Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Relations between the neutralization level and clustering of amorphous ionomers

Relations between the neutralization level and clustering of amorphous ionomers 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Polymer Bulletin Springer Journals

Relations between the neutralization level and clustering of amorphous ionomers

Loading next page...
 
/lp/springer-journals/relations-between-the-neutralization-level-and-clustering-of-amorphous-bej8L0IEUN

References (49)

Publisher
Springer Journals
Copyright
Copyright © 2014 by Springer-Verlag Berlin Heidelberg
Subject
Chemistry; Polymer Sciences; Soft and Granular Matter, Complex Fluids and Microfluidics; Characterization and Evaluation of Materials; Physical Chemistry
ISSN
0170-0839
eISSN
1436-2449
DOI
10.1007/s00289-014-1273-4
Publisher site
See Article on Publisher Site

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.

Journal

Polymer BulletinSpringer Journals

Published: Dec 11, 2014

There are no references for this article.