Silver nanowire/thermoplastic polyurethane elastomer nanocomposites: Thermal, mechanical, and dielectric properties

Hao Yang Mi, Zheng Li, Lih Sheng Turng, Yugang Sun, Shaoqin Gong*

*此作品的通信作者

研究成果: 期刊稿件文章同行評審

101 引文 斯高帕斯(Scopus)

摘要

Films of polyvinylpyrrolidone (PVP)-stabilized silver nanowire (AgNW)/thermoplastic polyurethane (TPU) elastomer nanocomposites were fabricated and characterized. With increasing loading levels of AgNW, the transparency of the nanocomposite films was reduced, but their crystallization temperatures increased, suggesting that AgNW could serve as crystallization nucleating agents. The addition of AgNW also enhanced both the Young's moduli and storage moduli of the nanocomposite films, but caused a reduction in their strain-at-break (from 536% to 304% with 1.5. vol.% AgNW) and ultimate strength (from 12.7 to 9.8. MPa with 1.5. vol.% AgNW). The specific toughness was the highest for nanocomposites with AgNW loading levels of 0.03. vol.% and 0.05. vol.%. In addition, the dielectric constant of the nanocomposite films with 1.5. vol.% AgNW was 9 times higher than that of pure TPU at 1. kHz, while the dielectric loss of all nanocomposite films studied was less than 0.2. Thus, AgNW/TPU elastomer nanocomposites with varying mechanical, dielectric, and thermal properties can be engineered by adding a small amount of AgNW. These nanocomposites can potentially be used for a wide range of applications including dielectric materials.

原文英語
頁(從 - 到)398-404
頁數7
期刊Materials and Design
56
DOIs
出版狀態已出版 - 04 2014
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