一种耐盐保水剂的制备及其性能研究  

Study on Preparation and Properties of Salt Tolerant Acrylic Acid Absorbent Resin

作　　者：陈日清[1] 储富祥[1] 金立维[1] 王春鹏[1] 蒋煜[1] 裘梅琴[1] 

机构地区：[1]中国林业科学研究院林产化学工业研究所,江苏南京210042

出　　处：《南京林业大学学报（自然科学版）》2006年第2期33-37,共5页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：国家高技术研究发展计划(2001AA242043);国家"十五"科技攻关项目(2002BA517A-09-05)

摘　　要：采用水溶液聚合法,以N,N′-亚甲基双丙烯酰胺为交联剂,过硫酸铵为氧化还原引发剂,乙二胺四乙酸为螯合添加剂,丙烯酰胺和部分中和的丙烯酸为单体,制成用于荒漠化防治的交联型耐盐高吸水树脂,研究了交联剂、螯合剂、氧化还原引发剂及中和度等对该高吸水树脂的吸水性和吸盐性的影响。结果表明:使用EDTA作为螯合添加剂,树脂的吸收率有明显提高,吸水(自来水)率和吸盐率分别达到900 g/g和190 g/g以上;改变交联剂、氧化-还原引发剂用量能提高树脂的吸盐性;中和度对树脂的吸水性有一定影响,但对吸盐性没有明显影响。Super absorbent resins with good salt tolerance were synthesized by using solution polymerization of acrylic acid in the presence of a crosslinking agent, a redox initiator and a chelant. The influence of the amount of the crosslinking agent, chelant and redox initiator as well as the neutralized ratio of acrylic acid on the absorption capacity was studied. It was found that the introduction of chelant （ehylenediaminetetraacetic acid） promoted significantly the absorption for the salt solution. The resulted resins showed an absorption capacity of more than 900 g/g for tap water and 190 g/gin case of 0.90/00 NaCl solution respectively. It was also demonstrated that the amount of the crosslinking agent and redox initiator influenced to a certain extent the absorption resins for 0.90/00 NaCl solution while the neutralized degree of acrylic acid had no significant impact on the absorption capacity.

关 键 词：耐盐性 高吸水树脂 EDTA 溶液聚合 

分 类 号：TQ326.4[化学工程—合成树脂塑料工业]