Effects of the Dopant Ratio on Polyaniline Coated Fiber Bragg Grating for pH detection

被引：13

作者：

Chiam, Yeong Siang ^{[1
]}

Ahad, Irma Zulayka Mohamad ^{[1
]}

Harun, Sulaiman Wadi ^{[2
]}

Gan, Seng Neon ^{[1
]}

Phang, Sook Wai ^{[3
]}

机构：

[1] Univ Malaya, Fac Sci, Dept Chem, Kuala Lumpur 50603, Malaysia

[2] Univ Malaya, Fac Engn, Dept Elect Engn, Kuala Lumpur 50603, Malaysia

[3] Tunku Abdul Rahman Univ Coll, Fac Appl Sci & Comp, Dept Phys Sci, Kuala Lumpur 53300, Malaysia

来源：

SYNTHETIC METALS | 2016年 / 211卷

关键词：

Polyaniline; AOT dopant ratio; FBG; pH solution; Bragg wavelength shift; OPTIC INTRINSIC BIOSENSOR; GAS SENSORS; SULFONIC-ACID; ELECTRODE; POLYMER; HUMIDITY; PLATFORM; GLUCOSE;

D O I：

10.1016/j.synthmet.2015.11.026

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

Polyaniline (PAni) coated Fiber Bragg Grating (FBG) for pH detection is presented in this study. PAni was synthesized at low temperature through chemical oxidation by using aniline (Ani) as monomer, ammonium persulphate (APS) as oxidant and dioctyl sodium sulfosuccinate (AOT) as dopant. The immersion of PAni-coated FBG in different pH solutions could produce different Bragg wavelength shift (similar to 1557 nm) in the optical spectrum analyzer (OSA). Fourier transformed infrared (FTIR) spectroscopy, ultraviolet-visible (UV-vis) spectroscopy and conductivity measurements were carried out to investigate the chemical interaction between protonated nitrogen atom of PAni backbone and pH analytes. The sensitivity of PAni-coated FBG was adjusted by changing the ratio of Ani:APS:AOT during the polymerization reaction. PAni-coated FBG with molar ratio of Ani:APS:AOT=5:5:5 achieved the highest sensitivity with response time of 10 s. Besides, the PAni-coated FBG also showed good recyclability up to 10 times. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：132 / 141

页数：10

共 23 条

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