Abstract
ABSTRACTSynthesis of fluorine containing polypropylene (PPF) from chlorinated polypropylene (PPCl) via Cu(I) catalyzed Huisgen type 1,3‐dipolar cycloaddition (CuAAC) and its water repellency properties are demonstrated. Initially, clickable azido‐functional polypropylene (PPN3) and alkyne‐functionalized fluorine compound (FAl) are independently prepared by nucleophilic substitution of PPCl with azidotrimethylsilane‐tetrabutylammonium fluoride and esterification reactions of 2,2,3,3,4,4,5,5‐octafluoro‐1‐pentanol with 4‐pentyonic acid. The CuAAC reaction between PPN3 and FAl leads to corresponding PPF under mild conditions. The chemical structures and surface properties of desired PPF are characterized by Fourier transform infrared, 1H‐NMR, differential scanning calorimetry, scanning electron microscopy, atomic force microscope, and contact angle analyses. Based on water contact angle (WCA) measurement, it is found that both PPCl and PPN3 films have shown similar hydrophobicity, whereas the WCA of PPF is surprisingly decreased due to the presence of ester and triazole groups coming from FAl compound and the clicked product. This facile modification procedure could be utilized in order to alter the wetting or thermal properties of the commercial polymers for potential applications. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47072.
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