Open AccessUtilization of a chemical-mechanical pulp with improved properties from poplar wood in the composition of packing papers
Author(s) -
Rumyana Kirilova Boeva,
E. Petkova,
Nelly Georgieva,
Lyubov Yotova,
Iskren Spiridonov
Publication year - 2007
Publication title -
bioresources
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 69
ISSN - 1930-2126
DOI - 10.15376/biores.2.1.34-40
Subject(s) - phanerochaete , softwood , hardwood , pulp (tooth) , pulp and paper industry , manganese peroxidase , lignin , chrysosporium , materials science , oxidizing agent , composite material , laccase , chemistry , enzyme , organic chemistry , botany , engineering , medicine , pathology , biology
The aim of the present work is to obtain a chemical-mechanical pulp (CMP) from poplar wood with improved properties, to be used in packing papers in place of more expensive softwood or hardwood pulp. For improving the CMP quality indicators, a preliminary treatment of the pulp has been carried out with a mixture of oxidizing enzymes produced from Phanerochaete chrysosporium, including lignin peroxidase, manganese peroxidase, and laccase. The two types of fiber materials obtained were double-stage bleached and then ground to 30oSR. It was found that preliminary enzyme treatment yielded CMP with improved physical, mechanical, and optical properties. The enzyme-pretreated CMP also refined faster, thus reducing the electricity consumption. Bleached CMP from poplar wood, obtained after preliminary enzyme treatment, could be successfully utilized at levels up to 40% in the composition of various packaging papers.