Optically active poly(amide–imide)/TiO2 nanocomposites containing amino acid moieties: synthesis and properties

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• 作者：Zahra Rafiee ; Elham Zare
• 关键词：Poly(amide–imide) ; Nanocomposite ; Amine ; functionalized TiO2 ; TiO2
• 刊名：Amino Acids
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：47
• 期：11
• 页码：2293-2302
• 全文大小：1,511 KB
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• 作者单位：Zahra Rafiee (1)
  Elham Zare (1)
  
  1. Department of Chemistry, Yasouj University, 75914-74831, Yasouj, Islamic Republic of Iran
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Biochemistry
  Analytical Chemistry
  Biochemical Engineering
  Life Sciences
  Proteomics
  Neurobiology
  
• 出版者：Springer Wien
• ISSN：1438-2199

文摘

The novel optically active poly(amide–imide) (PAI)/TiO₂ nanocomposites containing fluorene moieties have been successfully synthesized through ultrasonic irradiation. The surface of nanoparticles was chemically modified with γ-aminopropyltriethoxyl silane to enhance the compatibility with polymeric matrix and to avoid the aggregation of nanoparticles. The dispersion of surface-modified TiO₂ in PAI film was confirmed by the transmission electron microscope (TEM) analysis showing the well-dispersed nanosized TiO₂ nanoparticles. The thermal stabilities and optical properties of PAI/surface-modified TiO₂ nanocomposite films were also investigated. The thermogravimetric analysis data showed an improvement of thermal stability of novel nanocomposite films as compared to the pure polymer.