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Study on the synthesis of poly(ether‐block‐amide) copolymer based on nylon6 and poly(ethylene oxide) with various block lengths
Author(s) -
Peyravi M.,
Babaluo A. A.,
Ardestani M. Akhfash,
Aghjeh M. K. Razavi,
Pishghadam S.R.,
Hadi P.
Publication year - 2010
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.32358
Subject(s) - ethylene oxide , polyamide , copolymer , materials science , polymer chemistry , oxide , phase (matter) , morphology (biology) , block (permutation group theory) , chemical engineering , polymer , composite material , chemistry , organic chemistry , genetics , geometry , mathematics , biology , engineering , metallurgy
Abstract Various segmented block copolyetheramides based on nylon6 (N6) and poly(ethylene oxide) (PEO) with different compositions and block length of the hard and soft segments were synthesized. The effect of composition of the hard and soft segments was studied via FTIR spectroscopy based on the characteristic peak of ester group at wave number of 1730 cm −1 . The average block length of the hard and soft segments in block copolymers was determined from H‐NMR analysis. Differential thermal analysis thermograms confirmed a microphase separated morphology over a broad range of temperature, leading to two separated crystalline domains. An increase in the interconnectivity of the polyamide segments controlled by chain extension, greatly improved the formation of polyamide lamellae crystals determined by X‐ray diffractometry. Atomic force microscopy images indicated different morphologies of dispersed phase in the dominant phase, which plays an important role in their performance for membrane processes. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010