Micro-Nano Dual-Scale All-Polymer particles for construction of superwetting surface with controllable wettability and Hot-Water-Repellency

Based on the principle of like dissolves like, the reactive oil phases, consisted of monomers, cross-linked monomers, fluorinated monomers and initiators, were absorbed into cavity of hollow polymer microspheres to obtain reactants-loaded particles in the stirring condition at room temperature; in the effect of heating, the internal reactants could polymerize to glut its core cavity and shell pores, hereupon a quantity of nanoscale copolymer surface protrusions were produced; ultimately, the micro-nano dual-scale all-polymer particles (MNDPs) were integrally formed by dispensing with any chemical modification, which physico-chemical properties could be regularly controlled by utilizing alteration of absorbed fluorinated monomers types. In view of the special wetting behaviour for various temperature water droplets to anti-wetting MNDPs-based surfaces, the superhydrophobic fabric, applicable to anti-fouling and self-cleaning, was prepared by coating with short fluoroalkyl chain-containing MNDPs; additionally, near-spherical organic fluorine MNDPs were in a position to build hot-water-repellent fabric, which preventing high-temperature droplets from infiltrating or spreading. Furthermore, mathematical analysis of the hot-water-repellent surface was carried out to establish its theoretical wetting model. We believe that the constructed MNDPs, equipped with controlled microstructure and chemical composition, are conducive to realizing the fine regulation of wettability for superwetting MNDPs-coated surface; by means of discussion for static and dynamic contact status of different temperature droplets onto antiwetting-adjustable MNDPs-based surface, functional coated fabric, that exhibited superhydrophobicity or hotwater-repellency, would be formed, it has favourable research value on high durable non-wetted flexible textile coating; based on mathematical model of wetting state for hot-water-repellent surface, the mechanism, as regards effective blocking thermal-droplet at its contact area from wetting, is clearly clarified, which is beneficial to develop special industrial textiles with high-temperature water proofing.

Automated summary

By utilizing the principle of like dissolves like, micro-nano dual-scale all-polymer particles (MNDPs) with controlled microstructure and chemical composition were successfully prepared. The special wetting behavior of different temperature water droplets on MNDPs-based surfaces allowed the development of superhydrophobic and hot-water-repellent fabric coatings, which have significant research value.