서지주요정보
도판트가 폴리아닐린의 온도에 따른 전기적 성질에 미치는 영향 = Effects of dopants on the electrical properties of polyaniline depending on temperature
서명 / 저자 도판트가 폴리아닐린의 온도에 따른 전기적 성질에 미치는 영향 = Effects of dopants on the electrical properties of polyaniline depending on temperature / 김석.
저자명 김석 ; Kim, Seok
발행사항 [대전 : 한국과학기술원, 1995].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8005793

소장위치/청구기호

학술문화관(문화관) 보존서고

MCHE 95010

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

The electrical properties for polyaniline (PAn) were investigated as a function of doping acids and temperature. The dopants used were dodecylbenzene sulfonic acid (DBSA), p-toluene sulfonic acid (pTSA) and HCl. The electrical conductivity and thermal stability were strongly dependent on the doping acids. It was explained by the facts that the stable structure and large molecular weight of dopant favored highly stable conductivity. The conductivity of PAn-DBSA increased linearly from $1.1\times10^{-4}$ to $3.0\times10^{-1}S/cm$ on thermal heating upto 140℃, but decayed to ca. $10^{-5}S/cm$ above 200℃. X-ray and FT-IR spectroscopic results gave a suggestion that the conductivity increased with the temperature by an additional doping process in which DBSA molecules entangled at first diffused to the doping site by the thermal motion and formed the increased orderings. PAn-pTSA showed the most stable conductivity of $10^{-2}S/cm$ upto at 180℃. The conductivity of PAn-HCl decayed dramatically in air than argon, suggesting that the effects of air oxidation on the degradation could not be negligible during the thermal aging. For PAn-HCl, the conductivity decreased mainly because of the evaporation of HCl as the temperature increased. In contrast, for PAn-pTSA and PAn-DBSA, the degradation of dopants and the decomposition of PAn-dopant complex made doping level lower, dropping their conductivity. Thermal stability of PAn depends on molecular weight and structural stability of dopants. As the pTSA and DBSA dopant degradation temperature are 300℃, it was confirmed that conductivity decayed at a lower temperature than pTSA and DBSA degradation temperature due to a complex degradation between PAn and dopants. Cyclic voltammetric results showed the electroactivity was strongly dependent on the electronic properties of PAn. The high conductivity is responsible for the better electroactivity of PAn.

서지기타정보

서지기타정보
청구기호 {MCHE 95010
형태사항 viii, 75 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Seok Kim
지도교수의 한글표기 : 정인재
지도교수의 영문표기 : In-Jae Chung
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 72-75
주제 Aniline.
Electric conductivity.
아닐린 수지. --과학기술용어시소러스
전기적 성질. --과학기술용어시소러스
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