Controlled radical polymerization at pressures up to 2000 bar

Minaux, Eric

dc.contributor.advisor	Buback, Michael Prof. Dr.	de
dc.contributor.author	Minaux, Eric	de
dc.date.accessioned	2001-07-26T15:07:03Z	de
dc.date.accessioned	2013-01-18T10:40:01Z	de
dc.date.available	2013-01-30T23:51:25Z	de
dc.date.issued	2001-07-26	de
dc.identifier.uri	http://hdl.handle.net/11858/00-1735-0000-0006-AE8D-8	de
dc.identifier.uri	http://dx.doi.org/10.53846/goediss-2205
dc.format.mimetype	application/pdf	de
dc.language.iso	eng	de
dc.rights.uri	http://webdoc.sub.gwdg.de/diss/copyrdiss.htm	de
dc.title	Controlled radical polymerization at pressures up to 2000 bar	de
dc.type	doctoralThesis	de
dc.title.translated	Kontrollierte radikalische Polymerization bis zu Drücken von 2000 bar	de
dc.contributor.referee	Hoyermann, Karlheinz Prof. Dr.	de
dc.date.examination	2001-05-01	de
dc.subject.dnb	540 Chemie	de
dc.description.abstracteng	High-pressure controlled polymerizations of styrene and of butyl acrylate were successfully performed using different nitroxides as mediator. Narrow polydispersities and molecular weights close to the theoretical predictions are observed, irrespective of the applied pressure. High pressure allows for a significant enhancement of polymerization rate. High pressure also allows to carry out CRP at relatively low temperature and allows to produce high-molecular-weight material with narrow polydispersity. Rate coefficients were estimated by simulations using the software package PREDICI®. Attempts to control high-pressure ethene polymerization were not successful. Even at fairly high temperature, the dormant species will not readily dissociate. Further increase of temperature is associated with mediator decomposition and with a large enhancement of transfer to monomer reactions. Both effects exclude CRP. PREDICI® simulations and ab-initio calculations allow for the estimation of bond dissociation energies in alkoxyamines. It turns out that in several cases the N-O bond is less stable than the C-O bond which also destroys control of ethene polymerization.	de
dc.subject.topic	Mathematics and Computer Science	de
dc.subject.ger	Hochdruck	de
dc.subject.ger	Nitroxide	de
dc.subject.ger	Ethen	de
dc.subject.ger	TEMPO	de
dc.subject.ger	SG1	de
dc.subject.ger	Styrol	de
dc.subject.ger	kontrollierte radikalische Polymerization	de
dc.subject.eng	high pressure	de
dc.subject.eng	nitroxide	de
dc.subject.eng	ethen	de
dc.subject.eng	TEMPO	de
dc.subject.eng	SG1	de
dc.subject.eng	styrene	de
dc.subject.eng	controlled radical polymerization	de
dc.subject.eng	CRP	de
dc.subject.bk	35.10	de
dc.identifier.urn	urn:nbn:de:gbv:7-webdoc-1046-4	de
dc.identifier.purl	webdoc-1046	de
dc.affiliation.institute	Fakultät für Chemie	de
dc.subject.gokfull	SD	de
dc.identifier.ppn	332430286

Dateien

Name:minaux.pdf

Größe:1.826Mb

Format:PDF

Beschreibung:Dissertation

Öffnen

Name:: minaux.pdf
Größe:: 1.826Mb
Format:: PDF
Beschreibung:: Dissertation

Öffnen

Das Dokument erscheint in:

Fakultät für Chemie (inkl. GAUSS) [701]

Zur Kurzanzeige