Porous chitosan particles doped by in situ formed silver nanoparticles: Electrorheological response in silicon oil

被引:7
作者
Kuznetsov, Nikita M. [1 ]
Kovaleva, Victoria V. [1 ]
Volkov, Danila A. [1 ]
Zagoskin, Yuriy D. [1 ]
Vdovichenko, Artem Yu. [1 ,2 ]
Malakhov, Sergey N. [1 ]
Bakirov, Artem V. [1 ,2 ]
Yastremsky, Eugeny V. [1 ,3 ]
Kamyshinsky, Roman A. [1 ,3 ,4 ]
Stupnikov, Alexei A. [1 ]
Chvalun, Sergei N. [1 ,2 ]
Grigoriev, Timofei E. [1 ,4 ]
机构
[1] Natl Res Ctr Kurchatov Inst, Nanobiomat & Struct Dept, Lab Polymer Mat, Moscow, Russia
[2] Russian Acad Sci, Enikolopov Inst Synthet Polymer Mat, Lab Funct Polymer Struct, Dept Biopolymers, Moscow, Russia
[3] Russian Acad Sci, Shubnikov Inst Crystallog, Fed Res Ctr Crystallog & Photon, Lab Elect Microscopy, Moscow, Russia
[4] Moscow Inst Phys & Technol, Inst Nano Bio Informat Cognit & Sociohumanist Sci, Dolgoprudnyi, Moscow Region, Russia
基金
俄罗斯科学基金会;
关键词
chitosan; colloids; electrorheological fluids; silver nanoparticles; stimuli-responsive materials; NANOCOMPOSITES; STABILITY; CHITIN; SUSPENSIONS; POLYMER; FLUID; WATER;
D O I
10.1002/pat.5817
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Effect of in situ formed silver nanoparticles doping on electrorheological response of highly porous chitosan particles in suspensions of polydimethylsiloxane (silicone oil) is considered. Silver nanoparticles are directly reduced by chitosan from solution. Highly porous chitosan particles with different silver content are fabricated by spraying from solution followed by freeze-drying. A high and stable electrorheological response of suspensions in wide range of electric field strength is observed at a very low filler content of 1 wt%. The nature of the electrorheological effect is considered from the standpoint of dielectric spectroscopy. The activation energies of polarization processes are determined from the temperature dependences of the dielectric loss modulus. The study shows the opportunity to control the properties of stimuli-responsive materials by changing the structure and physicochemical properties of the functional filler. This approach opens up new possibilities for creating materials with high performance and predetermined properties.
引用
收藏
页码:3643 / 3657
页数:15
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