Magnetic hydrogel with high coercivity

H. Sözeri; E. Alveroǧlu; U. Kurtan; M. Şenel; A. Baykal

doi:10.1016/j.materresbull.2013.03.041

Magnetic hydrogel with high coercivity

H. Sözeri^*, E. Alveroǧlu, U. Kurtan, M. Şenel, A. Baykal

^*Corresponding author for this work

Department of Physics Engineering

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

This study investigates the synthesis and characterization of polyacrylamide (PAAm) hydrogels containing magnetic BaFe₁₂O ₁₉ nanoparticles. Structural, electrical, and magnetic characterization of the gels have been performed with X-ray powder diffractometry, scanning electron microscopy, DC conductivity, magnetization and fluorescence spectroscopy techniques. The preparation and characterization of polyacrylamide (PAAm) hydrogels that contain 5 and 10 mg BaFe₁₂O ₁₉ (16 and 21 nm diameter) nanoparticles are described herein. It is seen from the fluorescence spectra that, nanoparticles surrounded to pyranine molecules so that some of pyranine molecules could not bound to the polymer strands. Electrical measurements show that presence of nanoparticles make the gel more homogeneous. Magnetization measurements reveal that hydrogels have hard magnetic properties with quite high coercivity of 4.2 kOe, which does not change with swelling. This feature makes these gels useful in applications as wastewater treatment if they are magnetized before use.

Original language	English
Pages (from-to)	2751-2757
Number of pages	7
Journal	Materials Research Bulletin
Volume	48
Issue number	8
DOIs	https://doi.org/10.1016/j.materresbull.2013.03.041
Publication status	Published - Aug 2013

Funding

This work is supported by Fatih University under BAP grant no P50021104-B . H. Sözeri thanks to Mr. C. Berk and Dr. Ö. Duygulu for taking SEM and TEM micrographs.

Funders	Funder number
Fatih Üniversitesi	P50021104-B

Keywords

A. Magnetic materials
B. Chemical synthesis
D. Electrical properties
D. Magnetic properties

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.materresbull.2013.03.041

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title = "Magnetic hydrogel with high coercivity",

abstract = "This study investigates the synthesis and characterization of polyacrylamide (PAAm) hydrogels containing magnetic BaFe12O 19 nanoparticles. Structural, electrical, and magnetic characterization of the gels have been performed with X-ray powder diffractometry, scanning electron microscopy, DC conductivity, magnetization and fluorescence spectroscopy techniques. The preparation and characterization of polyacrylamide (PAAm) hydrogels that contain 5 and 10 mg BaFe12O 19 (16 and 21 nm diameter) nanoparticles are described herein. It is seen from the fluorescence spectra that, nanoparticles surrounded to pyranine molecules so that some of pyranine molecules could not bound to the polymer strands. Electrical measurements show that presence of nanoparticles make the gel more homogeneous. Magnetization measurements reveal that hydrogels have hard magnetic properties with quite high coercivity of 4.2 kOe, which does not change with swelling. This feature makes these gels useful in applications as wastewater treatment if they are magnetized before use.",

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AU - Sözeri, H.

AU - Alveroǧlu, E.

AU - Kurtan, U.

AU - Şenel, M.

AU - Baykal, A.

PY - 2013/8

Y1 - 2013/8

N2 - This study investigates the synthesis and characterization of polyacrylamide (PAAm) hydrogels containing magnetic BaFe12O 19 nanoparticles. Structural, electrical, and magnetic characterization of the gels have been performed with X-ray powder diffractometry, scanning electron microscopy, DC conductivity, magnetization and fluorescence spectroscopy techniques. The preparation and characterization of polyacrylamide (PAAm) hydrogels that contain 5 and 10 mg BaFe12O 19 (16 and 21 nm diameter) nanoparticles are described herein. It is seen from the fluorescence spectra that, nanoparticles surrounded to pyranine molecules so that some of pyranine molecules could not bound to the polymer strands. Electrical measurements show that presence of nanoparticles make the gel more homogeneous. Magnetization measurements reveal that hydrogels have hard magnetic properties with quite high coercivity of 4.2 kOe, which does not change with swelling. This feature makes these gels useful in applications as wastewater treatment if they are magnetized before use.

AB - This study investigates the synthesis and characterization of polyacrylamide (PAAm) hydrogels containing magnetic BaFe12O 19 nanoparticles. Structural, electrical, and magnetic characterization of the gels have been performed with X-ray powder diffractometry, scanning electron microscopy, DC conductivity, magnetization and fluorescence spectroscopy techniques. The preparation and characterization of polyacrylamide (PAAm) hydrogels that contain 5 and 10 mg BaFe12O 19 (16 and 21 nm diameter) nanoparticles are described herein. It is seen from the fluorescence spectra that, nanoparticles surrounded to pyranine molecules so that some of pyranine molecules could not bound to the polymer strands. Electrical measurements show that presence of nanoparticles make the gel more homogeneous. Magnetization measurements reveal that hydrogels have hard magnetic properties with quite high coercivity of 4.2 kOe, which does not change with swelling. This feature makes these gels useful in applications as wastewater treatment if they are magnetized before use.

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KW - B. Chemical synthesis

KW - D. Electrical properties

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Magnetic hydrogel with high coercivity

Abstract

Funding

Keywords

UN SDGs

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