coatings Article Preparation of Fluorine-Free Superhydrophobic Paper with Dual-Response of Temperature and pH Bin Du 1,2, Daodao Xue 1, Rubai Luo 1,2,*, Huailin Li 1,2, Kenan Yang 3 and Shisheng Zhou 1,2 1 Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi'an...