4-(Benzimidazolisonitrosoacetyl)biphenyl modified chitosan and its copper complex: Synthesis and electrorheological properties

IF 4.5 2区化学 Q2 POLYMER SCIENCE

Polymer Pub Date : 2025-10-03 DOI:10.1016/j.polymer.2025.129177

Faruk Kayapa, Fatma Karipcin, Mürüvvet Begüm Özen, Ömer Yunus Gümüş, Halil Ibrahim Unal

引用次数: 0

Abstract

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 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).

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4-（苯并咪唑异硝基乙酰基）联苯改性壳聚糖及其铜配合物：合成及其电流变特性

采用壳聚糖与4-（苯并咪唑异硝基乙酰基）联苯缩合反应，首次合成了一种新型壳聚糖希夫碱衍生物。通过铜离子的配位反应，构建了铜（II）配合物（CsBCu）。然后用ICP-OES、ATR-FTIR、TG/DTA和SEM对其结构进行了确证。此外，作为一种新型的干基电流变流体，所合成的化合物的电流变特性在硅油中得到了广泛的研究。在2.5 mm-1外加电场下，CsBCu/SO的剪切应力值高于Cs/SO和CsB/SO，为78 Pa，这是Cu元素的顺磁性贡献所致。剪切和振荡试验揭示了施加外电场(E)时悬架的内能和粘弹性行为。

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来源期刊

Polymer 化学-高分子科学

CiteScore

7.90

自引率

8.70%

发文量

959

审稿时长

32 days

期刊介绍： Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics. The main scope is covered but not limited to the following core areas: Polymer Materials Nanocomposites and hybrid nanomaterials Polymer blends, films, fibres, networks and porous materials Physical Characterization Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films Polymer Engineering Advanced multiscale processing methods Polymer Synthesis, Modification and Self-assembly Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization Technological Applications Polymers for energy generation and storage Polymer membranes for separation technology Polymers for opto- and microelectronics.