Superparamagnetic, High Magnetic α-Fe & α″-Fe16N2 Mixture Prepared from Inverse Suspension-Polymerized Fe3O4@polyaniline Composite

Oleic acid (OA)-modified Fe3O4 nanoparticles were successfully covered with polyanilines (PANIs) via inverse suspension polymerization in accordance with SEM and TEM micrographs. The obtained nanoparticles were able to develop into a ferrite (α-Fe) and α...

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Main Authors:	Yen-Zen Wang, Yu-Wei Cheng, Lin-Chia Ho, Wen-Yao Huang, Ko-Shan Ho, Yu-Ting Syu
Format:	Article
Language:	English
Published:	MDPI AG 2021-07-01
Series:	Polymers
Subjects:	polyaniline ferrite α″-Fe<sub>16</sub>N<sub>2</sub> superparamagnetic inverse suspension polymerization
Online Access:	https://www.mdpi.com/2073-4360/13/14/2380

id	doaj-5d2237b91fae4e3baf8d1b65ab544339
record_format	Article
spelling	doaj-5d2237b91fae4e3baf8d1b65ab5443392021-07-23T14:02:48ZengMDPI AGPolymers2073-43602021-07-01132380238010.3390/polym13142380Superparamagnetic, High Magnetic α-Fe & α″-Fe<sub>16</sub>N<sub>2</sub> Mixture Prepared from Inverse Suspension-Polymerized Fe<sub>3</sub>O<sub>4</sub>@polyaniline CompositeYen-Zen Wang0Yu-Wei Cheng1Lin-Chia Ho2Wen-Yao Huang3Ko-Shan Ho4Yu-Ting Syu5Department of Chemical and Materials Engineering, National Yu-Lin University of Science & Technology, Yun-Lin 640301, TaiwanDepartment of Chemical Engineering, Ming Chi University of Technology, New Taipei City 24301, TaiwanNational Defense Medical Center, 161 Sec. 6 Minquan E. Rd., Neihu District, Taipei City 11490, TaiwanDepartment of Photonics, National Sun Yat-sen University, 70 Lienhai Rd., Kaohsiung 80424, TaiwanDepartment of Chemical and Materials Engineering, National Kaohsiung University of Science & Technology, 415 Chien-Kuo Rd., Kaohsiung 80782, TaiwanDepartment of Chemical and Materials Engineering, National Kaohsiung University of Science & Technology, 415 Chien-Kuo Rd., Kaohsiung 80782, TaiwanOleic acid (OA)-modified Fe<sub>3</sub>O<sub>4</sub> nanoparticles were successfully covered with polyanilines (PANIs) via inverse suspension polymerization in accordance with SEM and TEM micrographs. The obtained nanoparticles were able to develop into a ferrite (α-Fe) and α″-Fe<sub>16</sub>N<sub>2</sub> mixture with a superparamagnetic property and high saturated magnetization (SM) of 245 emu g<sup>−1</sup> at 950 °C calcination under the protection of carbonization materials (calcined PANI) and other iron-compounds (α″-Fe<sub>16</sub>N<sub>2</sub>). The SM of the calcined iron-composites slightly decreases to 232 emu g<sup>−1</sup> after staying in the open air for 3 months. The calcined mixture composite can be ground into homogeneous powders without the segregation of the iron and carbon phases in the mortar without significantly losing magnetic activities.https://www.mdpi.com/2073-4360/13/14/2380polyanilineferriteα″-Fe<sub>16</sub>N<sub>2</sub>superparamagneticinverse suspension polymerization
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Yen-Zen Wang Yu-Wei Cheng Lin-Chia Ho Wen-Yao Huang Ko-Shan Ho Yu-Ting Syu
spellingShingle	Yen-Zen Wang Yu-Wei Cheng Lin-Chia Ho Wen-Yao Huang Ko-Shan Ho Yu-Ting Syu Superparamagnetic, High Magnetic α-Fe & α″-Fe<sub>16</sub>N<sub>2</sub> Mixture Prepared from Inverse Suspension-Polymerized Fe<sub>3</sub>O<sub>4</sub>@polyaniline Composite Polymers polyaniline ferrite α″-Fe<sub>16</sub>N<sub>2</sub> superparamagnetic inverse suspension polymerization
author_facet	Yen-Zen Wang Yu-Wei Cheng Lin-Chia Ho Wen-Yao Huang Ko-Shan Ho Yu-Ting Syu
author_sort	Yen-Zen Wang
title	Superparamagnetic, High Magnetic α-Fe & α″-Fe<sub>16</sub>N<sub>2</sub> Mixture Prepared from Inverse Suspension-Polymerized Fe<sub>3</sub>O<sub>4</sub>@polyaniline Composite
title_short	Superparamagnetic, High Magnetic α-Fe & α″-Fe<sub>16</sub>N<sub>2</sub> Mixture Prepared from Inverse Suspension-Polymerized Fe<sub>3</sub>O<sub>4</sub>@polyaniline Composite
title_full	Superparamagnetic, High Magnetic α-Fe & α″-Fe<sub>16</sub>N<sub>2</sub> Mixture Prepared from Inverse Suspension-Polymerized Fe<sub>3</sub>O<sub>4</sub>@polyaniline Composite
title_fullStr	Superparamagnetic, High Magnetic α-Fe & α″-Fe<sub>16</sub>N<sub>2</sub> Mixture Prepared from Inverse Suspension-Polymerized Fe<sub>3</sub>O<sub>4</sub>@polyaniline Composite
title_full_unstemmed	Superparamagnetic, High Magnetic α-Fe & α″-Fe<sub>16</sub>N<sub>2</sub> Mixture Prepared from Inverse Suspension-Polymerized Fe<sub>3</sub>O<sub>4</sub>@polyaniline Composite
title_sort	superparamagnetic, high magnetic α-fe & α″-fe<sub>16</sub>n<sub>2</sub> mixture prepared from inverse suspension-polymerized fe<sub>3</sub>o<sub>4</sub>@polyaniline composite
publisher	MDPI AG
series	Polymers
issn	2073-4360
publishDate	2021-07-01
description	Oleic acid (OA)-modified Fe<sub>3</sub>O<sub>4</sub> nanoparticles were successfully covered with polyanilines (PANIs) via inverse suspension polymerization in accordance with SEM and TEM micrographs. The obtained nanoparticles were able to develop into a ferrite (α-Fe) and α″-Fe<sub>16</sub>N<sub>2</sub> mixture with a superparamagnetic property and high saturated magnetization (SM) of 245 emu g<sup>−1</sup> at 950 °C calcination under the protection of carbonization materials (calcined PANI) and other iron-compounds (α″-Fe<sub>16</sub>N<sub>2</sub>). The SM of the calcined iron-composites slightly decreases to 232 emu g<sup>−1</sup> after staying in the open air for 3 months. The calcined mixture composite can be ground into homogeneous powders without the segregation of the iron and carbon phases in the mortar without significantly losing magnetic activities.
topic	polyaniline ferrite α″-Fe<sub>16</sub>N<sub>2</sub> superparamagnetic inverse suspension polymerization
url	https://www.mdpi.com/2073-4360/13/14/2380
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Superparamagnetic, High Magnetic α-Fe & α″-Fe<sub>16</sub>N<sub>2</sub> Mixture Prepared from Inverse Suspension-Polymerized Fe<sub>3</sub>O<sub>4</sub>@polyaniline Composite

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