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紫外(UV)光聚合法合成高吸水性树脂,对比于传统的聚合方法具有工艺过程简单,反应时间短,易操作,可在常温下进行以及无三废污染等优点。本文以丙烯酸、淀粉和聚乙烯醇为原料,采用紫外光引发聚合方法制备了互穿网络耐盐性高吸水树脂。研究了丙烯酸中和度、聚乙烯醇(PVA)和淀粉用量、辐照时间等因素对高吸水树脂吸液性能的影响,用红外光谱和扫描电镜表征了样品。在最佳试验条件下聚合制得的高吸水树脂,其吸去离子水率为2235g/g,吸生理盐水率(0.9%NaCl水溶液)为148g/g。
Ultraviolet (UV) photopolymerization of superabsorbent polymer, compared with the traditional polymerization method has the advantages of simple process, short reaction time, easy operation, can be carried out at room temperature and no waste pollution. In this paper, acrylic acid, starch and polyvinyl alcohol as raw materials, using UV-induced polymerization method to prepare interpenetrating network of salt-tolerant superabsorbent. The effects of neutralization degree of acrylic acid, polyvinyl alcohol (PVA) and starch dosage, irradiation time and other factors on the liquid absorption properties of superabsorbent resin were studied. The samples were characterized by infrared spectroscopy and scanning electron microscopy. The superabsorbent polymer prepared by polymerization under the best experimental conditions had the capacity of absorbing deionized water to 2235g / g and the rate of absorbing saline solution (0.9% NaCl aqueous solution) to 148g / g.