1993
DOI: 10.1016/0032-3861(93)90158-7
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Free-radical crosslinking copolymerization of styrene/unsaturated polyester resins: 3. Kinetics-gelation mechanism

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Cited by 47 publications
(34 citation statements)
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“…It is well known that free-radical polymerization of multifunctional monomers forms heterogeneous polymer networks, leading to microgel formation [8,[16][17][18][19][20][21]. Such entities are a result of strong intramolecular crosslinking of the growing macroradicals.…”
Section: Mechanism For Gelationmentioning
confidence: 99%
“…It is well known that free-radical polymerization of multifunctional monomers forms heterogeneous polymer networks, leading to microgel formation [8,[16][17][18][19][20][21]. Such entities are a result of strong intramolecular crosslinking of the growing macroradicals.…”
Section: Mechanism For Gelationmentioning
confidence: 99%
“…In one case, pre-gel and post-gel stages have been proposed.8 Five stages, induction, microgel formation, transition with or without phase separation, macrogelation and post-gelation, have also been suggested. 9 During the induction stage no polymer formation and no rheological changes are observed. During the microgel formation stage, also, no measurable rheological changes occur.9 At the gel point the resin system transforms suddenly from a viscous liquid to an elastic gel.…”
Section: Discussionmentioning
confidence: 96%
“…Comparado con otros monómeros vinílicos, el estireno es especialmente indicado para la copolimerización por radicales con las cadenas poliéster insaturado [Funke 1983, Hsu 1993a, Hsu 1993b, de modo que la mayoría de resinas poliéster insaturado se comercializan en forma de soluciones en estireno. Para la copolimerización, cada doble enlace de los segmentos de poliéster reacciona en promedio con dos moléculas de estireno monómero para enlazar con la cadena contigua de Figura II.7.…”
Section: Panorama Científico 37unclassified
“…En las resinas termoestables podemos diferenciar las que endurecen por copolimerización de radicales, como por ejemplo, las resinas de poliéster insaturado (UP), viniléster (VE) u otros sistemas con dobles enlaces en su estructura [Hsu 1993a, Hsu 1993b]. La velocidad de la polimerización por radicales es elevada lo que hace posible, en general, tiempos cortos de endurecimiento.…”
Section: Matrices Termoestablesunclassified
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