Polymer-Surface Interactions under Nanoconfinement Induce Water Resistance in Water-Soluble Polymers.
Water-soluble polymers enable benign aqueous processing but are generally unsuitable for durable coatings because they rapidly swell and dissolve upon contact with water. Here, we demonstrate that extreme nanoconfinement within the interstitial pores of densely packed silica nanoparticles imparts remarkable water resis...