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Synthesis and surface properties of amphiphilic fluorine‐containing diblock copolymers
Author(s) -
Chekurov Kirill E.,
Barabanova Anna I.,
Blagodatskikh Inesa V.,
Lokshin Boris V.,
Kondratenko Mikhail S.,
Gallyamov Marat O.,
Peregudov Alexander S.,
Khokhlov Alexei R.
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.49714
Subject(s) - copolymer , materials science , contact angle , polymer chemistry , methacrylate , diiodomethane , amphiphile , polymerization , polyester , chain transfer , chemical engineering , fluoropolymer , polymer , composite material , radical polymerization , engineering
Amphiphilic diblock copolymers (DCs) of 2,3,4,5,6‐pentafluorostyrene (PFS) and 2‐hydroxyethyl methacrylate (HEMA) of different composition and molecular weights were prepared by two‐step reversible addition–fragmentation chain transfer (RAFT) polymerization and first used for preparation of superhydrophobic coatings for cotton/polyester fabrics. The transition from hydrophobic to superhydrophobic coatings is controlled by the ratio between poly(2,3,4,5,6‐pentafluorostyrene) (PPFS) block and poly(2‐hydroxyethyl methacrylate) (PHEMA) block lengths ( P n PFS / P n HEMA ). The increase in P n PFS / P n HEMA is accompanied by a significant increase in water ( θ Н 2 О ) and diiodomethane ( θ CH 2 I 2 ) contact angles, which reach the plateau at P n PFS / P n HEMA = 3.5 and remains almost constant up to P n PFS / P n HEMA = 6.2. Surface modification of the cotton/polyester fabric with the DC having P n PFS / P n HEMA = 6.2 produced superhydrophobic surface with θ Н 2 О = 158 ± 4° and contact angle hysteresis CAH = 5 ± 2°, and θ CH 2 I 2 = 107 ± 3°.