| 超声引发无皂乳液聚合制备纳米银/PAAEM复合材料及其表征 |
| Synthesis and Characterization of Nanosilver/PAAEM Composites via Emulsifier-Free Emulsion Polymerization Ultrasonically |
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| 摘要: 在不使用气体保护及乳化剂的条件下，超声辐射引发无皂乳液聚合双原位合成纳米银/聚乙酰乙酸基甲基丙烯酸乙酯(PAAEM)复合材料。并通过XRD、FTIR、TEM、HRTEM、XPS和TG等分析方法对其进行表征。结果表明：纳米银粒子具有面心立方结构和球形或近球形形貌，且较均匀地分散在聚合物基体中；纳米银粒子与基体之间的相互作用是纳米银与基体中乙酰乙酸基的羰基氧原子配位所产生的；而且纳米银粒子对基体PAAEM的热学性能有很大影响。 |
| 关键词: 纳米银 PAAEM 复合材料 超声 无皂乳液聚合 |
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| Abstract: Nanosilver/Poly(acetoacetoxyethylmethacrylate(AAEM)) composites were synthesized via emulsifier-free emulsion with sliver nitrate solution and AAEM monomer polymerization by ultrasonic without gas protection and addition of emulsifier. The morphology, structure, thermal stability and the interaction between nanosilver and PAAEM matrix of the composites were characterized by various techniques including X-ray diffractometer (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), thermal-gravimetry analyzer (TGA) and et a1. The results showed that silver nanoparticles were dispersed highly and homogeneously in PAAEM matrix and possessed face-centered cubic structure. Spectrum of UV-Vis and HRTEM were indicated that there is chemical action between namo-Ag and special group attached to the polymer. XPS and FTIR analysis revealed that there existed an interaction between silver nanoparticles and C=O associated with acetoacetoxy from AAEM polymer. Thermoanalysis proved that thermal stability of the PAAEM nanocomposites was increasing with silver nanoparticles dispersed in the composites. |
| Keywords: nanosilver PAAEM composite ultrasonic emulsifier-free emulsion polymerization |
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| 邢宏龙,高圣涛,徐国财,赵建峰,豆 娜,贝培培,洪 戈.超声引发无皂乳液聚合制备纳米银/PAAEM复合材料及其表征[J].无机化学学报,2012,28(10):2103-2108. |
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