| 학회 | 한국고분자학회 |
| 학술대회 | 2004년 가을 (10/08 ~ 10/09, 경북대학교) |
| 권호 | 29권 2호, p.610 |
| 발표분야 | 기능성 고분자 |
| 제목 | Electrical and Thermal Properties of Poly(ethylene oxide) Blend Mixed with an Acid-doped Polyaniline |
| 초록 | Conducting polymer blends have been investigated because of potential applications in batteries, capacitors, electrochromic devices, sensors, and antistatic materials 1,2. Among conducting polymers, polyaniline(PANI) has been extensively studied in the last decades due to its high conductivity, environmental and thermal stability, low material cost, and ease of synthesis. However, the processing of this polymer is difficult because PANI decomposes below its melting point. To improve the processability of PANI, it can be made soluble in organic solvent by using a CSA(10-camphor sulfonic acid) or DBSA(dodecylbenzene sulfonic acid) as a functionalized doping acid having a bulky volume 3. In this study, PANI/PEO blend solution is prepared by dissolving PEO and PANI doped with CSA or DBSA as a functionalized doping acid. From this solution, the preparation of conducting polymer blend films or fibers can be possible. The electrical and the thermal properties of blends are investigated as a function of PANI contents or doping acid contents. Figure 1 shows TGA curves of PANI-CSA/PEO blend as a function of PANI-CSA contents. PEO shows an abrupt mass decrease at 350°C, which can be assigned to a decomposition of polymer chains. As the PANI-CSA content increases, the mass decrease at 250°C becomes larger. The decrease can be related with loss of CSA doping acid from PANI-CSA. Figure 2 shows the XRD patterns of PANI-CSA/PEO blends. The intensity of peak at 19° and 23° shows an increase as the PANI-CSA content increases from 9% to 30%. From this result, it can be concluded that the chain orientation of blend fiber is improved by incorporating linear and rigid PANI polymer. Fig.1. TGA graphs of PANI-CSA/PEO blends with varying the PANI-CSA weight percent of (a)0%, (b)9%, (c)17%, and (d)30% Fig.2. XRD patterns of PANI-CSA/PEO blends with varying the PANI-CSA weight percent of (a)9%, (b)17%, and (c)30% References 1. H.S. Nalwa(Ed.), Handbook of Organic Conductive Molecules and Polymers, vols. 1-4, Wiley, New York, 1997. 2. S.J. Park, S.W. Song, and J.S. Shin, Sens. Actuators A, (2004) in press. 3. C.Y. Yang, Y. Cao, P. Smith, and A.J. Heeger, Synth. Met., 53, 293 (1993). |
| 저자 | 김 석, 조미화, 박수진, 이재락, 강영구, 류호진 |
| 소속 | 한국화학(연) |
| 키워드 | Electrical property; Thermal property; Conducting polymers; Polymer blends |
