以氯甲基化聚丙烯接枝苯乙烯纤维（chloramethylated polypropylene grafted styrene, CPP-g-St）为原料，采用胺基化和羧甲基化两步法反应，制备一种具有选择吸附性的亚胺基二乙酸螯合纤维（iminodiacetic acid chelate fiber, IDACF），并利用正交实验法研究了时间、浴比、温度、氯乙酸的用量对羧甲基化反应的影响。所制备的亚胺基二乙酸螯合纤维对Cu2+的螯合吸附容量为65.54mg·g-1，纤维对Cu2+的吸附容量是对Fe3+的10.52倍。采用元素分析（EA）、傅里叶红外光谱（FT-IR）、扫描电镜（SEM）、热重（TG）测试手段对纤维的结构和性能进行了表征。结果表明，经过两步反应后，亚氨基二乙酸基成功接枝到原料纤维表面，制备出的纤维具有良好的热稳定性。
The iminodiacetic acid chelate fiber(IDACF) which has a property of selective adsorption, was fabricated by amination and carboxylation using chloramethylated polypropylene grafted styrene fiber as raw material. Orthogonal experiment was adopted to study the effect of temperature, time, liquor ratio and the amount of chloroacetic acid on carboxylation reaction. The maximum adsorption capacity of iminodiacetic acid chelate fiber to Cu2+ is 65.54mg·g-1, which is 10.52 times of that of Fe3+. Elementary analysis(EA), Fourier transform infrared spectrum(FT-IR), scanning electron microscopy(SEM) and thermogrametry(TG) were used to characterize the structure and the properties of the iminodiacetic acid chelate fiber. The results show that iminodiacetic acid has been transformed to the raw fiber successfully after amination and carboxymethylation, and IDACF has good thermal stability.
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