is related to kinds of additive, die temperature and screw speed. When AC5 was selected as an additive, the optimal processing parameter was found to be 160 °C die temperature and 80 r/min screw speed. A contact angle of 133° was obtained in this situation. In addition, the influences of die temperature and screw speed on the size of shark skin structure were also systematically investigated in this paper. It was found that the microstructure surface with hierarchical roughness had a better hydrophobic property. View Full-Text
Keywords: melt fracture; hydrophobic; biomimetic; shark skin structure melt fracture; hydrophobic; biomimetic; shark skin structure
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MDPI and ACS Style

Tang, B.; Yue, Y.; Gai, Z.; Huang, Y.; Liu, Y.; Gao, X.; Sun, J.; Wu, D. Utilization of Melt Fracture Phenomenon for the Preparation of Shark Skin Structured Hydrophobic Film. Polymers 2021, 13, 4299. https://doi.org/10.3390/polym13244299

AMA Style

Tang B, Yue Y, Gai Z, Huang Y, Liu Y, Gao X, Sun J, Wu D. Utilization of Melt Fracture Phenomenon for the Preparation of Shark Skin Structured Hydrophobic Film. Polymers. 2021; 13(24):4299. https://doi.org/10.3390/polym13244299

Chicago/Turabian Style

Tang, Bin, Yaoyu Yue, Zipeng Gai, Yao Huang, Ying Liu, Xiaolong Gao, Jingyao Sun, and Daming Wu. 2021. "Utilization of Melt Fracture Phenomenon for the Preparation of Shark Skin Structured Hydrophobic Film" Polymers 13, no. 24: 4299. https://doi.org/10.3390/polym13244299

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