Hydrogen peroxide is an environmentally friendly bleaching chemical that widely used in alkaline media the pulp and paper industry. In this study, unconventional reaction conditions of conventional P-stage were performed to evaluate its effect on cellulose. The objective was “tailor” cellulose degradation according different applications, such as dissolving pulps. Different operating studied: p...

the effect of bleaching with sodium hypochlorite, as one of the most important parameters in obtaining optimal alpha cellulose pulp from cotton linter was studied. in this respect, unbleached cotton linter pulp was prepared from parchin chemical industry co., bleached by hea sequence in ph=9, 11 and 13; and then its chemical structures properties such as alpha cellulose, degree of polymerizatio...

A facile cellulose solvent 1,3-diallyl-2-ethylimidazolium acetate ([AAeim][OAc]) with high electrical conductivity has been designed and synthesized for the first time, via a quaternization reaction and ion exchange method. The dissolution characteristics of cellulose in this solvent were studied in detail. Meanwhile, the co-solvent system was designed by adding an aprotic polar solvent dimethy...

The increasing demand for cellulosic fibres is continuously driven by the growing earth population and requirements of textile industry. annual cotton production ca. 25 million tons no longer enough to meet market demands. This gap progressively filled regenerated derived from dissolving pulp. conventional industrial process viscose far being environmentally friendly due use hazardous reagents....

Abstract The energy demand to produce cellulose nanofibrils, CNFs, is high and additionally the cost of starting material, pulp, substantial as purity dissolving pulp generally used. Pulps aimed for board paper are produced at higher yield they contain hemicelluloses and, in case unbleached lignin, would be a more economical material CNFs. It interest understand how presence hemicellulose ligni...

A pre-hydrolysate is an aqueous stream obtained during the production of hardwood kraft dissolving pulp. It rich in sugars and contains dissolved organic matters. The purpose this study to investigate optimization lignin recovery from wood pre-hydrolysates characterize extracted lignin. optimal conditions for extraction have been determined be (a) a filtration temperature 40 °C, (b) sulfuric ac...

Moso bamboo (Phyllostachys pubescens) is a non-wood and non-edible biorefinery resource extremely important for the development of dissolving pulp as material regenerated cellulose fiber. However, contains high amount xylan compared to hardwoods. This study aimed at finding suitable conditions producing good quality from moso stem using combination prehydrolysis non-sulfur alkali cooking elemen...