Structure and reactivity of lignins and associated phenolic acids in wheat straw TMP and CTMP pulps

Billa, E; de Choudens, C; Monties, B

dc.contributor.author	Billa, E	en
dc.contributor.author	de Choudens, C	en
dc.contributor.author	Monties, B	en
dc.date.accessioned	2014-03-01T01:50:24Z
dc.date.available	2014-03-01T01:50:24Z
dc.date.issued	2000	en
dc.identifier.issn	0018-3830	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/26028
dc.subject	wheat straw lignins	en
dc.subject	phenolic acids	en
dc.subject	thioacidolysis	en
dc.subject	hydrogen peroxide bleaching	en
dc.subject	TMP	en
dc.subject	CTMP	en
dc.subject.classification	Forestry	en
dc.subject.classification	Materials Science, Paper & Wood	en
dc.subject.other	HYDROGEN-PEROXIDE	en
dc.subject.other	SYRINGYL LIGNIN	en
dc.subject.other	ETHER LINKAGE	en
dc.subject.other	VARIABILITY	en
dc.subject.other	GUAIACYL	en
dc.subject.other	FRACTIONS	en
dc.subject.other	SYSTEMS	en
dc.subject.other	OXYGEN	en
dc.subject.other	ALKALI	en
dc.title	Structure and reactivity of lignins and associated phenolic acids in wheat straw TMP and CTMP pulps	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2000	en
heal.abstract	The effect of hydrogen peroxide bleaching on the structure of thermomechanical (TMP) and chemother ermechanical (CTMP) wheat straw paper pulps was investigated. The results obtained by thioacidolysis indicated that the TMP treatment did not significantly affect the beta -0-4 structures of lignins whereas, the alkali conditions of sulfonation (CTMP) and bleaching induced the cleavage of the beta -0-4 bonds and an increase in the S/G ratio. Moreover, it was concluded that bleaching and sulfonation are responsible: for the partial solubilisation of the p-coumaric and ferulic acid esters. The ethers of p-coumaric acid are not significantly affected by these treatments whereas, the ethers of ferulic acid are degraded, as shown by acidolysis data. These results underline the structural differences of wheal straw pulps compared to wood pulps.	en
heal.publisher	WALTER DE GRUYTER & CO	en
heal.journalName	HOLZFORSCHUNG	en
dc.identifier.isi	ISI:000165693100012	en
dc.identifier.volume	54	en
dc.identifier.issue	6	en
dc.identifier.spage	637	en
dc.identifier.epage	640	en