Correlation between the production parameters of unsaturated polyesters with the aim to control the polyesterification process

Simitzis, J

dc.contributor.author	Simitzis, J	en
dc.date.accessioned	2014-03-01T01:07:06Z
dc.date.available	2014-03-01T01:07:06Z
dc.date.issued	1988	en
dc.identifier.issn	0014-3057	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/9798
dc.subject.classification	Polymer Science	en
dc.title	Correlation between the production parameters of unsaturated polyesters with the aim to control the polyesterification process	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0014-3057(88)90131-0	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0014-3057(88)90131-0	en
heal.language	English	en
heal.publicationDate	1988	en
heal.abstract	The progress of the production of unsaturated polyesters, based on various unsaturated and saturated acids and anhydrides in various proportions without added catalyst, was studied by determining the amount of water produced during the reaction. It was found that the amount of water must be corrected for the propylene glycol, which is also removed from the reaction medium during the polyesterification. The loss of propylene glycol must be reduced, otherwise the stoichiometry of the reaction is changed so that the reaction could not proceed. This loss can be limited if a slow heating program is used during the first stage of the polyesterification. In order to minimize the total time of the polyesterification, the heating rate can be increased after a period experimentally estimated. A mathematical model for the polyesterification based on the production parameters (e.g. the heating program) and on the kinetic parameters is proposed. This model can be used if there is continuous separation and measurement of the water. © 1988.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	European Polymer Journal	en
dc.identifier.doi	10.1016/0014-3057(88)90131-0	en
dc.identifier.isi	ISI:A1988L053000015	en
dc.identifier.volume	24	en
dc.identifier.issue	1	en
dc.identifier.spage	87	en
dc.identifier.epage	92	en