摘要
研究了对 PAN 纤维的结构进行化学处理制得的改性阳离子交换纤维。红外光谱法分析和端基测定证明了这种纤维具有羧基、螫合结构和吸附金属离子的性质,通过改变pH 值可使纤维再生。测试了吸附量和吸附速率,并讨论了热力学性质。
This paper investigated the cation exchange fibers,which are produced by two stepsof chemical modification based on the structure of the polymer.It is proved by infrared spectrumanalysis and end-group testing that the fibers have carboxyl group and chelate structure.They havethe property of adsorbing metal cations and desorbing these cations by changing pH value.Afterdesorption the fibers can be reused.The adsorption quantity and rate are measured and the thermaland dynamic properties are discussed.
