Fabrication of porous polymer coating layers with selective wettability on filter papers via the breath figure method and their applications in oil/water separation.

ABSTRACT: A comb-like amphiphilic polymer (PBTF), composed of hydrophobic backbones and hydrophilic side chains, was employed to grow honeycomb coating layers in situ on a filter paper via directly casting a polymer solution and by the subsequent dynamic breath figure (BF) method. Through regulating the hydrophilic polymer side chain density and the solution concentration, a continuous honeycomb coating layer contouring to the filter paper surface profile, in addition to possessing a water contact angle (WCA) as high as 146°, was successfully fabricated. The present study also finds that increasing the hydrophilic side chain density will turn PBTF into a surfactant-like polymer, and thus, endow the PBTF solution with the capacity of numerous micro-nano-sized water droplets, rather than

SUBMITTER: Zhang X 

PROVIDER: S-EPMC8697688 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature