High-strength electrospun polydimethylsiloxane/polytetrafluoroethylene hybrid membranes with stable and controllable coral-like structures. (January 2023)

• Record Type: Journal Article
• Authors: Zhang, Wenshuo; Shi, Yongheng; Wang, Baoshun; Han, Ying; Zhang, Rufan
• Is Part Of: Composites. Volume 164(2023)
• Publication Date: 2023-01
• Subjects: A. Fibres -- B. Physical properties -- B. Microstructures -- E. Electrospinning; Composite materials -- Periodicals; Manufacturing processes -- Periodicals; Composite materials; Manufacturing processes; Periodicals; 620.11805
• DOI: 10.1016/j.compositesa.2022.107316
• Languages: English
• ISSNs: 1359-835X

Abstract

Graphical abstract: Highlights: A simple method that can ameliorate porous PTFE membrane is proposed. Membranes with robust biomimetic structures are successfully fabricated. The Young's modulus of the hybrid membrane can be enhanced up to 31.11 times. A novel hybrid biomimetic membrane revealed adjustable functionalities. Abstract: Polytetrafluoroethylene (PTFE) electrospun membranes have high specific areas, large porosities, and tunable structures. However, the fact that they are fragile and easily broken severely restricts their wide applicability. Using a coaxial electrospinning technique, we created a high-strength electrospun membrane with a stable coral-like microscale structure. Polydimethylsiloxane (PDMS), polyethylene oxide (PEO), and PTFE were employed as experimental materials. In addition, the microstructures and characteristics of these membranes could be easily manipulated by changing the electrospinning settings. Compared to the original properties of electrospun PTFE mats, the incorporation of PDMS into PTFE significantly improved mechanical performance. Young's modulus of the PDMS/PTFE membrane could be enhanced as much as 31.11 times. The as-prepared PDMS/PTFE membranes were hydrophobic. The excellent functionalities make this novel composite a well-qualified candidate for many cutting-edge applications.