Influence of residual polyesterification catalysts on the curing of polyesters

DSpace/Manakin Repository

Show simple item record

dc.contributor.author Simitzis, JCh en
dc.contributor.author Zoumpoulakis, LTh en
dc.contributor.author Soulis, SK en
dc.contributor.author Mendrinos, LN en
dc.date.accessioned 2014-03-01T02:41:54Z
dc.date.available 2014-03-01T02:41:54Z
dc.date.issued 2001 en
dc.identifier.issn 0026-3672 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/30662
dc.subject Catalytic polyesterification en
dc.subject Kinetics of curing en
dc.subject Unsaturated polyester en
dc.subject.classification Chemistry, Analytical en
dc.subject.other adipic acid en
dc.subject.other dicarboxylic acid en
dc.subject.other ketone derivative en
dc.subject.other lead en
dc.subject.other lead dioxide en
dc.subject.other maleic acid en
dc.subject.other metal derivative en
dc.subject.other metal oxide en
dc.subject.other methylketone peroxide en
dc.subject.other naphthenate cobalt en
dc.subject.other phthalic acid en
dc.subject.other polyester en
dc.subject.other resin en
dc.subject.other styrene en
dc.subject.other sulfonic acid derivative en
dc.subject.other toluenesulfonic acid en
dc.subject.other unclassified drug en
dc.subject.other zinc acetate en
dc.subject.other acceleration en
dc.subject.other catalyst en
dc.subject.other chemical analysis en
dc.subject.other color en
dc.subject.other conference paper en
dc.subject.other cross linking en
dc.subject.other differential scanning calorimetry en
dc.subject.other esterification en
dc.subject.other heat transfer en
dc.subject.other kinetics en
dc.subject.other polymerization en
dc.subject.other stoichiometry en
dc.subject.other synthesis en
dc.title Influence of residual polyesterification catalysts on the curing of polyesters en
heal.type conferenceItem en
heal.identifier.primary 10.1007/s006040170049 en
heal.identifier.secondary http://dx.doi.org/10.1007/s006040170049 en
heal.language English en
heal.publicationDate 2001 en
heal.abstract Unsaturated polyesters are synthesized by means of polyesterification, often with catalysts like strong acids, metal oxides and metal-organic salts. Most often, the catalysts used cannot be separated from the bulk of the polyester. Also, some organic or inorganic additives - called fillers - which are used with the polyester in order to decrease cost, affect the curing of the polyester. In this work the effect of residual catalyst on the curing of unsaturated polyester is studied. Unsaturated polyesters were prepared using propylene glycol with a 10% molar excess over stoichiometry and a mixture of dicarboxylic acids, namely maleic acid (unsaturated) adipic acid (saturated) and phthalic anhydride (saturated) at a molar ratio 1:2:2. Lead dioxide, p-toluenesulfonic acid and zinc acetate were used as catalysts, at 0.1% w/w. After the polyesterification, the polymers were diluted with styrene at a proportion of 100:30 w/w. The resins were cured by using MEKP (methylethylketone peroxide) as initiator and CoNp (cobalt naphthenate) as accelerator. Catalysts affect the final color of the polyester. The kinetics of curing of the resins was studied by DSC analysis based on the exothermic peak due to the double bonds breaking to give crosslinked macromolecules. The heat released DeltaH is decreased by the presence of catalyst, while activation energy, the frequency factor and the order of reaction are increased. en
heal.publisher SPRINGER-VERLAG WIEN en
heal.journalName Mikrochimica Acta en
dc.identifier.doi 10.1007/s006040170049 en
dc.identifier.isi ISI:000169798600013 en
dc.identifier.volume 136 en
dc.identifier.issue 3-4 en
dc.identifier.spage 171 en
dc.identifier.epage 174 en

Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record