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Rheological behaviour during UV-curing of a star-branched polyester
KTH, Superseded Departments, Polymer Technology.
KTH, Superseded Departments, Polymer Technology.ORCID iD: 0000-0002-8348-2273
KTH, Superseded Departments, Polymer Technology.ORCID iD: 0000-0003-3201-5138
KTH, Superseded Departments, Polymer Technology.ORCID iD: 0000-0002-9372-0829
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2002 (English)In: Progress in organic coatings, ISSN 0300-9440, E-ISSN 1873-331X, Vol. 44, no 1, 63-67 p.Article in journal (Refereed) Published
Abstract [en]

Using a rheometer coupled with an UV-light generator, the viscoelastic behaviour during the fast cure of star-branched polyester is investigated. The 32 arm star polymers consist of a hyperbranched polyester core, Boltorn(TM) and linear grafts of poly(E-caprolactone) (degree of polymerisation: 20-52) with methacrylate end groups. The resins are crystalline and the melting points range from 34 to 50degreesC; films can be formed and cured below 80degreesC. The crossover of G' and G was used as the gel point. The time to reach the gel point, a few seconds, increases linearly with molecular weight.

Place, publisher, year, edition, pages
2002. Vol. 44, no 1, 63-67 p.
Keyword [en]
aliphatic polyester, dendritic, gel point, powder coatings, star polymer, UV, linear viscoelasticity, aliphatic polyesters, gel point, polymers, systems
National Category
Polymer Technologies
Identifiers
URN: urn:nbn:se:kth:diva-22477DOI: 10.1016/S0300-9440(01)00242-9ISI: 000182676800011OAI: oai:DiVA.org:kth-22477DiVA: diva2:341175
Note

QC 20100525 NR 20140804

Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Malmström, EvaJohansson, Mats K. G.Hult, Anders

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