Rheological behaviour during UV-curing of a star-branched polyester
2002 (English)In: Progress in organic coatings, ISSN 0300-9440, Vol. 44, no 1, 63-67 p.Article in journal (Refereed) Published
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.
aliphatic polyester, dendritic, gel point, powder coatings, star polymer, UV, linear viscoelasticity, aliphatic polyesters, gel point, polymers, systems
IdentifiersURN: urn:nbn:se:kth:diva-22477DOI: 10.1016/S0300-9440(01)00242-9ISI: 000182676800011OAI: oai:DiVA.org:kth-22477DiVA: diva2:341175
QC 20100525 NR 201408042010-08-102010-08-102015-02-23Bibliographically approved