Metal-Polymer Interactions in a Polymer/Metal Nanocomposite
Metal-Polymer Interactions in a Polymer/Metal Nanocomposite
复制标题
聚合物/金属纳米复合材料中的金属-聚合物相互作用
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
P. Baldo
中科院分区：
文献类型：
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作者：
Douglas H. Cole;K. Shull;L. Rehn;P. Baldo
对聚丙烯酸丁酯/金纳米复合三明治进行了热处理以诱导金颗粒的扩散，并用卢瑟福背散射光谱对其进行了监测。还进行了标记物运动实验，以独立探测颗粒和聚合物的迁移率。实验表明，与斯托克斯-爱因斯坦理论的预测相比，粒子迁移率降低了2-3个数量级。聚合物分子通过金粒子层的扩散减少的程度要小得多。这些结果归因于聚合物/金属界面上聚合物链段的缓慢交换动力学引起的颗粒之间的桥联。{版权所有}{ITAL 1997}{ITAL The American Physitive Society}
A poly({ital t}-butyl acrylate)/gold nanocomposite sandwich was annealed to induce diffusion of the gold particles, which was monitored using Rutherford backscattering spectrometry. Marker motion experiments were also performed to probe particle and polymer mobilities independently. The experiments revealed that particle mobility was decreased by 2 to 3 orders of magnitude compared with the predictions by Stokes-Einstein theory. Diffusion of polymer molecules through a gold particle layer is decreased by a much smaller extent. These results are attributed to bridging between particles arising from slow exchange kinetics of polymer segments at the polymer/metal interface. {copyright} {ital 1997} {ital The American Physical Society}