N-异丙基丙烯酰胺-丙烯酸钠共聚包覆四氧化三铁温敏磁性吸水树脂的制备与表征<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.020.007

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Abstract A temperature-sensitive, magnetic, and water-absorbent resin was prepared in this work by copolymerizing N-isopropyl acrylamide and sodium acrylate to envelop the pre-synthesized Fe₃O₄ nanoparticles, in which the Fe₃O₄ magnetic nanoparticles were prepared by coprecipitation method, and the envelopment was conducted by free-radical copolymerization in aqueous system. The obtained sample was characterized by X-ray diffraction(XRD), Fourier transform infrared spectrometer(FTIR)and thermal gravimetry(TG). Based on temperature sensitivity, swelling property, and deswelling property, it can be found that the resin possesses good water absorption and temperature sensitivity, as the low critical solution temperature (LCST) and swelling ratio were 50 ℃ and 116.74 g/g, respectively, and water loss in the fine coal was 77.90% at 70 ℃ within 30 min. When the sample was fully swelled by water and treated by ultrasonication for 30 min, only a small amount of Fe₃O₄ was removed, illuminating a relatively stable magnetic property.

Key words： sodium acrylate N-isopropylacrylamide Fe₃O₄ nanoparticles temperature-sensitive magnetic and water-absor-bent resin

Published: 25 October 2017 Online: 2018-05-05

CLC number:

TD94

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	Articles by authors
	CHEN Hangchao
	ZHANG Suhong
	LIU Shengyu
	ZHANG Zhiqiang
	GUO Jianying

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CHEN Hangchao,ZHANG Suhong,LIU Shengyu, et al. Preparation and Characterization of a Temperature-sensitive, Magnetic, Water-absorbent Resin Comprising Fe₃O₄ Nanoparticles and Poly(N-isopropylacrylamide-co-sodium acrylate) Envelope[J]. Materials Reports, 2017, 31(20): 30-34.

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https://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.020.007 OR https://www.mater-rep.com/EN/Y2017/V31/I20/30

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