caa a22 4500 463189639 CHVBK 20180406164905.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s10973-006-7747-3 doi (NATIONALLICENCE)springer-10.1007/s10973-006-7747-3 Curing kinetics of amine and sodium hydroxide catalyzed phenol-formaldehyde resins [Elektronische Daten] [N. Gabilondo, M. López, J. Ramos, J. Echeverría, I. Mondragon] The effect of both formaldehyde content and catalyst type used in the synthesis of several resole type phenolic resins has been studied by using differential scanning calorimetry. In this study Kissinger-Akahira-Sunose (KAS), Ozawa-Flynn-Wall (OFW) and Friedman model-free kinetics are applied in order to correlate the dynamic cure behaviour with the mentioned synthesis variables. Strong upward dependency of activation energy on conversion has been detected in all cases up to a maximum value. Lower the formaldehyde content fewer changes in activation energy have been detected, revealing a more homogeneous polymerization. As formaldehyde content increases, stronger variations of energy values have been observed and the maximum value is shifted to lower conversions. By comparing triethylamine and sodium hydroxide catalysts similar behaviour has been observed, with higher energy values and shifting of the maximum in the latter. Friedman approach has been resulted in more convenient and accurate for the energy values determination and KAS method seems useful for the dynamic cure prediction of that type of thermoset. Springer Science+Business Media, LLC., 2007 catalysts nationallicence differential scanning calorimetry nationallicence formaldehyde/phenol ratio nationallicence model-free kinetics nationallicence phenol-formaldehyde resole resins nationallicence polymerization prediction nationallicence Gabilondo N. Materials+Technologies' Group. Dpto. Ing. Química y M. Ambiente, Escuela Univ. Politécnica, Universidad País Vasco/Euskal Herriko Unibertsitatea Plza. Europa, 1, 20018, Donostia/San Sebastián, Spain aut López M. Materials+Technologies' Group. Dpto. Ing. Química y M. Ambiente, Escuela Univ. Politécnica, Universidad País Vasco/Euskal Herriko Unibertsitatea Plza. Europa, 1, 20018, Donostia/San Sebastián, Spain aut Ramos J. Materials+Technologies' Group. Dpto. Ing. Química y M. Ambiente, Escuela Univ. Politécnica, Universidad País Vasco/Euskal Herriko Unibertsitatea Plza. Europa, 1, 20018, Donostia/San Sebastián, Spain aut Echeverría J. Hexion Specialty Chemicals Ibérica S.A.Ctra, Navarra Epele, 39, 20120, Hernani, Spain aut Mondragon I. Materials+Technologies' Group. Dpto. Ing. Química y M. Ambiente, Escuela Univ. Politécnica, Universidad País Vasco/Euskal Herriko Unibertsitatea Plza. Europa, 1, 20018, Donostia/San Sebastián, Spain aut Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 90/1(2007-10-01), 229-236 1388-6150 90:1<229 2007 90 10973 https://doi.org/10.1007/s10973-006-7747-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-006-7747-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gabilondo N. Materials+Technologies' Group. Dpto. Ing. Química y M. Ambiente, Escuela Univ. Politécnica, Universidad País Vasco/Euskal Herriko Unibertsitatea Plza. Europa, 1, 20018, Donostia/San Sebastián, Spain aut NATIONALLICENCE 700 1- López M. Materials+Technologies' Group. Dpto. Ing. Química y M. Ambiente, Escuela Univ. Politécnica, Universidad País Vasco/Euskal Herriko Unibertsitatea Plza. Europa, 1, 20018, Donostia/San Sebastián, Spain aut NATIONALLICENCE 700 1- Ramos J. Materials+Technologies' Group. Dpto. Ing. Química y M. Ambiente, Escuela Univ. Politécnica, Universidad País Vasco/Euskal Herriko Unibertsitatea Plza. Europa, 1, 20018, Donostia/San Sebastián, Spain aut NATIONALLICENCE 700 1- Echeverría J. Hexion Specialty Chemicals Ibérica S.A.Ctra, Navarra Epele, 39, 20120, Hernani, Spain aut NATIONALLICENCE 700 1- Mondragon I. Materials+Technologies' Group. Dpto. Ing. Química y M. Ambiente, Escuela Univ. Politécnica, Universidad País Vasco/Euskal Herriko Unibertsitatea Plza. Europa, 1, 20018, Donostia/San Sebastián, Spain aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 90/1(2007-10-01), 229-236 1388-6150 90:1<229 2007 90 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer