Interfacial surfactant competition and its impact on poly(ethylene oxide)/Au and poly(ethylene oxide)/Ag nanocomposite properties.

IF 4.9 Q2 NANOSCIENCE & NANOTECHNOLOGY Nanotechnology, Science and Applications Pub Date : 2017-04-20 eCollection Date: 2017-01-01 DOI:10.2147/NSA.S129468
Merve Seyhan, William Kucharczyk, U Ecem Yarar, Katherine Rickard, Deniz Rende, Nihat Baysal, Seyda Bucak, Rahmi Ozisik
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引用次数: 16

Abstract

The structure and properties of nanocomposites of poly(ethylene oxide), with Ag and Au nanoparticles, surface modified with a 1:1 (by volume) oleylamine/oleic acid mixture, were investigated via transmission electron microscopy, scanning electron microscopy, thermogravimetric analysis, differential scanning calorimetry (DSC), infrared spectroscopy, dynamic mechanical analysis, and static mechanical testing. Results indicated that there was more oleylamine on Ag nanoparticles but more oleic acid on Au nanoparticles. This difference in surfactant populations on each nanoparticle led to different interfacial interactions with poly(ethylene oxide) and drastically influenced the glass transition temperature of these two nanocomposite systems. Almost all other properties were found to correlate strongly with dispersion and distribution state of Au and Ag nanoparticles, such that the property in question changed direction at the onset of agglomeration.

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界面表面活性剂的竞争及其对聚环氧乙烷/Au和聚环氧乙烷/Ag纳米复合材料性能的影响
采用透射电子显微镜、扫描电子显微镜、热重分析、差示扫描量热法(DSC)、红外光谱、动态力学分析和静态力学测试等手段,研究了以体积比为1:1的油胺/油酸混合物表面改性的银和金纳米聚环氧乙烷纳米复合材料的结构和性能。结果表明,银纳米颗粒上含有较多的油胺,而金纳米颗粒上含有较多的油酸。表面活性剂在纳米粒子上的分布差异导致了纳米粒子与聚环氧乙烷之间不同的界面相互作用,并极大地影响了这两种纳米复合体系的玻璃化转变温度。几乎所有其他性质都被发现与Au和Ag纳米颗粒的分散和分布状态密切相关,因此所讨论的性质在团聚开始时改变了方向。
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来源期刊
Nanotechnology, Science and Applications
Nanotechnology, Science and Applications NANOSCIENCE & NANOTECHNOLOGY-
CiteScore
11.70
自引率
0.00%
发文量
3
审稿时长
16 weeks
期刊介绍: Nanotechnology, Science and Applications is an international, peer-reviewed, Open Access journal that focuses on the science of nanotechnology in a wide range of industrial and academic applications. The journal is characterized by the rapid reporting of reviews, original research, and application studies across all sectors, including engineering, optics, bio-medicine, cosmetics, textiles, resource sustainability and science. Applied research into nano-materials, particles, nano-structures and fabrication, diagnostics and analytics, drug delivery and toxicology constitute the primary direction of the journal.
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