Synthesis and characterization of silver/poly(N-vinyl-2-pyrrolidone) hydrogel nanocomposite obtained by in situ radiolytic method

被引：59

作者：

Jovanovic, Zeljka ^{[2
]}

Krkljes, Aleksandra ^{[1
]}

Stojkovska, Jasmina ^{[2
]}

Tomic, Simonida ^{[2
]}

Obradovic, Bojana ^{[2
]}

Miskovic-Stankovic, Vesna ^{[2
]}

Kacarevic-Popovic, Zorica ^{[1
]}

机构：

[1] Univ Belgrade, Vinca Inst Nucl Sci, Belgrade 11001, Serbia

[2] Univ Belgrade, Fac Technol & Met, Belgrade 11120, Serbia

来源：

RADIATION PHYSICS AND CHEMISTRY | 2011年 / 80卷 / 11期

关键词：

Hydrogel; Gamma irradiation; Ag/PVP nanocomposite; Swelling studies; Mechanical properties; Network parameters; SILVER NANOPARTICLES; POLY(N-VINYL-2-PYRROLIDONE) HYDROGELS; FABRICATION; DIFFUSION; POLYMERS; CLUSTERS; GOLD; SIZE;

D O I：

10.1016/j.radphyschem.2011.06.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

This work describes radiolytic synthesis of silver nanoparticles (Ag NPs) within the poly(N-vinyl-2-pyrrolidone) (PVP) hydrogel. The hydrogel matrix was obtained by gamma irradiation-induced cross-linking, while the in situ reduction of Ag+ ions was performed using strong reducing species formed under water radiolysis. Absorption spectrum of the Ag/PVP nanocomposite confirmed the formation of Ag NPs, showing the surface plasmon band maxima at 405 nm. Ag/PVP nanocomposites were characterized by XRD and TEM analysis, accompanied with investigations of swelling and diffusion properties in the simulated body fluid at 37 degrees C, and mechanical properties in bioreactor conditions. It was shown that Ag/PVP nanocomposite exhibited higher values of equilibrium swelling degree, Young's modulus, and molar mass between crosslinks, while lower values of the diffusion coefficient and effective crosslink density were obtained, as compared to the pure PVP. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1208 / 1215

页数：8

共 56 条

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