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Surface properties of poly(ethylene oxide)‐based segmented block copolymers with monodisperse hard segments
Author(s) -
Husken D.,
Feijen Jan,
Gaymans R. J.
Publication year - 2009
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.30428
Subject(s) - copolymer , materials science , dispersity , ethylene oxide , crystallinity , polymer chemistry , contact angle , chemical engineering , oxide , amorphous solid , polymer , composite material , organic chemistry , chemistry , engineering , metallurgy
The surface properties of segmented block copolymers based on poly(ethylene oxide) (PEO) segments and monodisperse crystallizable tetra‐amide segments were studied. The monodisperse crystallizable segments (T6T6T) were based on terephthalate (T) and hexamethylenediamine (6). Due to the crystallinity of T6T6T being high (∼ 85%), the amount of amorphous T6T6T dissolved in the polyether phase was limited. The length of the PEO segments was varied (between 600 and 4600 g/mol) and effect of extending the PEO segments with terephthalic groups was investigated. Studied was the hydrophilicity of the surface by contact angle measurements and of the bulk copolymers by water absorption measurements The results were compared with data of PEO‐poly(butylene terephthalate) (PEO‐PBT) copolymers. For a given hydrophilicity of the bulk copolymer, the surface hydrophilicity decreased in the order PEO‐PBT, PEO‐T6T6T, and (PEO‐T)‐T6T6T. The use of short monodisperse hard segments resulted in low contact angles, with a lowest observed value of ∼ 29°. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009