Synthesis and Characterization of Lead Titanate Fine Particles-Organic Hybrid

钛酸铅细颗粒-有机杂化物的合成与表征

• 批准号: 09650733
• 负责人: YOGO Toshinobu
• 金额: $ 2.18万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650733/
• 关键词: Lead titanate; Hybrid; Complex alkoxides; Metal-organic compounds

Ceramic/polymer hybrids attract growing attentions as new inorganic/organic materials. We have synthesized and characterized PbTiO_3/organic hybrid from metal-organic precursor. The results obtained were as follows :(1)PbTiO_3(PT) precursor was prepared from lead- organic and titanium alkoxide. IR and NMR analyses of the precursor revealed the formation of double metal organics in solution.(2)The formation conditions of nano-crystalline PbTiO_3 particles were established. The precursor was hydrolyzed and polymerized under the controlled reaction conditions. The formation conditions of nano-sized PT particles below 100ﾟC were investigated. The crystalline particles in the organic matrix were analyzed by Raman spectroscopy, SAD and EDX.The particle size was found to depend upon the polymerization and hydrolysis conditions.(3)The hybrid was shaped into films by heating under pressure. The dielectric properties of the hybrid film were also evaluated. The dielectric constant of the hybrid was also depend upon the polymerization and hydrolysis 6onditions. The dielectric constant of the hybrid was 5.2 at 10 kHz at room temperature.

陶瓷/聚合物杂化材料作为一种新型的无机/有机复合材料正受到越来越多的关注。以金属有机物为前驱体，合成了PbTiO_3/有机杂化材料，并对其进行了表征。（1）以有机铅和钛醇盐为原料，制备了钛酸铅前驱体.红外光谱和核磁共振谱分析表明，在溶液中形成了双金属有机物。（2）确定了PbTiO_3纳米晶的形成条件。前体在受控的反应条件下水解和聚合。研究了100 ℃以下纳米PT粒子的形成条件。通过拉曼光谱、SAD和EDX对有机基质中的结晶颗粒进行了分析，发现结晶颗粒的大小与聚合和水解条件有关。（3）通过在压力下加热将杂化物成型为膜。还评价了杂化膜的介电性能。杂化材料的介电常数也取决于聚合和水解条件。在室温下，在10 kHz下，杂化物的介电常数为5.2。