迈向基于聚（丙烯）/铜纳米颗粒的定制杀生剂材料。

Toward Tailor-Made Biocide Materials Based on Poly(propylene)/Copper Nanoparticles.

作者信息

Palza Humberto, Gutiérrez Sebastian, Delgado Katherine, Salazar Oriana, Fuenzalida Victor, Avila Jonathan I, Figueroa Guillermo, Quijada Raúl

机构信息

Departamento de Ingeniería Química y Biotecnología, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Beauchef 850, Santiago, Chile; Centro para la Investigación Interdisciplinaria en Ciencias de los Materiales (CIMAT), Universidad de Chile, Av. Blanco Encalada 2008, Santiago, Chile.

出版信息

Macromol Rapid Commun. 2010 Mar 16;31(6):563-7. doi: 10.1002/marc.200900791. Epub 2010 Jan 5.

DOI:10.1002/marc.200900791

PMID:21590943

Abstract

A set of poly(propylene) composites containing different amounts of copper nanoparticles (CNP) were prepared by the melt mixed method and their antimicrobial behavior was quantitatively studied. The time needed to reduce the bacteria to 50% dropped to half with only 1 v/v % of CNP, compared to the polymer without CNP. After 4 h, this composite killed more than 99.9% of the bacteria. The biocide kinetics can be controlled by the nanofiller content; composites with CNP concentrations higher than 10 v/v % eliminated 99% of the bacteria in less than 2 h. X-ray photoelectron spectroscopy did not detect CNP at the surface, therefore the biocide behavior was attributed to copper in the bulk of the composite.

摘要

通过熔融混合法制备了一组含有不同含量铜纳米颗粒（CNP）的聚丙烯复合材料，并对其抗菌性能进行了定量研究。与不含CNP的聚合物相比，仅添加1 v/v%的CNP就能使细菌数量减少50%所需的时间减半。4小时后，这种复合材料杀灭了超过99.9%的细菌。杀菌剂动力学可由纳米填料含量控制；CNP浓度高于10 v/v%的复合材料在不到2小时内就能消除99%的细菌。X射线光电子能谱未在表面检测到CNP，因此杀菌行为归因于复合材料本体中的铜。