title: Novel Fluorinated Polymers Containing Short Perfluorobutyl Side Chains and Their Super Wetting Performance on Diverse Substrates.
abstract: Because the emission of perfluorooctanoic acid (PFOA) was completely prohibited in 2015, the widely used poly- and perfluoroalkyl substances with long perfluoroalkyl groups must be substituted by environmentally friendly alternatives. In this study, one kind of potential alternative (i.e., fluorinated polymers with short perfluorobutyl side chains) has been synthesized from the prepared monomers {i.e., (perfluorobutyl)ethyl acrylate (C4A), (perfluorobutyl)ethyl methacrylate (C4MA), 2-[[[[2-(perfluorobutyl)]sulfonyl]methyl]amino]ethyl acrylate (C4SA), and methacrylate (C4SMA)}, and the microstructure, super wetting performance, and applications of the synthesized fluorinated polymers were systematically investigated. The thermal and crystallization behaviors of the fluoropolymer films were characterized by differential scanning calorimetry and wide-angle X-ray diffraction analysis, respectively. Dynamic water-repellent models were constructed. The stable low surface energy and dynamic water- and oil-repellent properties of these synthesized fluorinated polymers with short perfluorobutyl side chains were attributed to the synergetic effect of amorphous fluorinated side chains in perfluoroalkyl acrylate and crystalline hydrocarbon pendant groups in stearyl acrylate. Outstanding water- and oil-repellent properties of fabrics and any other substrates could be achieved by a facile dip-coating treatment using a fluorinated copolymer dispersion. As a result, we believe that our prepared fluorinated copolymers are potential candidates to replace the fluoroalkylated polymers with long perfluorinated chains in nonstick and self-cleaning applications in our daily life.
authors.affiliation: College of Chemical and Biological Engineering, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Jingxian
authors.initials: J
authors.lastname: Jiang
authors.affiliation: College of Chemical and Biological Engineering, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Guangfa
authors.initials: G
authors.lastname: Zhang
authors.affiliation: College of Chemical and Biological Engineering, Zhejiang University , Hangzhou 310027, P. R. China.|Research and Development Center, Zhejiang Sucon Silicone Co., Ltd. , Shaoxing 312088, P. R. China.
authors.forename: Qiongyan
authors.initials: Q
authors.lastname: Wang
authors.affiliation: College of Chemical and Biological Engineering, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Qinghua
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: College of Chemical and Biological Engineering, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Zhan
authors.affiliation: College of Chemical and Biological Engineering, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Fengqiu
authors.initials: F
authors.lastname: Chen
keywords: crystalline structures; dynamic water repellency; fluoropolymers; short perfluorobutyl chains; surface molecular reconstruction