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Molecules 2017, 22(5), 721; doi:10.3390/molecules22050721

One-Step Synthesis of Silver Nanoparticles on Polydopamine-Coated Sericin/Polyvinyl Alcohol Composite Films for Potential Antimicrobial Applications

1
College of Biotechnology, Southwest University, Beibei, Chongqing 400715, China
2
State Key Laboratory of Silkworm Genome Biology, Southwest University, Beibei, Chongqing 400715, China
3
College of Pharmaceutical Sciences, Southwest University, Beibei, Chongqing 400715, China
*
Author to whom correspondence should be addressed.
Academic Editor: Derek J. McPhee
Received: 25 March 2017 / Revised: 19 April 2017 / Accepted: 27 April 2017 / Published: 30 April 2017
(This article belongs to the Special Issue Antibacterial Materials and Coatings)
View Full-Text   |   Download PDF [18225 KB, uploaded 4 May 2017]   |  

Abstract

Silk sericin has great potential as a biomaterial for biomedical applications due to its good hydrophilicity, reactivity, and biodegradability. To develop multifunctional sericin materials for potential antibacterial application, a one-step synthesis method for preparing silver nanoparticles (AgNPs) modified on polydopamine-coated sericin/polyvinyl alcohol (PVA) composite films was developed. Polydopamine (PDA) acted as both metal ion chelating and reducing agent to synthesize AgNPs in situ on the sericin/PVA composite film. Scanning electron microscopy and energy dispersive spectroscopy analysis revealed that polydopamine could effectively facilitate the high-density growth of AgNPs as a 3-D matrix. X-ray diffractometry studies suggested the synthesized AgNPs formed good face-centered cubic crystalline structures. Contact angle measurement and mechanical test indicated AgNPs modified PDA-sericin/PVA composite film had good hydrophilicity and mechanical property. The bacterial growth curve and inhibition zone assays showed the AgNPs modified PDA-sericin/PVA composite film had long-term antibacterial activities. This work develops a new method for the preparation of AgNPs modified PDA-sericin/PVA film with good hydrophilicity, mechanical performance and antibacterial activities for the potential antimicrobial application in biomedicine. View Full-Text
Keywords: sericin; polyvinyl alcohol; polydopamine; silver nanoparticles; one-step synthesis; antibacterial activity sericin; polyvinyl alcohol; polydopamine; silver nanoparticles; one-step synthesis; antibacterial activity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Cai, R.; Tao, G.; He, H.; Song, K.; Zuo, H.; Jiang, W.; Wang, Y. One-Step Synthesis of Silver Nanoparticles on Polydopamine-Coated Sericin/Polyvinyl Alcohol Composite Films for Potential Antimicrobial Applications. Molecules 2017, 22, 721.

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