Synthesis of novel silver nanocomposite hydrogels based on polyurethane/poly(ethylene glycol) via aqueous extract of oak fruit and their antibacterial and mechanical properties

Rahmani Sohrab; Ghaemi Farzaneh; Khaleghi MaryamHaghi Fakhri

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Synthesis of novel silver nanocomposite hydrogels based on polyurethane/poly(ethylene glycol) via aqueous extract of oak fruit and their antibacterial and mechanical properties

机译：Synthesis of novel silver nanocomposite hydrogels based on polyurethane/poly(ethylene glycol) via aqueous extract of oak fruit and their antibacterial and mechanical properties

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In this study, novel hydrogels based on polyurethane/polyethylene glycol (PU/PEG) and their silver nanocomposites (PU/PEG/Ag x, x = 100, 200, 400, and 800) were developed using click chemistry and a green method. Mechanical analysis showed that introducing of silver nanoparticles (AgNPs) into hydrogels and increasing the content increased their mechanical properties dramatically. Tensile strength and elongation at break increased from 0.2 MPa and 105% for PU/PEG to 2.5 MPa and 210% for PU/PEG/Ag 800. Similarly, the compressive strength increased from 5 to 55 MPa. Investigation of the SEM images showed that the AgNPs were homogeneously dispersed throughout the hydrogel network, and through the incorporation of silver nanoparticles in hydrogels, the pore size of hydrogels decreased. Therefore, the swelling degree of hydrogels decreased by increasing the content of AgNPs. FTIR spectroscopy and X-ray photoelectron spectroscopy (XPS) demonstrated that the interaction of network heteroatoms with AgNPs was responsible for stabilizing silver nanoparticles. The antibacterial properties of nanocomposites were evaluated against Pseudomonas aeruginosa and Staphylococcus aureus bacteria. These nanocomposites showed significant activities against S. aureus bacteria. In addition, the cell viability test showed that these nanocomposites had good biocompatibility (84% cells viable). Therefore, they could be favorable candidates for wound dressing applications.

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来源
《Polymer Composites》 |2021年第12期|6719-6735|共17页
作者
Rahmani Sohrab; Ghaemi Farzaneh; Khaleghi MaryamHaghi Fakhri;
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作者单位

Univ Zanjan;

Zanjan Univ Med Sci;

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原文格式 PDF
正文语种英语
中图分类增强塑料、填充塑料;
关键词
antibacterial activity; green synthesis; nanocomposite hydrogels; silver nanoparticles; wound dressing; WOUND DRESSINGS; INJECTABLE HYDROGELS; GREEN SYNTHESIS; NANOPARTICLES; BACTERIAL;

Synthesis of novel silver nanocomposite hydrogels based on polyurethane/poly(ethylene glycol) via aqueous extract of oak fruit and their antibacterial and mechanical properties

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