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Polymer Bulletin
Erschienen in: Polymer Bulletin 2/2015

01.02.2015 | Original Paper

Relations between the neutralization level and clustering of amorphous ionomers

verfasst von: Su-Hwan Kim, Young-Min Kim, Joon-Seop Kim, Jeong-A Yu

Erschienen in: Polymer Bulletin | Ausgabe 2/2015

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Abstract

The effect of neutralization level on the dynamic mechanical properties and morphology of partly neutralized poly(ethyl acrylate-co-Na acrylate) EANa ionomers was investigated. The mechanical data of EANa ionomers were compared to those of polystyrene-based ionomers having higher T g but lower ion content than the EANa ionomers. It was found that at ca. 44 % neutralization, compared to ca. 50 % neutralization for styrene ionomers, the ionomers started to show cluster T g and ionic modulus. Thus, it was suggested that the 40–50 % neutralization level might be a starting point, at which the amorphous Na-neutralized ionomers, regardless of the matrix T g and acid content, behaved like bi-phasic materials. The SAXS study suggested that with increasing neutralization level the number of multiplets increased slightly but the number of ion pairs per multiplet increased systematically.
Vorheriger Artikel Synthesis and characterization of sulfonated poly(aromatic imide-co-aliphatic imide) (S-coPI) membrane for direct methanol fuel cells
Nächster Artikel “Mono” and “bifunctional” aromatic esterificated benzophenone photoinitiators for free radical polymerization

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Metadaten
Titel
Relations between the neutralization level and clustering of amorphous ionomers
verfasst von
Su-Hwan Kim
Young-Min Kim
Joon-Seop Kim
Jeong-A Yu
Publikationsdatum
01.02.2015
Verlag
Springer Berlin Heidelberg
Erschienen in
Polymer Bulletin / Ausgabe 2/2015
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-014-1273-4

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