TY - JOUR
T1 - Silver nanowire/thermoplastic polyurethane elastomer nanocomposites
T2 - Thermal, mechanical, and dielectric properties
AU - Mi, Hao Yang
AU - Li, Zheng
AU - Turng, Lih Sheng
AU - Sun, Yugang
AU - Gong, Shaoqin
PY - 2014/4
Y1 - 2014/4
N2 - 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.
AB - 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.
KW - Dielectric property
KW - Elastomer
KW - Nanocomposites
KW - Silver nanowire
KW - Thermoplastic polyurethane
UR - http://www.scopus.com/inward/record.url?scp=84890083325&partnerID=8YFLogxK
U2 - 10.1016/j.matdes.2013.11.029
DO - 10.1016/j.matdes.2013.11.029
M3 - 文章
AN - SCOPUS:84890083325
SN - 0264-1275
VL - 56
SP - 398
EP - 404
JO - Materials and Design
JF - Materials and Design
ER -