نتایج جستجو برای: dissolving pulp
تعداد نتایج: 23414 فیلتر نتایج به سال:
INTRODUCTION A desirable characteristic of root canal irrigants is the ability of dissolving soft tissues. Sodium hypochlorite, an antibacterial and tissue solvent irrigant used in endodontic treatment is known to be toxic for periapical tissues. Chlorhexidine gluconate, an effective antimicrobial agent, is another irrigant with limited tissue dissolving ability. A mixture of a tetracycline iso...
As an alternative raw material for various cellulose derivatives, the current research studied processing of old corrugated container (OCC) in subsequent stages homogenization (soda cooking) and purification (bleaching with hypochlorite). The properties were characterized four different categories including chemical composition or purity, accessibility, reactivity, structural features. Alkali d...
Two approaches for creating a new all-cellulose composite material have been studied: the biosynthesis of compartmentalised bacterial cellulose fibril aggregates and the compression moulding of commercial chemical wood pulps processed with only water. The objective was to study the structural changes during processing and the complexity of relating the mechanical properties of the final biocomp...
As a pulp bleaching agent, dimethyldioxirane (DMD) is effective and selective. In this study, it was employed as a delignifying agent or as an activating agent for hydrogen peroxide treatment in bleaching acetategrade pulp. Brightness, kappa number, degree of polymerization (DP), and alpha-cellulose content were evaluated to determine the optimal charges of DMD: 2.5% AO, and 4% HSO5, respective...
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