Hydrophobic surface properties of fluoropolyetherimide blends for pervaporation membranes

Hydrophobic surface properties of fluoropolyetherimide blends for pervaporation membranes

The well‐known polyetherimide (ULTEM 1000) is obtained by step‐reaction of bisphenol. A diphthalic anhydride (BAPA) with m‐phenylene diamine and newly related fluorinated poly etherimides synthesized from BAPA and 2,3‐bis(2,2,3,3,4,4,5,5,5‐nonafluoropentyl)butan‐1,4 diamine (NFD) led to compatible b...

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Veröffentlicht in:Polymer international 2003-12, Vol.52 (12), p.1795-1798
Hauptverfasser: Larhrafi, M, Mas, A, Toreis, N, Blancou, H, Schué, F
Format: Artikel
Sprache:eng
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Applied sciences
blends
Exact sciences and technology
Exchange resins and membranes
fluorinated polyetherimide
Forms of application and semi-finished materials
glass transition temperature
Polymer industry, paints, wood
surface energy
Technology of polymers
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container_end_page 1798
container_issue 12
container_start_page 1795
container_title Polymer international
container_volume 52
creator Larhrafi, M
Mas, A
Toreis, N
Blancou, H
Schué, F
description The well‐known polyetherimide (ULTEM 1000) is obtained by step‐reaction of bisphenol. A diphthalic anhydride (BAPA) with m‐phenylene diamine and newly related fluorinated poly etherimides synthesized from BAPA and 2,3‐bis(2,2,3,3,4,4,5,5,5‐nonafluoropentyl)butan‐1,4 diamine (NFD) led to compatible blends over the entire range of composition. Miscible one‐phase blends have been suggested by a good correlation of Tg versus NFD monomer unit weight fraction (w) (Fox and Couchman equations) and a regular morphology by scanning electron microscopy. Surface energy of blend films fell from 45.3 to 27.4 mJ m−2 for w ≥ 0.1 corresponding to a NFD molar fraction y ≥ 0.06. Cast‐evaporated films from fluorinated copolyetherimides and blends with y < 0.15 were ductile and gave conveniently hydrophobic non‐porous membranes that withstood the experimental conditions of pervaporation tests. Copyright © 2003 Society of Chemical Industry
doi_str_mv 10.1002/pi.1373
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source Wiley Online Library Journals Frontfile Complete
subjects Applied sciences
blends
Exact sciences and technology
Exchange resins and membranes
fluorinated polyetherimide
Forms of application and semi-finished materials
glass transition temperature
Polymer industry, paints, wood
surface energy
Technology of polymers
title Hydrophobic surface properties of fluoropolyetherimide blends for pervaporation membranes
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