Preparation of electrorheological active ionomers from poly(2-hydroxyethyl methacrylate)-co-poly(4-vinyl pyridine)
✍ Scribed by Hasim Yilmaz; Halil Ibrahim Unal
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 119 KB
- Volume
- 99
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
Abstract
In this study, synthesis, characterization, partial hydrolysis, and salt formation of poly(2‐hydroxyethyl methacrylate)‐co‐poly(4‐vinyl pyridine), (poly(HEMA)‐co‐poly‐(4‐VP)) copolymers were investigated. The copolymers were synthesized by free radical polymerization using K~2~S~2~O~8~ as an initiator. By varying the monomer/initiator ratio, chain lengths of the copolymers were changed. The copolymers were characterized by gel permeation chromatography (GPC), viscosity measurements, ^1^H and ^13^C NMR and FTIR spectroscopies, elemental analysis, and end group analysis methods. The copolymers were partially hydrolyzed by p‐toluene sulfonic acid monohydrate (PTSA·H~2~O) and washed with LiOH~(aq)~ solution to prepare electrorheological (ER) active ionomers, poly(Li‐HEMA)‐co‐poly(4‐VP). © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 99: 3540–3548, 2006