Porous Waterborne Polyurethane Films Templated from Pickering Foams for Fabrication of Synthetic Leather.

ABSTRACT: Waterborne polyurethane (WPU) latex nanoparticles with proven interfacial activity were utilized to stabilize air-water interfaces of Pickering foams through interfacial interaction with hydrophobic fumed silica particles (SPs). The rheological properties of the Pickering foam were tailored through adjustment of their SP content, which influenced their formability and stability. A Pickering foam stabilized with WPU and SPs was used as a template to prepare a WPU-SP composite porous film. The as-prepared film had intact open-cell porous structures, which increased its water absorption and water-vapor permeability. The porous film was used as a middle layer in the preparation of synthetic leather via a four-step "drying method". Compared with commercial synthetic leather, the lab-made synthe

SUBMITTER: Shi Z 

PROVIDER: S-EPMC10919083 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature