| 聚乙烯醇/聚丙烯酸/腐植酸钠高吸水性树脂的制备及溶胀行为 |
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| 引用本文： | 华水波,王爱勤.聚乙烯醇/聚丙烯酸/腐植酸钠高吸水性树脂的制备及溶胀行为[J].腐植酸,2009(6):25-29. |
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| 作者姓名： | 华水波 王爱勤 |
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| 作者单位： | 1. 中国科学院兰州化学物理研究所,兰州,730000;中国科学院研究生院,北京,100049
2. 中国科学院兰州化学物理研究所,兰州,730000 |
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| 基金项目： | 国家863项目，中国科学院"西部行动"计划项目 |
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| 摘 要： | 以N,N＇-亚甲基双丙烯酰胺为交联剂、过硫酸铵为引发剂,采用水溶液聚合法合成了聚乙烯醇/聚丙烯酸/腐植酸钠多功能高吸水性树脂。研究了聚乙烯醇和腐植酸钠含量对树脂吸水倍率的影响,同时考察了树脂的吸水速率、溶液pH值对吸水倍率的影响及反复溶胀性能。结果表明,在体系中引入廉价的腐植酸钠,能够显著提高树脂的吸水能力。在腐植酸钠含量为10wt%时,树脂具有最高的吸水倍率,其吸蒸馏水和0.9wt%NaCl溶液分别达到1020g/g和80g/g。
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| 关 键 词： | 聚乙烯醇 腐植酸钠 高吸水性树脂 吸水倍率 溶胀行为 |
Preparation and Swelling Behaviors of PVA/PAA/SH Superabsorbents |
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| Authors: | Hua Shuibo Wang Aiqin |
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| Affiliation: | Hua Shuibo 1,2,Wang Aiqin 1 (1 Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou,730000 2 Graduate University of the Chinese Academy of Sciences,Beijing,100049) |
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| Abstract: | In this paper,poly(vinyl alcohol)/poly(acrylic acid)/sodium humate superabsorbents were prepared by aque- ous solution polymerization of acrylic acid using N,N ' -methylenebisacrylamide as a crosslinker and ammonium persulfate as an initiator in the presence of poly(vinyl alcohol) (PVA) and sodium humate (SH). The effects of PVA content and SH content on the water absorbency were evaluated. The swelling rate,pH of external solutions on water absor- bency and reswelling ability of the superabsorbents were st... |
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| Keywords: | poly(vinyl alcohol) sodium humate superabsorbent water absorbency swelling behavior |
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