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采用常规加热法分别得到聚合松香接枝苏氨酸,酒石酸和柠檬酸的功能基化合物,并讨论了其合成条件,对软化点和红外进行了分析.聚合松香的接枝化合物酸值增加,软化点降低,溶解度较大,还不适合做功能基高分子,需增大聚合松香接枝功能基化合物的分子量和交联度.酸性强弱顺序与接枝的小分子酸酸性强弱相同,接枝酒石酸和柠檬酸化合物在有机溶剂中易溶,水中难溶.接枝苏氨酸化合物可以吸附铜铁钙三种金属离子.
The functional group compounds of the graft rosin, thartaric acid and citric acid were respectively obtained by conventional heating method and the synthesis conditions were discussed.The softening point and infrared were analyzed.The acid value of the graft polymer of polymerized rosin increased and softened Lower point, higher solubility, is not suitable for functional-based polymer, the need to increase the molecular weight and crosslinking degree of polymerization rosin-grafted functional group of the compound acid strength and acidity of the small molecule acid grafted the same strength, then Branches of tartaric acid and citric acid compounds are soluble in organic solvents and hardly soluble in water. Grafting threonine compounds can adsorb copper, iron and calcium three metal ions.