Xu, Zhongzheng; Li, Lin; Liu, Jiawei; Dai, Caili; Sun, Wen; Chen, Jia; Zhu, Zhixuan; Zhao, Mingwei; Zeng, Hongbo published the artcile< Mussel-inspired superhydrophilic membrane constructed on a hydrophilic polymer network for highly efficient oil/water separation>, COA of Formula: C9H3F5O2, the main research area is polydopamine superhydrophilic membrane oil water separation; Mussel-inspired materials; Oil/water separation; Polymer network; Superhydrophilic surface.
Superhydrophilic/underwater superoleophobic membrane constructed by hydrophilic polymers possesses great advantage in the separation of oily waste water, due to its intrinsic oil-repellent property. The formation of hydration layer to repel and block oil is considered as the mechanism of underwater superoleophobicity and subsequent oil/water separation Constructing a stable hydrophilic polymer network on the substrate surface would significantly improve the robustness of hydration layer. In this work, a feasible and universal mussel-inspired dip-coating method was developed for constructing stable hydrophilic polymer network onto target substrate surface, via successively immersing substrate membranes into aqueous solutions of polydopamine (PDA) and catechol-functionalized hydrophilic polymer (CFHP). After pre-wetting with water, the polymer network would swell with water to form a thin and stable water film layer, serving as a barrier against oil penetration. The as-prepared CFHP/PDA modified membranes exhibit outstanding performance in separating various oil/water mixtures and oil-in-water emulsions stabilized by surfactants, with separation flux up to 5641.1 L璺痬-2璺痟-1 and separation efficiency achieving 99.98%. The surface modification method developed in this work can be easily extended to various materials and membrane systems, for achieving a variety of practical applications such as industrial wastewater treatment.
Journal of Colloid and Interface Science published new progress about Contact angle (water). 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, COA of Formula: C9H3F5O2.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics