Novel CED-based rheological test to evaluate pulp reactivity

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussavertaisarvioitu

Tutkijat

Organisaatiot

Kuvaus

Reactivity is an important quality parameter for some grades of pulp,
but its estimation is usually complex and time demanding. The study
verified the possibility to utilize an alternative rheological approach to
investigate pulp reactivity rapidly and with limited effort. 12.5 ml of
pulp at 1.5% consistency was dissolved in 12.5 ml bis(ethylenediamine)
copper(II) hydroxide solution (CED) 1 M. The reaction was moni-
tored by a torque rheogram and its two indices: the optimal dissolution
time (ODT) and the initial dissolution rate (IDR). The method used to
assess pulps either hornified to different extents or subjected to enzy-
matic hydrolysis. ODT was shown to decrease with increasing pulp
swelling, while IDR reported the opposite trend. Both the indices were
shown to be sensitive to pulp treatments. However, the ODT showed
larger differences between hardwood and softwood pulps. The method
had reasonable statistical reliability and required only 1.5 h per
measurement.

Yksityiskohdat

AlkuperäiskieliEnglanti
OtsikkoAdvances in Pulp and Paper Research
TilaJulkaistu - 2017
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaFundamental Research Symposium - Oxford, Iso-Britannia
Kesto: 3 syyskuuta 20178 syyskuuta 2017
Konferenssinumero: 16

Conference

ConferenceFundamental Research Symposium
LyhennettäFRC
MaaIso-Britannia
KaupunkiOxford
Ajanjakso03/09/201708/09/2017

ID: 15681127