Electronic Resource
High Pressure Synthesis of Conducting Polymers
| العنوان: | High Pressure Synthesis of Conducting Polymers |
|---|---|
| المؤلفون: | Young, David, Busfield, Ken, Neuendorf, Annette J |
| بيانات النشر: | Griffith University Brisbane 2004 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | Full Text Thesis (PhD Doctorate) Doctor of Philosophy (PhD) School of Science An experimental investigation of the high pressure synthesis of water soluble, self doping conducting polymers is presented. 2- And 3-aminobenzenesulfonic acid and the respective sodium sulfonates have been polymerised. Optimal polymerisation conditions have been determined with respect to yield, conductivity and molecular weight. Reaction parameters such as oxidant, pressure, catalysts, reaction time and temperature and the use of additives were investigated. The minimum pressure required for polymerisation was 7 kbar. An increase in pressure had a negligible effect on polymer characteristics. The polymers were generated in aqueous, non-acidic media, to ensure they were selfdoping when characterised. Conductivities of between 10-6 Scm-1 and 10-3 Scm-1 were measured. The sulfonate salts reacted faster than the sulfonic acids and for both a longer reaction time resulted in higher yields and conductivities. These polymers were completely water soluble, of high molecular weight and able to be cast as thin films. The arylamines 5- and 8-aminonaphthalene-2-sulfonic acid and their respective sodium sulfonates were polymerised at elevated pressure. The naphthalene sulfonate salts polymerised at atmospheric pressure, but displayed a higher molecular weight when reacted under pressure. Generally the naphthalene monomers reacted similarly to the benzene monomers, although there were some differences. Conductivity and yield decreased with increased reaction times and the use of 0.1M equivalents of ferrous sulfate had an negligible effect on the polymers. The polynaphthalenes were highly water soluble, self doping and had conductivities in the order 10-5 to 10-3 Scm-1. A measurement of the activation volume for the polymerisation of 2-methoxyaniline and sodium 8-aminonaphthalene-2-sulfonate was performed. These were determined to be -44 ± 3 cm3mol-1 and -62 ± 10 cm3mol-1 respectively. These large negative values are consistent with rate limiting monomer oxidation. |
| مصطلحات الفهرس: | polymers, polymerization, polymerisation, self doping conductive polymers, sulfonic acids, sodium sulfonates, Griffith thesis |
| الاتاحة: | Open access content. Open access content The author owns the copyright in this thesis, unless stated otherwise. Public The author owns the copyright in this thesis, unless stated otherwise. |
| ملاحظة: | application/pdf English |
| Other Numbers: | LG0 oai:research-repository.griffith.edu.au:10072/366536 10.25904/1912/2910 1327829952 |
| المصدر المساهم: | GRIFFITH UNIV From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1327829952 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |