辐射接枝制备聚丙烯纤维基海水提铀吸附剂
采用电子束预辐射接枝法将丙烯腈和丙烯酸接枝于聚丙烯(Polypropylene,PP)纤维上,并探讨了吸收剂量和反应温度对接枝率的影响。随后通过偕胺肟化反应制备出含偕胺肟基和羧基的PP纤维吸附剂。红外光谱数据表明,丙烯腈和丙烯酸成功接枝到PP纤维上,偕胺肟化反应将腈基转化为偕胺肟基,同时对改性前后PP纤维的表面形貌和热性能进行了表征。厦门海域真实海水吸附性能测试结果表明,所制备的PP纤维吸附剂铀吸附容量最高可达到0.81mg·g^-1(吸附时间为68d),PP纤维吸附剂的铀吸附容量与其接枝率和偕胺肟基密度不呈正相关。...
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Published in | 核技术 Vol. 40; no. 5; pp. 22 - 28 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
上海科技大学物质科学与技术学院 上海 200031
2017
中国科学院上海应用物理研究所 嘉定园区 上海 201800%中国科学院上海应用物理研究所 嘉定园区 上海 201800 中国科学院大学 北京 100049%中国科学院上海应用物理研究所 嘉定园区 上海 201800 |
Subjects | |
Online Access | Get full text |
ISSN | 0253-3219 |
DOI | 10.11889/j.0253-3219.2017.hjs.40.050301 |
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Summary: | 采用电子束预辐射接枝法将丙烯腈和丙烯酸接枝于聚丙烯(Polypropylene,PP)纤维上,并探讨了吸收剂量和反应温度对接枝率的影响。随后通过偕胺肟化反应制备出含偕胺肟基和羧基的PP纤维吸附剂。红外光谱数据表明,丙烯腈和丙烯酸成功接枝到PP纤维上,偕胺肟化反应将腈基转化为偕胺肟基,同时对改性前后PP纤维的表面形貌和热性能进行了表征。厦门海域真实海水吸附性能测试结果表明,所制备的PP纤维吸附剂铀吸附容量最高可达到0.81mg·g^-1(吸附时间为68d),PP纤维吸附剂的铀吸附容量与其接枝率和偕胺肟基密度不呈正相关。 |
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Bibliography: | LI Rong1 PANG Lijuan1,2 ZHANG Mingxing1,2 WANG Minglei1,2 ZHANG Maojiang1,2 LIU Xiyan1 MA Hongjuan1 WANG Mouhua1 WU Guozhong1,3 1 (Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus, Shanghai 201800, China) 2(University of Chinese Academy of Sciences, Beijing 100049, China) 3(School of Physical Science and Technology, ShanghaiTeeh University, Shanghai 200031, China) Polypropylene fibers, Amidoxime group, Acrylic acid, Uranyl ions, Extraction of uranium from seawater Background: A recent estimate indicates that the land-based uranium sources are only able to last for about a century. Consequently, it is imperative to exploit new uranium resources with an economically feasible method. The uranium dissolved in seawater is about 4.5×10^9 t, much larger than the terrestrial sources, even though its concentration in seawater is low (about 3.3μg·L^-1). Hence, it is essential to develop techniques for mining uranium from seawater in order to satisfy the demand for uranium for nuclear pow |
ISSN: | 0253-3219 |
DOI: | 10.11889/j.0253-3219.2017.hjs.40.050301 |