Polymer-dispersant-stabilized Ag nanofluids for heat transfer applications

被引：7

作者：

Pavithra, K. S. ^{[1
]}

Gurumurthy, S. C. ^{[2
]}

Yashoda, M. P. ^{[1
]}

Mateti, Tarun ^{[3
]}

Ramam, Koduri ^{[4
]}

Nayak, Roopa ^{[5
]}

Murari, M. S. ^{[6
]}

机构：

[1] Manipal Acad Higher Educ Manipal, Manipal Inst Technol, Dept Chem, Udupi, Karnataka, India

[2] Manipal Acad Higher Educ Manipal, Manipal Inst Technol, Dept Phys, Nanomat & Polymer Phys Lab, Udupi, Karnataka, India

[3] Manipal Acad Higher Educ Manipal, Manipal Inst Technol, Dept Chem Engn, Udupi, Karnataka, India

[4] Univ Concepcion UdeC, Fac Ingn FI, Dept Ingn Mat DIMAT, Concepcion, Chile

[5] Manipal Acad Higher Educ Manipal, Manipal Sch Life Sci, Dept Biotechnol, Udupi, Karnataka, India

[6] Mangalore Univ, DST Purse Lab, Mangalagangothri, India

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2021年 / 146卷 / 02期

关键词：

Silver nanofluids; Dispersants; Viscosity; Thermal conductivity; THERMAL-CONDUCTIVITY; SILVER NANOFLUIDS; NANOPARTICLES; PERFORMANCE; SURFACTANTS; PVP;

D O I：

10.1007/s10973-020-10064-8

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

One-step wet chemical method has been employed for the synthesis of silver (Ag) nanofluids followed by the preparation of polyvinyl pyrrolidone (PVP), polyvinyl alcohol (PVA) and PVP-PVA mixed-dispersant-stabilized nanofluids by varying the concentration ratio of dispersants for the viscosity and thermal conductivity analysis. The optical absorption studies indicate the presence of nanoparticles in the prepared fluids (or the formation of the silver nanoparticles). The shape and size of the nanoparticles are confirmed by the field emission scanning electron microscopy, and the particle size distribution and zeta potential analysis were carried out by using dynamic light scattering. It is observed that the thermal conductivity of Ag nanofluids increases with an increase in the dispersant concentration with respect to the temperature. The maximum thermal conductivity enhancement of Ag nanofluids was observed in the presence of an equimolar ratio of PVP-PVA (1:1:1) blends as stabilizers. [GRAPHICS] .

引用

页码：601 / 610

页数：10

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