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THE PEROXYMONOCARBONATE ANIONS AS PULP BLEACHING AGENTS. PART 1. RESULTS WITH LIGNIN MODEL COMPOUNDS AND CHEMICAL PULPS
PEROXYMONOCARBONATE ANIONS BLEACHING AGENTS LIGNIN MODEL COMPOUNDS CHEMICAL PULPS
2010/10/25
The peroxymonocarbonate mono-anion (HCO4─) is generated when the bicarbonate anion is added to a H2O2 solution. The mono-anion is believed to have a pKa value of ca. 10 and as such would start dissoci...
Wastewater treatment options for paper mills using recycled paper/imported pulps as raw materials: Bangladesh perspective
Pulp and paper mills recycled paper
2010/9/14
Paper sector in Bangladesh is currently expanding day-by-day to meet the increasing demand of industrial, writing/printing and specialty papers. Paper mills have adverse e ects on the environment by p...
Biological response of pulps submitted to different capping materials
Dental pulp capping Biocompatible materials Calcium hydroxide
2009/10/19
Pulp capping is a procedure that comprises adequate protection of the pulp tissue exposed to the oral environment, aiming at the preservation of its vitality and functions. This study evaluated the re...
Properties of Composites of Unbeaten Birch and Pine Sulphate Pulps with Bacterial Cellulose
sulphate pulps bacterial cellulose composites breaking length
2009/6/16
The possibility of modifying the structure and properties of fibrous papermaking pulps with
bacterial cellulose was investigated. For this purpose, three ways of obtaining specific
composites were d...
Modification of Structure and Properties of Fibrous Papermaking Pulps with Bacterial Cellulose. Part I
bacterial cellulose Acetobacter xylinum carbon source structure thermal stability
2009/2/19
In this paper, a method of cultivation and characteristics of obtained bacterial cellulose is presented. It was stated that the greatest increase in the weight of bacterial cellulose takes place after...
Influence of Chemithermomechanical Pulp on the Colour of Pulps Dyed with Direct Dyes
chemical pulp CTMP colour dyeing direct dyes
2009/2/17
The dyeability of chemical pulp and chemithermomechanical pulp (CTMP) and their
mixtures with direct dyes were investigated. It was found that direct dyes were useful
mainly for dyeing paper contain...
Effect of Birch and Pine Fibre Content and Degree of Beating on the Properties of Bleached Sulphate Pulps
bleached sulphate pulps beating, apparent specific volume (bulk) breaking length
2009/2/8
Apparent specific volume changes of bleached birch and pine sulphate pulps, as well as their mixtures in correlation with their basic strength properties (i.e. breaking length and tear index in the be...
Characteristics of Kraft Pine Pulps with Different Degrees of Delignification
kraft pulps degree of delignification morphology of fibres
2009/2/6
A comparison was made of the fractional composition and properties of two kraft pine pulps (conventional and ‘hard’) which differed considerably in their levels of delignification. Severalmethods of a...
Comparison of Different Chemical Pulps from Wheat Straw and Bleaching with Xylanase Pre-Treated ECF Method
Wheat straw biopulping enzyme prebleaching organosolv pulping FT-IR
2009/1/7
Different pulping processes, kraft-anthraquinone (AQ), bio-kraft, soda-AQ, ALCELL, and FORMACELL were studied for wheat straw. Fungal pre-treatment with Ceriporiopsis subvermispora, white rot fungi, w...
CORRELATION BETWEEN IgE AND DIFFERENT STATES OF DENTAL PULPS
CORRELATION BETWEEN IgE DENTAL PULPS
2010/4/29
The presence of immune factors in inflamed dental pulps, suggests that immune responses could participate in disease process. With regard to the presence of significant number of mast cells in pulpiti...