HBP-NH2改性棉纤维吸附剂的制备及性能研究

摘要

A modified cotton fiber adsorbent was prepared successfully by grafting amino-terminated hyperbranched polymer (HBP-NH2) onto oxidized cotton ifbers. Its technology of preparation was optimized based on the adsorption quantity of Cd2+. The results showed that the modiifed cotton ifbers have the highest adsorption capacity up to Cd2+when 20 g/L HBP-NH2 reacted with oxidized cotton ifbers at 60℃and 11.03 pH value for 2 h. The adsorption quantity of Cd2+could reach 38.94 mg/g.%本研究通过氧化活化棉纤维的方法将端氨基超支化聚合物（HBP-NH2）接枝到棉纤维表面，成功制备了一种HBP-NH2改性棉纤维吸附剂，并以Cd2+的吸附量为依据对吸附剂的制备工艺进行了优化。研究表明HBP-NH2改性棉纤维吸附剂最佳制备工艺为：在60℃下，pH值为11.03的20 g/L HBP-NH2溶液中（浴比1∶50），接枝反应2 h，所制备的改性棉纤维对Cd2+的吸附量最高，可达38.94 mg/g。