Attractive Pickering Emulsion Gels. Issue 33 (9th July 2021)

• Record Type: Journal Article
• Authors: Wu, Baiheng; Yang, Chenjing; Xin, Qi; Kong, Linlin; Eggersdorfer, Max; Ruan, Jian; Zhao, Peng; Shan, Jianzhen; Liu, Kai; Chen, Dong; Weitz, David A.; Gao, Xiang
• Is Part Of: Advanced materials. Volume 33:Issue 33(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-07-09
• Subjects: 3D printing -- emulsion gels -- pickering emulsions -- porous materials -- shear thinning; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.202102362
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract: Properties of emulsions highly depend on the interdroplet interactions and, thus, engineering interdroplet interactions at molecular scale are essential to achieve desired emulsion systems. Here, attractive Pickering emulsion gels (APEGs) are designed and prepared by bridging neighboring particle‐stabilized droplets via telechelic polymers. In the APEGs, each telechelic molecule with two amino end groups can simultaneously bind to two carboxyl functionalized nanoparticles in two neighboring droplets, forming a bridged network. The APEG systems show typical shear‐thinning behaviors and their viscoelastic properties are tunable by temperature, pH, and molecular weight of the telechelic polymers, making them ideal for direct 3D printing. The APEGs can be photopolymerized to prepare APEG‐templated porous materials and their microstructures can be tailored to optimize their performances, making the APEG systems promising for a wide range of applications. Abstract : Attractive Pickering emulsion gels (APEGs) are designed and developed by engineering interdroplet interactions at molecular scale, where telechelic polymers bridge neighboring particle‐stabilized droplets via the electrostatic attraction, forming a bridged droplet network with shear‐thinning properties. APEGs are ideal inks for 3D printing and can be employed as templates to prepare functional porous materials.