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材料研究学报  2011, Vol. 25 Issue (3): 303-307    
  研究论文 本期目录 | 过刊浏览 |
纳米Pd--Ga/PMMA复合体系界面的有序结构
徐国财, 戴明虎, 张晓梅, 高圣涛, 邢宏龙
安徽理工大学化学工程学院 淮南 232001
Interface Order-microstructure of Nano Pd–Ga Alloy/PMMA Composites
XU Guocai, DAI Minghu, ZHANG Xiaomei, GAO Shengtao, XING Honglong
School of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001
引用本文:

徐国财 戴明虎 张晓梅 高圣涛 邢宏龙. 纳米Pd--Ga/PMMA复合体系界面的有序结构[J]. 材料研究学报, 2011, 25(3): 303-307.
. Interface Order-microstructure of Nano Pd–Ga Alloy/PMMA Composites[J]. Chin J Mater Res, 2011, 25(3): 303-307.

全文: PDF(798 KB)  
摘要: 在不使用引发剂和还原剂条件下, 用超声辐射工艺双原位合成了纳米钯镓/聚甲基丙烯酸甲酯(PMMA)复合物。XRD和UV--Vis显示, 超声还原生成的单质钯和超声粉碎的单质镓在PMMA基体中不是简单的物理分散, 而是在生成钯镓合金Ga$_{5}$Pd/PMMA复合物的同时既有纳米钯又有纳米镓与PMMA形成复合物; XPS表明, 镓失去了部分外层电子, 一部分流向钯生成合金Ga5Pd; 一部分与聚合物酯基中的氧配位产生相互作用。TEM结果表明, 正是由于纳米金属与聚合物之间的相互作用, 在相界面处PMMA形成了各向异性有序结构。
关键词 复合材料纳米钯镓聚甲基丙烯酸甲酯超声界面结构纳米复合物    
Abstract:Nano Ga–Pd/poly methyl methacrylate (PMMA) composite materials were prepared with the palladium chloride solution containing metal galliumMMA as monomer without initiator or reducer. Results show that there are Pd, Ga, and Ga5Pd phase in PMMA matrix. There was a characteristic absorption peak at 200 nm for nano–Ga/PMMA polymer solution, at 209 nm for nano–Pd/PMMA polymer solution, and the absorption peak of nano Pd–Ga/PMMA shiftted to long wavelength at 218 nm; Nano Ga5Pd formed based on segment electronics shifting from gallium to palladium, and coordination formed found on part electronics diverted from gallium to oxygen of PMMA ester group. PMMA possess anisotropic ordered microstructure around nano Ga-Pd particles, illustrating that there are interaction between nano
Ga–Pd particles as dispersive and PMMA as continuous phase.
Key wordscomposites    nano Pd–Ga    PMMA    ultrasonic    interface structure    nanocomposite
收稿日期: 2011-02-28     
ZTFLH: 

O614

 
基金资助:

安徽省自然科学基金090414183和安徽省高校科研基金KJ2009A46资助项目。

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