Preparation and Properties of Siloxane-Containing Superslippery Surface

In recent decades, there has been growing interest in the development of functional, fluorine- free slippery liquid-infused porous surfaces(SLIPS), such SLIPS have great potential for many applications. In this paper, amino-terminated polysiloxane (APT-PDMS) and maleic anhydride esterified β-cyclodextrin (β-CD-MAH) were used for the reaction, the polysiloxane- maleic anhydride esterified β- cyclodextrin (APT- PDMS- co- β- CD- MAH) was prepared by introducing iron ions through metal coordination reaction. The composition and structure of the polymer were examined by infrared spectroscopy, nuclear magnetic resonance，and ultraviolet spectrophotometer, respectively. A special multi-layered porous structure membrane was innovatively prepared by a simple and low-cost respiration diagram method, the hydrophobic properties of porous structured membranes were tested by a static contact angle tester, and the surface morphologies of the porous structured membrane were observed by field emission scanning electron microscopy. The results show that the molecular weight of APT-PDMS is 3504, the mole ratio of APT-PDMS to β-CD-MAH is 3:1, and the porous substrate prepared with the polymer concentration of 25 mg/mL has the best performance as well as SLIPS, the macropores in the porous substrate structure contain 2~3 small pores, and the small pores also contain a plurality of nano- scale pores, and the static contact angle is >150° . After filling with silicone oil, the sliding angle is <10o, and the SLIPS has good stability, self-cleaning, anti-icing, anti-freezing, and anti-bacterial adhesion. © 2023 Chengdu University of Science and Technology. All rights reserved.