Antibacterial Thermoplastic Polyurethane Electrospun Fiber Mats Prepared by 3-Aminopropyltriethoxysilane-assisted Adsorption of Ag Nanoparticles

Yu-man Liu; Qiang Li; Huan-huan Liu; Hui-hui Cheng; Jian Yu; Zhao-xia Guo

doi:10.1007/s10118-017-1928-3

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Antibacterial Thermoplastic Polyurethane Electrospun Fiber Mats Prepared by 3-Aminopropyltriethoxysilane-assisted Adsorption of Ag Nanoparticles

Papers | Updated：2021-02-18

- Antibacterial Thermoplastic Polyurethane Electrospun Fiber Mats Prepared by 3-Aminopropyltriethoxysilane-assisted Adsorption of Ag Nanoparticles
- Chinese Journal of Polymer Science Vol. 35, Issue 6, Pages: 713-720(2017)
- Affiliations：
  
  Key Laboratory of Advanced Materials (Ministry of Education), Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
- Author bio：
  
  Qiang Li (李强), E-mail: liqiang@mail.tsinghua.edu.cn
  Zhao-xia Guo (郭朝霞), E-mail: guozx@mail.tsinghua.edu.cn
- Funds：
- DOI：10.1007/s10118-017-1928-3
  CLC：
- Received：15 September 2016，
  
  Revised：2016-12-9，
  
  Accepted：15 December 2016，
  
  Published：05 June 2017
- Accepted：
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Yu-man Liu, Qiang Li, Huan-huan Liu, et al. Antibacterial Thermoplastic Polyurethane Electrospun Fiber Mats Prepared by 3-Aminopropyltriethoxysilane-assisted Adsorption of Ag Nanoparticles[J]. Chinese Journal of Polymer Science, 2017, 35(6): 713-720.
DOI：

Yu-man Liu, Qiang Li, Huan-huan Liu, et al. Antibacterial Thermoplastic Polyurethane Electrospun Fiber Mats Prepared by 3-Aminopropyltriethoxysilane-assisted Adsorption of Ag Nanoparticles[J]. Chinese Journal of Polymer Science, 2017, 35(6): 713-720. DOI： 10.1007/s10118-017-1928-3.

摘要

Abstract

Antibacterial thermoplastic polyurethane (TPU) electrospun fiber mats were prepared by adsorption of Ag nanoparticles (Ag NPs) onto TPU/3-aminopropyltriethoxysilane (APS) co-electrospun fiber mats from silver sol. The use of APS can functionalize TPU fibers with amino groups

facilitating the adsorption of Ag NPs. The effects of pH of silver sol and APS content on Ag NP adsorption and antibacterial activity were investigated. Ag NP adsorption was evidenced by TEM

XPS and TGA. Significant Ag NP adsorption occurred at pH = 3-5. The main driving force for Ag NP adsorption is electrostatic interaction between --NH

of the fibers and --COO

derived from the -COOH group capped on the surfaces of Ag NPs. The antibacterial activity of the Ag NP-decorated TPU/APS fiber mats was investigated using both gram-negative

Escherichia coli

and gram-positive

Bacillus subtilis

. The antibacterial rate increases with increasing APS content up to 5% where the antibacterial rates against both types of bacteria are over 99.9%.

关键词

Keywords

references

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