Enhanced Thermal Stability of Polyaniline with Polymerizable Dopants
- 주제(키워드) polyaniline , thermal stability , polymerizable dopants
- 발행기관 고려대학교 KU-KIST융합대학원
- 지도교수 안동준
- 발행년도 2017
- 학위수여년월 2017. 2
- 학위구분 석사
- 학과 KU-KIST융합대학원 NBIT전공
- 원문페이지 75 p
- 실제URI http://www.dcollection.net/handler/korea/000000071512
- 본문언어 영어
- 제출원본 000045897197
초록/요약
Polydiacetylenes (PDAs), a family of conjugated polymers, are known to show the stimulus-induced apparent blue-to-reds transitions that has led to the development of a variety of PDA-based chemosensors. However, diacetylene (DA) as dopant of polyaniline (PANI) has yet to be addressed. In this study, the new amphiphilic 2-(pentacosa-10,12-diynamido) ethane-1-sulfonic acid (PCDA-taurine) and 4-(pentacosa-10,12-diynamido) benzene-1-sulfonic acid (PCDA-pBzS) dopants are synthesized by changing from carboxyl group to sulfonic group. These polymerizable dopants in PANI are photopolymerized by UV irradiation. We expect to increase thermal stability and sustain conductivity of PANI. The polymerizable dopants were characterized by FT-IR, NMR, GC-MS to determine whether changing of functional group. Also to determine whether photopolymerization of these dopants in PANI, we analyze Resonance Raman Spectroscopy (RRS). And to analyze the thermal stability and conductivity of PANI, characterization using Thermal Gravimetric Analysis (TGA) and Four Point Probe Method were undertaken. Compared with TGA results of PANI with DBSA, the TGA results show enhanced thermal stability of PANI with polymerizable dopants.
more목차
Abstract i
Table of Contents ii
List of Figures iv
List of Tables vii
1. Introduction 1
1.1. Introduction 1
1.2. Diacetylene monomer 5
1.3. Polyaniline (PANI) 8
1.4. Fabrication of PANI as antistatic agents 10
1.5. Objective of research 11
2. Experimental Section 14
2.1. Materials and instruments 14
2.2. Synthesis of polymerizable dopant 15
2.2.1. Experimental concept 15
2.2.2. Synthesis of PCDA-taurine & PCDA-pBzS 15
2.2.3. Introduction of DCHD 20
2.3. Synthesis of polyaniline 22
2.3.1. Synthesis of PANI with DBSA 22
2.3.2. Synthesis of PANI with PCDA-taurine
and PCDA-taurine &HCl 24
2.3.3. Synthesis of PANI with DBSA&PCDA-taurine, DBSA&PCDA-pBzS and DBSA&DCHD 26
3. Results and Discussion 28
3.1. Chemical analysis of polymerizable dopants 28
3.1.1. Chemical functional group analysis of polymerizable dopants 28
3.1.2. NMR and GC-MS analysis of polymerizable dopants 31
3.2. Chemical analysis of PANI with polymerizable dopants 34
3.2.1. Chemical functional group analysis of PANI 34
3.2.2. Resonance Raman scattering analysis of PANI 36
3.2.2.1. Raman spectra of PANI with PCDA-taurine 38
3.2.2.2. Raman spectra of PANI with PCDA-pBzS 40
3.1. Thermal stability and sheet resistance analysis of PANI 43
3.3.1. Thermal stability analysis of PANI 43
3.3.1.1. Thermal stability of PANI with only PCDA-taurine 43
3.3.1.2. Thermal stability of PANI with PCDA-taurine&HCl 45
3.3.1.3. Thermal stability of PANI with PCDA-taurine&DBSA 47
3.3.1.4. Thermal stability of PANI with PCDA-pBzS&DBSA 49
3.3.1.5. Thermal stability of PANI with DCHD&DBSA 51
3.3.2. Sheet resistance analysis of PANI 53
4. Conclusion 56
REFERENCES 58
