温敏互穿网络水凝胶/改性膨润土复合吸水保水材料的制备及表征

doi:10.11896/cldb.19050144

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Abstract Thermosensitive interpenetrating double-network hydrogel/modified bentonite composite water absorbent and retention material was synthesized by modified bentonite, 2-acrylamido-2-methylpropane sulfonic acid, acrylamide, thermosensive macromonomer raw materials and N,N′-methylenebis(acrylamide) as crosslinker through aqueous solution interpenetrating double-network polymerization method. The prepared samples were characterized by X-ray diffraction(XRD), Fourier transform infrared spectrometer(FTIR), thermal gravimetry(TG), field emission scanning electron microscopy(SEM), and differential scanning calorimetric (DSC). The swelling property, temperature sensitivity, deswelling property, oscillatory swelling/deswelling property and tensile strength of the composite water absorbent and retention material were studied. The results show that the absorbancy of the composite water absorbent DNB5 and retention material to deionized water and 0.9% NaCl solution is about 20.59 g/g and 7.92 g/g respectively at 20 ℃. The LCST, equilibrium swelling ratio and tensile strength of the composite water absorbent and retention material are enhanced with the increase in dosage of modified bentonite or AM of second-network. It can find that the composite water absorbent and retention material possesses good water absorption, water retention, remarkable thermosensitivity, controllable equilibrium swelling/deswelling behavior and higher mechanical property.

Key words： thermosensitive macromonomer modified bentonite interpenetrating double-network water absorbent and retention material

Published: 29 May 2020

CLC number:

TQ322.4

Fund:This work was financially supported by the Natural Science Foundation of Guizhou Province (J20181122, J20191252), the National Natural Science Foundation of China (21464005), the Youth Science and Technology Talent Development Project of the Education Department of Guizhou Province (KY2018263).

About author:: Yu Wang received his Ph.D. degree in polymer che-mistry and physics from Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences in 2011. Currently he is a professor at Guizhou Education University. His research interests focus on the design and synthesis of novel stimuli-responsive nanocomposite hydrogels, solution polymer materials and their applications in environmental catalysis and water treatment. He has published more than 40 journal papers, applied 9 national invention patents and 3 of them were authorized.

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	WANG Yu
	ZHAO Jun
	REN Junpeng
	LI Benxiu
	ZHOU Jinkang
	LI Xiaoping

Cite this article:

WANG Yu,ZHAO Jun,REN Junpeng, et al. Preparation and Characterization of Thermosensitive Interpenetrating Double-Network Hydrogel/Modified Bentonite Composite Water Absorbent and Retention Material[J]. Materials Reports, 2020, 34(12): 12178-12184.

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http://www.mater-rep.com/EN/10.11896/cldb.19050144 OR http://www.mater-rep.com/EN/Y2020/V34/I12/12178

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