Structure formation and conductive properties of epoxy/in situ polymerized methacrylate polymer/silver filler composites
Structure formation and conductive properties of epoxy/in situ polymerized methacrylate polymer/silver filler composites
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DOI：
10.1016/j.polymer.2022.124520
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发表时间：
2022-01-10
期刊：
影响因子：
4.6
通讯作者：
Furui, Hirohiko
中科院分区：
文献类型：
--
作者：
Kishi, Hajime;Kimura, Natsumi;Furui, Hirohiko
研究了聚双酚F二缩水甘油醚（DGEBF）/聚甲基丙烯酸二环戊烯氧基乙酯（DPOMA）/银（Ag）填料复合材料的结构形成和导电性能。DGEBF/40wt%DPOMA共混物表现出较低的粘度，并通过DPOMA的原位自由基聚合和DGEBF的阴离子聚合形成微米尺度的共连续相结构。扫描电子显微镜和纳米红外光谱显示，银填料，肉豆蔻酸表面处理，选择性地定位在甲基丙烯酸酯聚合物丰富的阶段。因此，Ag填料存在于自组装的狭窄区域中，其形成导电通道。因此，DGEBF/DPOMA/Ag复合材料实现了导电性，与DGEBF/Ag复合材料相比，减少了30%的Ag填料。通过测量富环氧相、富DPOMA聚合物相和经表面处理的Ag填料的汉森溶解度参数（HSP），阐明了Ag填料选择性放置的机理。
The structure formation and electrical conductivity of poly[diglycidyl ethers of bisphenol-F (DGEBF)]/poly [dicyclopentenyloxyethyl methacrylate (DPOMA)]/silver (Ag) filler composites were investigated. DGEBF/40 wt % DPOMA blends showed low viscosity and formed co-continuous phase structures at the micrometer scale via in situ radical polymerization of DPOMA followed by anionic polymerization of DGEBF. Scanning electron microscopy and nano-infrared spectroscopy revealed that the Ag fillers, surface-treated with myristic acid, were selectively localized in the methacrylate polymer-rich phases. Consequently, the Ag fillers were present in the self-assembled narrow area, which formed a conductive channel. The DGEBF/DPOMA/Ag composites thus achieved electrical conductivity with a reduction of the 30% Ag fillers, compared to the DGEBF/Ag composites. The mechanism for the selective placement of the Ag fillers was clarified in terms of the affinity among the epoxy-rich phase, the DPOMA polymer-rich phase, and the surface-treated Ag fillers by measurement of their Hansen solubility parameters (HSPs).