大孔交联酰胺类聚合物对苯酚氢键吸附机理的研究

大孔交联酰胺类聚合物是一类同时能提供氢键的给体(—NH—)和氢键的受体(—C O)的功能高分子材料。将D392乙酰化制得大孔交联聚(N-对乙烯基苄基乙酰胺)(PS-CH2NHCOCH3),并对其化学结构进行表征;测定了它在非水体系中对苯酚的吸附等温线,计算出不同吸附量时对应的吸附焓。结果表明,合成的大孔交联PS-CH2NHCOCH3在环己烷中对苯酚的吸附量大,吸附选择性高,排除了吸附过程的疏水作用及范德华力的影响因素,证明其吸附机理为氢键吸附。

Study on Adsorption Mechanism of Phenol onto Macroporous Crosslinked Poly(p-vinylbenzylamide) Resin

Macroporous crosslinked amide resin,which contains both hydrogen acceptor and hydrogen donator,is a kind of functional polymer.Macroporous crosslinked poly(p-vinylbenzylamide) resin was synthesized by acetylation of D392 and characterized by element analysis and FT-IR.The adsorption isotherm lines of phenol onto the resin from non-aqueous system were measured,and the differential adsorptive heats for varied adsorption capacities(ΔHm) were calculated.The results indicated that the adsorption mechanism of phenol onto the resin from cyclohexane is based on hydrogen bonding.