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【答案】应助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
感谢参与，应助指数 +1
523156717: 金币+20, ★★★★★最佳答案 2017-05-27 17:56:57
sunshan4379: LS-EPI+1, 感谢应助！ 2017-05-27 20:07:47
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20171203457066
Title: Preparation and characterization of P (AM-co-AA) for capturing and encapsulating radioactive aerosols
Authors: Wu, Hui-Min1, 2 Email author liyintao@swust.edu.cn; Li, Yin-Tao1; Zhang, Hui-Yan1, 2; Zhou, Yuan-Lin1 Email author zhouyuanlin@swust.edu.cn
Author affiliation: 1 State Key Laboratory Cultivation Base for Nonmetal Composite and Functional Material, Southwest University of Science and Technology, Mianyang; Sichuan; 621010, China
2 College of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang; Sichuan; 621010, China
Corresponding author: Zhou, Yuan-Lin (zhouyuanlin@swust.edu.cn)
Source title: Jingxi Huagong/Fine Chemicals
Abbreviated source title: Jingxi Huagong
Volume: 34
Issue: 1
Issue date: January 15, 2017
Publication year: 2017
Pages: 115-120
Language: Chinese
ISSN: 10035214
CODEN: JIHUFJ
Document type: Journal article (JA)
Publisher: Fine Chemicals
Abstract: A kind of water-soluble resin was synthesized based on acrylamide (AM) and acrylic acid(AA) via free radical copolymerization in aqueous solution to remove radioactive aerosols. The structures of the resin were characterized by Fourier transform infrared spectroscopy(FTIR), nuclear magnetic resonance (NMR) and scanning electron microscopy (SEM). Their properties were investigated by means of thermogravimetric analysis (TGA), surface tension and contact angle measurement. The results show that the resulting copolymer P (AM-co-AA) exhibits porous crosslinked networks in water phase, and the structure morphology has correlation with the molar ratio of monomer. When n(AA):n(AM) is 1:9, the prepared pressing agent is easier to combine with aerosol dust. Through surface tension analysis, it is found that the pressing agent with different monomer ratio can affect their wettability for aerosol dust. When n(AA):n(AM) is 3:7, the pressing agent has a minimum contact angle of 64.3° with aerosols. The spray atomization experiment shows that the pressing agent with n(AA):n(AM)=1:9 can accelerate settlement of aerosols and has an obviously suppressing effect. Compared with the natural sedimentation method, this method makes the time that the concentration of aerosol dust reaches half the original value reduce from 9.4 min to 2.0 min. © 2017, Editorial Office of FINE CHEMICALS. All right reserved.
Number of references: 14
Main heading: Aerosols
Controlled terms: Acrylic monomers - Ascorbic acid - Contact angle - Copolymerization - Dust - Fourier transform infrared spectroscopy - Free radicals - Hydrogels - Monomers - Nuclear magnetic resonance - Nuclear magnetic resonance spectroscopy - Radioactivity - Resins - Scanning electron microscopy - Solutions - Surface tension - Thermogravimetric analysis
Uncontrolled terms: Cross-linked networks - Free radical copolymerization - Monomer ratio - Nuclear magnetic resonance(NMR) - Radioactive aerosols - Spray atomization - Suppressing effects - Tension analysis
Classification code: 451.1Air Pollution Sources - 622Radioactive Materials - 801Chemistry - 804Chemical Products Generally - 804.1Organic Compounds - 815.1.1Organic Polymers - 815.2Polymerization - 931.2Physical Properties of Gases, Liquids and Solids
Numerical data indexing: Time 5.64e+02s to 1.20e+02s
DOI: 10.13550/j.jxhg.2017.01.019
Database: Compendex
Compilation and indexing terms, © 2017 Elsevier Inc. |
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