Độ nhạy pH của muối polyaniline emeraldine và hợp chất poly(vinyl butyral)

• Ngôn ngữ: vie
• Ký hiệu phân loại: 668.9 Polymers and polymerization
• Thông tin xuất bản: Nanoscience and Nanotechnology, 2014
• Mô tả vật lý: 45296
• Bộ sưu tập: Metadata
• ID: 506722

Tóm tắt

pH sensitivity of emeraldine salt polyaniline (ES-PANI) and poly(vinyl butyral) (PVB) blend film was investigated. This blend film can be used as a pH sensing element in new-type pH sensors to replace traditional instruments based on fragile glass electrodes for pH measurement of water in aquaculture farming. Structural and optical characteristic of P ANI were studied by Fourier transform infrared spectroscopy (FTIR) and ultraviolet visible spectroscopy (UV-vis). Electrical characterization of ES-PANI:PVB blend films versus pH was performed with chemiresistors fabricated by micro-lithography. A ES-PANI:PVB layer was drop-coated on comb-shaped platinum electrodes patterned on Si02/Si substrates. Scanning electron microscope (SEM) and optical microscope were used to investigate morphology of the fabricated platinum electrodes and the coated polymer blend films. I-V measurements of the polymer-coated chemiresistors were performed at very low relative humidity after the polymer films were exposed to pH 1-8. The results showed that logarithm of electrical resistance of the ES-PANI:PVB films increased almost linearly as pH increased from 1 to 8. The initial results showed that the PANI blend-coated chemiresistors can be used as pH sensors for water quality monitoring.