Physico-chemical and mechanical properties and antibacterial activity of silver/poly(vinyl alcohol)/graphene nanocomposites obtained by electrochemical method

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• 作者：Rade Surudžić^a ; Ana Janković^a ; Nata&scaron ; a Bibić^b ; Maja Vuka&scaron ; inović-Sekulić^a ; Aleksandra Perić-Grujić^a ; Vesna Mi&scaron ; ković-Stanković^a ; ^d ; Soo Jin Park^c ; ^{sjpark@inha.ac.kr" class="auth_mail" title="E-mail the corresponding author} ; Kyong Yop Rhee^d ; ^{rheeky@khu.ac.kr" class="auth_mail" title="E-mail the corresponding author}
• 关键词：A. Polymer-matrix composites (PMCs) ; B. Chemical properties ; D. Surface analysis ; D. Thermal analysis
• 刊名：Composites Part B: Engineering
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：85
• 期：Complete
• 页码：102-112
• 全文大小：2933 K

文摘

Silver/poly(vinyl alcohol) and silver/poly(vinyl alcohol)/graphene nanocomposites in different forms (colloid dispersion, thin films and hydrogel discs) were synthesized by electrochemical reduction of Ag⁺ ions at constant current density. CV, Raman, XRD, FT-IR, and XPS analyses were used to characterize the interactions between silver nanoparticles, PVA molecules, and graphene. Ag/PVA/Gr nanocomposites had better mechanical and thermal properties and higher antibacterial activity against Staphylococcus aureus and Escherichia coli than Ag/PVA nanocomposites. Slow silver release, as well as a high remaining silver content (76%) after 28 days in simulated body fluid confirmed that both Ag/PVA and Ag/PVA/Gr nanocomposites are capable of maintaining sterility over time.