4-(Benzimidazolisonitrosoacetyl)biphenyl modified chitosan and its copper complex: Synthesis and electrorheological properties
Küçük Resim Yok
Tarih
2025
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Sci Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A novel chitosan Schiff base derivative (CsB) was synthesized for the first time by a condensation reaction of chitosan with 4-(benzimidazolisonitrosoacetyl)biphenyl. As a result of the coordination reaction of copper ions, its copper(II) complex (CsBCu) was constructed. Then, the structures were confirmed by ICP-OES, ATR-FTIR, TG/ DTA, and SEM analysis. Furthermore, electrorheological (ER) properties of the synthesized compounds, as a new dry-based ER fluid, were extensively studied in silicone oil (SO). CsBCu/SO exhibited a higher shear stress value of 78 Pa at a 2.5 kV mm-1 applied electrical field than Cs/SO and CsB/SO, which is attributed to the contribution of the paramagnetic nature of the Cu element. The shear and oscillation tests revealed ER and viscoelastic behavior of the suspensions upon applying an external electric field (E).
Açıklama
Anahtar Kelimeler
Schiff base, Benzimidazole, Electrorheological properties, Chitosan
Kaynak
Polymer
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
339
