Premium
Synthesis and Characterization of p ‐[Perfluoro‐1‐(2‐fluorosulfonylethoxy)] ethylated Polystyrene
Author(s) -
ChuanJin Guan,
Ke Zhang,
XinLiang Feng,
ChengXue Zhao
Publication year - 2003
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20030210425
Subject(s) - chemistry , polystyrene , characterization (materials science) , polymer chemistry , combinatorial chemistry , nanotechnology , organic chemistry , polymer , materials science
A new fluorinated polystyrene bearing a p ‐substituted perfluoro[1‐(2‐fluorosulfonylethoxy)] ethyl group was synthesized via one‐electron oxidation of polystyrene by perfluoro [2‐(2‐fluorosulfonylethoxy)] propionyl peroxide at different peroxide to polystyrene molar ratios. The yield of perfluoroalkylation decreases with the increase of the reactant molar ratio. The modified polymer has been characterized by various techniques: the ring perfluoro[l‐(2‐fluorosulfonylethoxy)] ethylation has been proved by FT‐IR and 19 F NMR; the X‐ray photoelectron spectra (XPS) show the maximum binding energy of F ls , O ls C ls (two kinds of carbon atoms, namely C‐H and C‐F) and S 2p , respectively; desulfonylation of the fluorinated polystyrene appearing at 217 °C has been found by its thermogravimetric analysis (TGA). The determinations of contact angle, refractive index and glass transition temperature of the modified polymer have disclosed that when the contact angle increases with the increase of the molar ratio, the refractive index and glass transition temperature decrease. The polydispersity values indicate that the degradation of the polymer chains did not occur during the reaction.