Spectroscopic Characterization of Zirconia Coated by Polymers with Amine Groups

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• 作者：Bernard Chaufer ; Murielle Rabiller-Baudry ; Anne Bouguen ; Jean Pierre Labbé ; and Auguste Qué ; merais
• 刊名：Langmuir
• 出版年：2000
• 出版时间：February 22, 2000
• 年：2000
• 卷：16
• 期：4
• 页码：1852 - 1860
• 全文大小：194K
• 年卷期：v.16,no.4(February 22, 2000)
• ISSN：1520-5827

文摘

The interaction between zirconia and polyethyleneimine (PEI) has been characterized using Fouriertransform infrared analysis (FTIR) and X-ray photoelectron spectroscopy (XPS). For FTIR, polyvinylimidazolewith an aromatic amine group and tetraethylenepentamine were added for an in-depth study: two newbroad bands due to nitrogen coordinated with zirconium are seen in the 1580-1560 cm^-1 region and1450-1350 cm^-1 region, respectively. XPS shows that both ZrOH and N⁺ were involved in a minor partonly, in good accordance with FTIR. After a cross-linking step of the adsorbed PEI on zirconia, a ratio ofabout one molecule of cross-linker to five PEI units was obtained by both methods. From XPS Zr 3d signalattenuation, the PEI thickness on plates is about 1.2 and 3.5 nm before and after the cross-linking step,respectively; the cross-linked PEI thickness on zirconia membrane is larger because of the procedure ofcoating or porous and tubular character of membranes.