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将球形碱木素与环氧氯丙烷在高氯酸催化下反应生成3—氯—2—羟基丙基碱木素醚,随后用几种不同胺进行胺化,便可得到一系列碱木素阴离子交换剂。醚化反应的优选条件是:碱木素∶环氧氯丙烷∶高氯酸=1g∶2.0ml∶0.3ml,碱木素含水率为12—15％,反应在90℃进行4小时。这类产品可望利用造纸废液中的碱木素制备离子交换剂来处理污水。
The spherical alkali lignin and epichlorohydrin in the perchloric acid catalytic reaction of 3-chloro-2-hydroxypropyl alkali lignin ether, followed by several different amine amination, we can get a series of alkali lignin Anion exchangers. The preferred conditions for the etherification reaction are: lignin: epichlorohydrin: perchloric acid = 1g: 2.0ml: 0.3ml, alkali lignin moisture content: 12-15%, the reaction is carried out at 90 ° C for 4 hours. Such products are expected to make use of alkali lignin in waste papermaking wastewater to prepare ion exchangers.