Characterization and conversion determination of stable PEDOT latex nanoparticles synthesized by emulsion polymerization
學年 99
學期 2
出版（發表）日期 2011-03-01
作品名稱 Characterization and conversion determination of stable PEDOT latex nanoparticles synthesized by emulsion polymerization
作品名稱（其他語言）
著者 Wu, Chieh-Han; Don, Trong-Ming; Chiu, Wen-Yen
單位 淡江大學化學工程與材料工程學系
出版者 London: Elsevier Ltd
著錄名稱、卷期、頁數 Polymer 52(6), pp.1375-1384
摘要 In this research, poly(3,4-ethylenedioxythiophene) (PEDOT) latex nanoparticles with good colloidal stability were prepared by emulsion polymerization and the conversions of EDOT were determined. Two kinds of oxidants, Iron(III) p-toluenesulfonate Fe(OTs)3 and hydrogen peroxide H2O2, were introduced to decrease the use of iron salt and therefore reduce the particle coagulation. The ferrous ions (Fe2+) produced during the polymerization would be re-oxidized back to the reactive ferric ions (Fe3+) with the help of H2O2. This cyclic oxidation–reduction process resulted in the sustained regeneration of Fe3+ ions and led to a higher conversion. A dark blue PEDOT latex with long-term dispersion stability was obtained when Fe(OTs)3 and H2O2 were added in sequence. The results obtained from dynamic light scattering and TEM measurements showed that the sizes of nanoparticles were around 100 nm. To determine the conversion of EDOT, two methods (gravimetric analysis and UV–visible method) were used and compared. For the first time, the UV–visible method was established to quantitatively determine the conversion of EDOT monomer. From the measurement, the conversion of EDOT in this system was determined as 74–75%. The PEDOT film prepared by drying the latex solution had conductivity up to 6.3 S/cm.
關鍵字 Emulsion polymerization; Bi-oxidant Fe(OTs)3/H2O2 system; Conversion determination
語言 en
ISSN 0032-3861
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Chiu, Wen-Yen
審稿制度 是
國別 GBR
公開徵稿
出版型式 電子版 紙本
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