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Chemical structure designing to enhance the yield stress of electrorheological fluids based on modified chitosan compounds
Author(s) -
Ko Young Gun,
Choi Ung Su,
Sung Bo Hyun
Publication year - 2004
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.20632
Subject(s) - electrorheological fluid , silicone oil , shear stress , materials science , chitosan , chemical engineering , shear (geology) , mixing (physics) , shear rate , yield (engineering) , silicone , polymer chemistry , rheology , composite material , electric field , physics , quantum mechanics , engineering
For studying the influences of alkyl chain length, end groups of the side chains, and mixture on enhancing the shear stress of electrorheological (ER) fluids, chitosan carboxylates were synthesized for ER particles and prepared ER fluids by dispersing the particles in silicone oil. After comparing the shear stress of all prepared ER fluids, the conclusion obtained was that ER particles having two functional groups showed higher shear stress than those having one functional group. However, after mixing two ER particles having one functional group respectively, the ER fluid having those particles showed a lower shear stress. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 93: 1559–1566, 2004