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分别以甲胺、二甲胺和三甲胺参与Friedel-Crafts后交联反应,成功制备了胺基修饰的超高交联聚苯乙烯吸附树脂LY-1、LY-2和LY-3。物化特征研究表明:三者都符合纳米吸附高分子材料特征。吸附研究表明,水体系中3种树脂对苯酚的吸附性能均优于苯胺,在相同平衡浓度下,吸附量大小顺序都为:LY-1>LY-2>LY-3。苯酚(苯胺)在3种树脂上的吸附焓ΔH均小于零且绝对值都小于40kJ/mol,以物理吸附为主。自由能变ΔG和吸附熵变ΔS都为负值,吸附是自发过程,且吸附的ΔH、ΔG、ΔS值都随胺基含量增加而减小。
Amine, dimethylamine and trimethylamine were respectively involved in the Friedel-Crafts post-crosslinking reaction to prepare the LY-1, LY-2, LY-3 and LY-3. Physical and chemical characteristics of the study showed that: three are in line with nano-adsorption polymer material characteristics. Adsorption studies showed that the adsorption capacity of three kinds of resins in water system was better than that of aniline. Under the same equilibrium concentration, the order of adsorption amount was LY-1> LY-2> LY-3. The adsorption enthalpy ΔH of phenol (aniline) on the three kinds of resins were all less than zero and their absolute values were all less than 40 kJ / mol, which were dominated by physical adsorption. Free energy change ΔG and adsorption entropy change ΔS are negative, adsorption is a spontaneous process, and the adsorption of ΔH, ΔG, ΔS value decreases with the increase of the content of amine.