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以聚丙烯腈(PAN)纳米纤维为基体,利用多氨基超支化聚合物(HBP-NH2)末端所具有的大量氨基官能团,采用戊二醛作为交联剂,将HBP-NH2接枝到PAN纳米纤维上制备了多氨基改性PAN纳米纤维(PANNH2)吸附剂,对PAN-NH2的结构与性能进行了表征。结果表明:HBP-NH2通过化学交联成功接枝到PAN纳米纤维的表面;PAN-NH2用于含重金属离子Cu2+的水体吸附,对Cu2+的吸附量可达28.02 mg/g;PAN-NH2纤维的氨基质量分数高达5.4%。
Using polyacrylonitrile (PAN) nanofibers as the matrix, a large amount of amino functional groups at the terminals of the polyamino hyperbranched polymer (HBP-NH2) were used, glutaraldehyde was used as a crosslinking agent, and HBP-NH2 was grafted to PAN nanocomposites Polyamino-modified PAN nanofibers (PANNH2) adsorbents were prepared on the fibers to characterize the structure and properties of PAN-NH2. The results showed that the surface of PAN nanofibers was successfully grafted onto HBP-NH2 by chemical cross-linking. PAN-NH2 was adsorbed on Cu2 + -containing water and the adsorption capacity of Cu2 + was 28.02 mg / g. Amino mass fraction of up to 5.4%.