期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 30, 期 13, 页码 1116-1122出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200900174
关键词
antibacterial properties; mechanical properties; nanocomposites; polysiloxanes
资金
- National Science Foundation Division of Materials Research [0512156]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0512156] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1047655] Funding Source: National Science Foundation
We demonstrate a simple one-step method for synthesizing noble metal nanoparticle embedded free standing polydimethylsiloxane (PDMS) composite films. The process involves preparing a homogenous mixture of metal salt (silver, gold and platinum), silicone elastomer and the curing agent (hardener) followed by curing. During the curing process, the hardener crosslinks the elastomer and simultaneously reduces the metal salt to form nanoparticles. This in situ method avoids the use of any external reducing agent/stabilizing agent and leads to a uniform distribution of nanoparticles in the PDMS matrix. The films were characterized using UV-Vis spectroscopy, transmission electron microscopy and X-ray photoemission spectroscopy. The nanoparticle-PDMS films have a higher Young's modulus than pure PDMS films and also show enhanced antibacterial properties. The metal nanoparticle-PDMS films could be used for a number of applications such as for catalysis, optical and biomedical devices and gas separation membranes.
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