Curing of Novolac-Lignocellulosic 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	2014-03-01T01:10:54Z
dc.date.available	2014-03-01T01:10:54Z
dc.date.issued	1995	en
dc.identifier.issn	0959-8103	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11483
dc.subject	CURING	en
dc.subject	DSC	en
dc.subject	FTIR	en
dc.subject	KINETICS	en
dc.subject	NOVOLAC	en
dc.subject	LIGNOCELLULOSIC MATERIALS	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Amines	en
dc.subject.other	Biomass	en
dc.subject.other	Cellulose	en
dc.subject.other	Cellulose derivatives	en
dc.subject.other	Curing	en
dc.subject.other	Differential scanning calorimetry	en
dc.subject.other	Fourier transforms	en
dc.subject.other	Infrared spectroscopy	en
dc.subject.other	Lignin	en
dc.subject.other	Mixtures	en
dc.subject.other	Reaction kinetics	en
dc.subject.other	Kraft lignin	en
dc.subject.other	Novolac-Lignecellulosic composites	en
dc.subject.other	Composite materials	en
dc.title	Curing of Novolac-Lignocellulosic composites	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/pi.1995.210380211	en
heal.identifier.secondary	http://dx.doi.org/10.1002/pi.1995.210380211	en
heal.language	English	en
heal.publicationDate	1995	en
heal.abstract	Novalac resin (N) with hexamethylenetetramine (HTA) was cured with biomass (B) or Kraft lignin (KL) or hydroxymethylated Kraft lignin (KLH) or cellulose (GEL). The agricultural/industrial by-product of olive stones was used as biomass. Kraft lignin, hydroxymethylated Kraft lignin and cellulose were isolated from the biomass. The cure was followed by DSC and IR spectroscopy. Based on the IR spectra of cured materials and their characteristic bands, the proportion of N/B = 50/50 was chosen for the preparation of novolac mixtures with other components. Only N-KLH exhibited values of Delta H higher than Delta H-m, calculated from the law of mixtures, indicating that KLH participates in the cure reaction. The kinetic parameters E and k(0) of the total cure reactions, calculated by DSC scans, increased in the order N < N-KLH < N-B < N-KL < N-CEL. The incorporation of KLH in the mass of N-HTA led to a slight increase in E and k(0). On the other hand, KL, CEL and B acted as diluents in the mass of novolac. Generally, the cure of all materials was a first order reaction, indicating that the cure mechanism of novolac remains the same.	en
heal.publisher	John Wiley & Sons Ltd, Chichester, United Kingdom	en
heal.journalName	Polymer International	en
dc.identifier.doi	10.1002/pi.1995.210380211	en
dc.identifier.isi	ISI:A1995RZ92400011	en
dc.identifier.volume	38	en
dc.identifier.issue	2	en
dc.identifier.spage	183	en
dc.identifier.epage	189	en