董猛 张德锁 林红 陈宇岳

摘要：为了有效控制制备纳米银，本文对端氨基超支化聚合物（HBP-NH2）进行了接枝改性，制备了“核-壳”结构的改性超支化聚合物（MHBP-OH）。利用其在水溶液中制备了纳米银，并将其接枝到棉织物中原位控制生成纳米银，以实现对棉织物的抗菌整理。对生成的纳米银进行了表征，并对原位生成纳米银整理的棉织物进行了测试。结果表明：水溶液中控制生成的纳米银平均粒径为3.82 nm，并具有优异的稳定性，棉织物中原位生成的纳米银粒径在10 nm左右，在棉纤维上分布均匀，当银含量为146.26 mg/kg时，整理后的棉织物对金黄色葡萄球菌和大肠杆菌的抑菌率分别达到99.76%和99.62%，30次洗涤后，银含量仍保持在126.61 mg/kg。

关键词： 改性超支化聚合物；纳米银；棉织物；原位生成；抗菌整理

中图分类号：TS195.58 文献标志码：A

Preparation of Silver Nanoparticles by MHBP-OH and Its Application to the Antibacterial Finishing of Cotton Fabric by In-Situ Approach

Abstract： For the controllable preparation of nano-silver effectively， in this paper， modified aminoterminated hyperbranched polymer（MHBP-OH） with core-shell structures was prepared by grafting line polymers on the amino-terminated hyperbranched polymer（HBP-NH2）. The MHBP-OH was applied to prepare nano-silver in aqueous solution and graft in cotton fiber for in-situ fabricating nano-silver to realize antibacterial finishing. The generated silver nanoparticles were characterized and the corresponding analysis of performance were given on the treated cotton fabric. The results indicated that average grain diameter of nano-silver generated in aqueous solution was 3.82 nm with excellent stability. The nano-silvers generated in cotton fibers were well distributed and their size was about 10 nm. When the silver content of treated cotton fabric was 146.26 mg/kg， the bacterial reduction rates against S.aureus and E.coli were 99.76% and 99.62% respectively. The silver content still kept in 126.61 mg/kg even suffering laundering after 30 times.

Key words： modified hyperbranched polymer； nano-silver； cotton fabric； in-situ generation； antibacterial finishing

纳米银由于其安全、无毒、高效的抗菌性能，常被用作抗菌整理剂，并且其抗菌性能持久稳定，适应性强，不易产生抗药性，已在无机抗菌整理剂的应用中占主导地位。目前，在有关纳米银的制备和应用中均存在许多问题，如纳米银的粒径不易控制，纳米银分散液储存过程中易团聚。利用纳米银整理剂整理织物时又存在分布不匀，整理工艺过程中纳米银团聚，整理后纳米银与织物结合牢度差，以及整理过程中使用的助剂对织物、人体和环境具有潜在危害等问题。因此，研究开发高效、绿色的纳米银制备和应用技术具有重要的意义。

本研究通过对端氨基超支化聚合物（HBP-NH2）进行接枝改性，制备了具有“核-壳”结构的改性端羟基超支化合物（MHBP-OH）。……