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Reversible lignin stabilization in traditional aqueous pulping conditions using boric acid
Luterbacher J +10 more
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Swelling of mechanical pulp fines
Cellulose, 1999The objective of the study was to determine the swelling of different types of mechanical pulp fines. The physical and chemical characteristics of the fines were also examined. It was found that the degree of swelling correlates with the proportion of fibrillar material, that is fibrillar content of the fines.
Kari Luukko, Thad C. Maloney
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Immune Defense Mechanisms of the Dental Pulp
Critical Reviews in Oral Biology & Medicine, 1998Defense reactions of the dentin/pulp complex involve a variety of biological systems, in which the immune system plays a pivotal role. The knowledge of the organization and function of pulpal immunocompetent cells has been sparse, but in recent years a significant body of information of immune mechanisms in general has provided a footing for ...
M, Jontell +3 more
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Experiments on Specific Energy and Pulping Quality of Extrusion Mechanical Pulping
Key Engineering Materials, 2011In order to select rational screw parameters for improving the pulping quality, efficiency and reducing specific energy, the paper studied the effects of the rotational speed of screw, lead number of reverse thread and slot width of reverse flight of the twin screw pulping extruder (TSPE) on specific energy, flux and pulping quality (reject rate, fiber
Xiao Yang Shen +3 more
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Characterisation of mechanical pulp fines from alkaline peroxide pulping of EFB
AIP Conference Proceedings, 2012EFB (empty fruit bunch) was subjected to alkaline peroxide pulping for generation of fibrous mass as raw material for the making of pulp-based products. During refining, co-produced fines were collected by fractionation on square-mesh screens of 200-, 250-, 300- and 400- mesh sizes, placed at the refining discharge by order of increasing mesh. Each set
Nurul Hasanah Kamaludin +2 more
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Mechanical extraction of palmyrah fruit pulp
Bioprocess Engineering, 1993A mechanical palmyrah fruit pulp extractor was constructed which had square blades fitted at an angle to the vertical shaft through rods. The shaft was connected with a 0.75 horse power motor. A gear box was used to regulate the rpm. Using this extractor, the manual and mechanical extraction of pulp from palmyrah fruit were compared. The rate and cost (
S. Mahendran +2 more
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Mechanical Properties of Molded Pulp Pallet
Applied Mechanics and Materials, 2011Molded pulp material has been paid much attention for the cushioning package, yet there is no perfect method for evaluate the cushioning properties of different molded pulp configurations, which hampers the advance of molded pulp industry. In this paper an Equivalent Area Theory are put forward in order to study the cushioning properties of this ...
Hong Tao Wang +2 more
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Synergistic effects between chemical mechanical pulps and chemical pulps from hardwoods
TAPPI Journal, 2007Chemical pulps and chemical mechanical pulps from different hardwoods were compared for intrinsic and other pulp properties. Comparisons were made separately and in combination with these two types of pulps. The results showed that hardwood chemical mechanical pulps, such as preconditioned refiner chemical alkaline per-oxide mechanical pulp (P-RC APMP),
ERIC C. XU, YAJUN ZHOU
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Electro-brightening of mechanical pulp
2009The electro-oxidation of sodium carbonate (Na₂C0₃) to percarbonate (C₂O₆²⁻), with its subsequent hydrolysis was investigated as a means to produce peroxide and to drive the in-situ electrochemical brightening of thermo-mechanical pulp. The conditions for the electrochemical production of peroxide and factors that affected the in-situ electrochemical ...
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