Influence of biomass on the curing of novolac-composites

Simitzis, J; Karagiannis, K; Zoumpoulakis, L

dc.contributor.author	Simitzis, J	en
dc.contributor.author	Karagiannis, K	en
dc.contributor.author	Zoumpoulakis, L	en
dc.date.accessioned	2014-03-01T01:12:00Z
dc.date.available	2014-03-01T01:12:00Z
dc.date.issued	1996	en
dc.identifier.issn	0014-3057	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11915
dc.subject	Activation Energy	en
dc.subject	Kinetic Parameter	en
dc.subject	Kinetics	en
dc.subject	First Order	en
dc.subject.classification	Polymer Science	en
dc.subject.other	EPOXY LIGNIN POLYBLENDS	en
dc.subject.other	COCONUT HUSK LIGNIN	en
dc.subject.other	RESINS	en
dc.subject.other	PARAMETERS	en
dc.subject.other	DSC	en
dc.title	Influence of biomass on the curing of novolac-composites	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0014-3057(96)00011-0	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0014-3057(96)00011-0	en
heal.language	English	en
heal.publicationDate	1996	en
heal.abstract	Novolac resin (N) was cured with hexamethylenetetramine (hexa) without or with biomass (B). The agricultural/industrial by-product of olive stones was used as biomass. The curing was followed by DSC and i.r.-spectroscopy and the kinetic of curing was performed based on DSC scans. For the cured composites having high amounts of hexa (28.6%), the characteristic peaks of hexa were present, whereas for the material having low amounts of hexa (10%) these peaks disappeared. The composites containing high proportions of novolac (N = 70%) exhibit the same values of the enthalpy changes Delta H and Delta H-m, the latter calculated from the law of mixtures, whereas the composites with high proportion of biomass (B = 30%) show different values of Delta H and Delta H-m. The kinetic parameters of activation energy E and frequency factor k(o) of the total curing reaction of novolac with hexa are almost the same for high amounts of hexa (20%, 28.6%) but are slightly increased with decreased amounts of hexa (10%, 5%). The incorporation of biomass in the mass of novolac-hexa leads to an increase of E and k(o). Generally, the curing reaction for all materials is a first order reaction. Copyright (C) 1996 Elsevier Science Ltd	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	European Polymer Journal	en
dc.identifier.doi	10.1016/0014-3057(96)00011-0	en
dc.identifier.isi	ISI:A1996UU46200008	en
dc.identifier.volume	32	en
dc.identifier.issue	7	en
dc.identifier.spage	857	en
dc.identifier.epage	863	en