Enhanced Antibacterial Activity of Silver-Coated Kapok Fibers Through Dopamine Functionalization

作者：Wang Runkai; Shin Chul Ho; Park Siho; Cui Longzhe; Kim Daeik; Park Joon Seok; Ryu Moonhee^*

来源：Water, Air, and Soil Pollution, 2015, 226(1): 2241.

DOI：10.1007/s11270-014-2241-1

• Kapok fiber
• Silver
• Dopamine
• Functional group
• Antibacterial capacity

As a biopolymer-modified building block, a poly-dopamine layer can be utilized with a wide range of inorganic and organic materials for an adsorptive and microbial remediation. In this study, dopamine (DOPA) was used as a structural platform to bind silver onto the surface of kapok fibers, and a composite of surface-modified kapok fibers coated with DOPA along with silver were successfully manufactured. After a silver-coating process, a very strong antibacterial property was exhibited against Staphylococcus aureus with a high antibacterial efficiency, over 99 %, which could last for 48 h in peptone water. Enumeration determination was carried out in a spread plate method. For a comparative study, the antibacterial activity of raw kapok fibers and chemically enhanced kapok fibers with DOPA and silver was also evaluated. The results indicated that the chemically enhanced kapok fibers were very useful in controlling a microbial activity on a surface environment.

• 单位
  中南民族大学