THERMAL-ANALYSIS OF POLYANILINE .1. THERMAL-DEGRADATION OF HCL-DOPED EMERALDINE BASE

被引：87

作者：

TRAORE, MK ^{[1
]}

STEVENSON, WTK ^{[1
]}

MCCORMICK, BJ ^{[1
]}

DOREY, RC ^{[1
]}

WEN, S ^{[1
]}

MEYERS, D ^{[1
]}

机构：

[1] WICHITA STATE UNIV,NATL INST AVIAT RES,WICHITA,KS 67208

来源：

SYNTHETIC METALS | 1991年 / 40卷 / 02期

关键词：

D O I：

10.1016/0379-6779(91)91770-B

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hydrochloric acid-doped emeraldine base has been subjected to programmed thermal degradation under high vacuum conditions. The temperature profiles of the degradation processes have been mapped using thermogravimetry (TG) in conjunction with thermal volatilization analysis (TVA). Product distributions have been ascertained using the fractionating capability of the TVA system in conjunction with ancillary techniques of analysis such as infrared (IR) and proton nuclear magnetic resonance (NMR) spectroscopy and gas chromatography-mass spectrometry (GC-MS). At low temperatures (c. 200-degrees-C) HCl gas is evolved. At higher temperatures the polymer is subject to complex and overlapping processes involving chain scissions, ring fusions and fragmentations, and heterocycle production. These observations are rationalized through the construction of a family of plausible reaction mechanisms which are consistent with our measured product distributions.

引用

页码：137 / 153

页数：17

共 18 条

[1] POLYANILINE - PROTONIC ACID DOPING OF THE EMERALDINE FORM TO THE METALLIC REGIME [J].

CHIANG, JC ;

MACDIARMID, AG .

SYNTHETIC METALS, 1986, 13 (1-3) :193-205

[2] INFLUENCE OF OXIDATION-STATE, PH, AND COUNTERION ON THE CONDUCTIVITY OF POLYANILINE [J].

FOCKE, WW ;

WNEK, GE ;

WEI, Y .

JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (22) :5813-5818

[3]

Green A. G., 1910, J CHEM SOC, V97, P2388

[4] Aniline-black and allied compounds Part II [J].

Green, AG ;

Woodhead, AE .

JOURNAL OF THE CHEMICAL SOCIETY, 1912, 101 :1117-1123

[5] A C-13 CP-MAS NMR INVESTIGATION OF POLYANILINE [J].

HJERTBERG, T ;

SALANECK, WR ;

LUNDSTROM, I ;

SOMASIRI, NLD ;

MACDIARMID, AG .

JOURNAL OF POLYMER SCIENCE PART C-POLYMER LETTERS, 1985, 23 (10) :503-508

[6] POLYANILINE - INTERCONVERSION OF METALLIC AND INSULATING FORMS [J].

MACDIARMID, AG ;

CHIANG, JC ;

HALPERN, M ;

HUANG, WS ;

MU, SL ;

SOMASIRI, NLD ;

WU, WQ ;

YANIGER, SI .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1985, 121 (1-4) :173-180

[7] POLYANILINE - ELECTROCHEMISTRY AND APPLICATION TO RECHARGEABLE BATTERIES [J].

MACDIARMID, AG ;

YANG, LS ;

HUANG, WS ;

HUMPHREY, BD .

SYNTHETIC METALS, 1987, 18 (1-3) :393-398

[8] ANALYSIS OF DEGRADATION PRODUCTS BY THERMAL VOLATILIZATION ANALYSIS AT SUBAMBIENT TEMPERATURES [J].

MCNEILL, IC ;

ACKERMAN, L ;

GUPTA, SN ;

ZULFIQAR, M ;

ZULFIQAR, S .

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 1977, 15 (10) :2381-2392

[9] THERMAL-DEGRADATION OF STYRENE BUTADIENE DIBLOCK COPOLYMER .1. CHARACTERISTICS OF POLYSTYRENE AND POLYBUTADIENE DEGRADATION [J].

MCNEILL, IC ;

STEVENSON, WTK .

POLYMER DEGRADATION AND STABILITY, 1985, 10 (03) :247-265

[10]

MCNEILL IC, 1967, EUR POLYM J, V3, P409

← 1 2 →