Enhancing the Thermal Conductance of Polymer and Sapphire Interface via Self-Assembled Monolayer

	Enhancing the Thermal Conductance of Polymer and Sapphire Interface via Self-Assembled Monolayer
	Zheng, Kun 1; Sun, Fangyuan 2; Zhu, Jie 2,4; Ma, Yongmei 1; Li, Xiaobo 3; Tang, Dawei 2; Wang, Fosong 1; Wang, Xiaojia 4
刊名	ACS NANO
	2016-08-01
卷号	10 期号:8 页码:7792-7798
关键词	interfacial thermal conductance solubility parameter organic-inorganic interface miscibility time domain thermoreflectance
英文摘要	Interfacial thermal conductance (ITC) receives enormous consideration because of its significance in determining thermal performance of hybrid materials, such as polymer based nanocomposites. In this study, the ITC between sapphire and polystyrene (PS) was systematically investigated by time domain thermoreflectance (TDTR) method. Silane based self-assembled monolayers (SAMs) with varying end groups, -NH2, -Cl, -SH and -H, were introduced into sapphire/PS interface, and their effects on ITC were investigated. The ITC was found to be enhanced up by a factor of 7 through functionalizing the sapphire surface with SAM, which ends with a chloride group (-Cl). The results show that the enhancement of the thermal transport across the SAM-functionalized interface comes from both strong covalent bonding between sapphire and silane-based SAM, and the high compatibility between the SAM and PS. Among the SAMs studied in this work, we found that the ITC almost linearly depends on solubility parameters, which could be the dominant factor influencing on the ITC compared with wettability and adhesion. The SAMs serve as an intermediate layer that bridges the sapphire and PS. Such a feature can be applied to ceramic-polymer immiscible interfaces by functionalizing the ceramic surface with molecules that are miscible with the polymer materials. This research provides guidance on the design of critical-heat transfer materials such as composites and nanofluids for thermal management.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/35221]
专题	化学研究所_绿色印刷实验室
作者单位	1.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China 3.Huazhong Univ Sci & Technol, Sch Energy & Power Engn, Wuhan 430074, Peoples R China 4.Univ Minnesota, Dept Mech Engn, Minneapolis, MN 55455 USA
推荐引用方式 GB/T 7714	Zheng, Kun,Sun, Fangyuan,Zhu, Jie,et al. Enhancing the Thermal Conductance of Polymer and Sapphire Interface via Self-Assembled Monolayer[J]. ACS NANO,2016,10(8):7792-7798.
APA	Zheng, Kun.,Sun, Fangyuan.,Zhu, Jie.,Ma, Yongmei.,Li, Xiaobo.,...&Wang, Xiaojia.(2016).Enhancing the Thermal Conductance of Polymer and Sapphire Interface via Self-Assembled Monolayer.ACS NANO,10(8),7792-7798.
MLA	Zheng, Kun,et al."Enhancing the Thermal Conductance of Polymer and Sapphire Interface via Self-Assembled Monolayer".ACS NANO 10.8(2016):7792-7798.