Abstract

New insoluble polymer silver-containing nanocomposites are synthesized by the thermal treatment of a polymer complex based on polyacrylonitrile without the use of an additional reducing agent. The resulting composites are paramagnetic and have a spin concentration of about 10¹⁷−10¹⁸ spin/g and an average size of silver nanoparticles of 5−8 nm. The electron paramagnetic resonance is used to monitor the synthesis of nanosystems in time. It is found that the nanocomposite is formed via two main stages through the reduction of silver ions and the further development of nanoparticles, while the polymer matrix can undergo some changes and contribute to the overall magnetism of the resulting composite.

中文翻译：

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聚丙烯腈盐热解过程中含银纳米复合材料的形成：EPR研究

摘要

通过对基于聚丙烯腈的聚合物配合物进行热处理，无需使用额外的还原剂，即可合成出新型的不溶性含银聚合物纳米复合材料。所得的复合物是顺磁性的，并且具有约10 ¹⁷ -10 ¹⁸ spin / g的自旋浓度和5-8 nm的银纳米粒子的平均尺寸。电子顺磁共振用于及时监测纳米系统的合成。发现纳米复合物是通过还原银离子和进一步发展纳米颗粒而经由两个主要阶段形成的，而聚合物基质可发生一些变化并有助于所得复合物的整体磁性。