Effect of diamond nanoparticle chains on rheological properties of hydrosol

被引：22

作者：

Kuznetsov, N. M. ^{[1
]}

Belousov, S. I. ^{[1
,2
]}

Stolyarova, D. Yu. ^{[1
,3
]}

Bakirov, A. V. ^{[1
,3
]}

Chvalun, S. N. ^{[1
,3
]}

Shvidchenko, A. V. ^{[4
]}

Eidelman, E. D. ^{[4
,5
]}

Vul, A. Ya. ^{[4
]}

机构：

[1] Kurchatov Inst, Natl Res Ctr, Akad Kurchatova Pl 1, Moscow 123182, Russia

[2] Karpov Inst Phys Chem, 3-1-12,Build 6 Obukha Pereulok, Moscow 105064, Russia

[3] Russian Acad Sci, Enikopolov Inst Synthet Polymer Mat, Profsoyuznaya St 70, Moscow 117393, Russia

[4] Ioffe Inst, 26 Polytech Skaya st, St Petersburg 194021, Russia

[5] St Petersburg Chem Pharmaceut Acad, 14 Prof Popov St, St Petersburg 195022, Russia

来源：

基金：

俄罗斯科学基金会;

关键词：

Detonation nanodiamond; Sol-gel transition; Rheological properties; Chains; DETONATION NANODIAMOND; SUSPENSION; SCATTERING; PARTICLES;

D O I：

10.1016/j.diamond.2018.02.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have recently shown that the sol-gel transition occurs in hydrosol of detonation nanodiamond (DND) particles with size of 4-5 nm. Here we study properties of the hydrosol. Namely, we study the dependence of dynamic viscosity and shear stress on DND concentrations. Dynamic light scattering (DLS) and small-angle X-ray scattering (SAXS) were used for characterization of the hydrosol structure. Deagglomeration of diamond nanoparticles in preparation of the hydrosol was carrying out without mechanical milling. In contrast with previous studies viscosity was measured by rotational viscometer. The observed effects can be explained by the model, that assumes existence of particle chains connected to each other by electrostatic interaction. Moreover, the potential of this interaction is non-spherically symmetric. Such chains of DND particles are present in hydrosols even at the concentration of about 1 wt%.

引用

页码：141 / 145

页数：5

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