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An eco‐friendly method based on the self‐glue effect of keratins for preparing Fe 3 O 4 ‐coated wool
Author(s) -
Zhao Zhenyun,
Song Chi,
Zhou Jing,
Hu Ruimin,
Xiao Hang,
Liu Yiping,
Lu Ming
Publication year - 2020
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.49179
Subject(s) - materials science , fourier transform infrared spectroscopy , wool , coating , raw material , nanometre , chemical engineering , scanning electron microscope , composite material , polymer chemistry , organic chemistry , chemistry , engineering
Although coating technology and in‐situ synthesis have been widely applied to produce Fe 3 O 4 NPs‐containing composite materials, there still exist potential risks to the environment. Herein, an eco‐friendly preparation of Fe 3 O 4 nanoparticles (FNPs)‐coated wool felt is proposed based on the self‐glue effect of wool keratins in the NaHSO 3 /urea solution. It avoids the use of coating agents, and also the commercially available FNPs are directly utilized as raw materials, both making the residual FNPs completely recyclable. The resulting FNPs‐coated wool felt shows high magnetization (23.54 emu g −1 ) and excellent microwave‐assisted heating properties (the temperature rise is about 40°C after 10 min). The results of EDS‐SEM (energy dispersive spectrometer‐scanning electron microscope), loud amount (%), crease recovery angle (CRA), Fourier transform infrared (FTIR) spectrometer and X‐ray diffraction (XRD) prove that the dramatical swelling and the recoagulation of superficial keratins of wool fibers are the mechanism of the self‐glue effect.