scholarly journals In situ SEM micro-indentation of single wood pulp fibres in transverse direction

2010 ◽  
Vol 59 (5) ◽  
pp. 345-349 ◽  
Author(s):  
R.-B. Adusumalli ◽  
R. Raghavan ◽  
P. Schwaller ◽  
T. Zimmermann ◽  
J. Michler
Cellulose ◽  
1996 ◽  
Vol 3 (1) ◽  
pp. 189-202 ◽  
Author(s):  
U. Weise ◽  
T. Maloney ◽  
H. Paulapuro
Keyword(s):  

1992 ◽  
Vol 11 (21) ◽  
pp. 1416-1418 ◽  
Author(s):  
A. G. Robertson ◽  
H. F. Jang ◽  
R. S. Seth

2005 ◽  
Vol 584 (1) ◽  
pp. 126-132 ◽  
Author(s):  
Leena-Sisko Johansson ◽  
J.M. Campbell ◽  
Pedro Fardim ◽  
Anette Heijnesson Hultén ◽  
Jean-Philippe Boisvert ◽  
...  

2002 ◽  
Vol 51 (4) ◽  
pp. 325-349 ◽  
Author(s):  
Altaf H. Basta ◽  
Naim A. Fadl ◽  
Salwa L. Abd-El-Messieh

2005 ◽  
Vol 165 (1-4) ◽  
pp. 187-194 ◽  
Author(s):  
Eva B. Thorstad ◽  
Torbjørn Forseth ◽  
Ingar Aasestad ◽  
Finn ØKland ◽  
Bjørn Ove Johnsen

2018 ◽  
Author(s):  
◽  
Marvin Sydney Potgieter

Dissolving wood pulp (DWP) contains high levels of cellulose and has various applications. Production of dissolving wood pulp is accompanied by various challenges such as equipment operational problems and high bleaching costs. These are mainly due to lignin and other impurities contained in wood. Further, these impurities impose threats to the dissolving pulps applications such as the viscose process and the manufacture of finished rayon products. Removal of these contaminants at the early production stages proved effective in meeting by the challenges. Hydrocyclones achieve the separation of heavy and light pulp components in a process known as fractionation. In the case of dissolving wood pulp, hydrocyclones fractionate the pulp fibres into coarse fibres and fine fibres known as fines. Fines are the reject materials and are associated with impurities such as wood resins. Wood pulp was fractionated at 0.8% consistency using a Kadant laboratory hydrocyclone at mass reject rates of 5% and 11%. Pulp properties and application properties were determined and compared to unfractionated pulp. The fractionated pulps showed higher cellulose contents and lower levels of fines and associated resins. Bleaching of the fractionated pulps under a standard ODEDH bleaching sequence showed higher levels of delignification, as measured by brightness, and more favourable application properties. These findings were used to optimise the bleaching sequence by reducing the amount of chlorine dioxide applied in the second chlorine dioxide stage. The optimised bleaching sequence produced pulps with satisfactory fibre and application properties.


2005 ◽  
Vol 495-497 ◽  
pp. 1633-1638 ◽  
Author(s):  
Chris H.J. Davies ◽  
Sang Bong Yi ◽  
Jan Bohlen ◽  
Karl Ulrich Kainer ◽  
Heinz Günter Brokmeier

The crystallographic response to deformation – texture evolution, internal elastic strain, and twin evolution – was measured for three load/orientation variants for AZ31 magnesium alloy extrudate tested in-situ in a synchrotron beamline. Specimens were loaded in tension parallel to the extrudate transverse direction, in compression along the same axis, and in compression parallel to the extrudate normal direction. The crystallographic responses are correlated with the mechanical behaviour of the extrudate.


2011 ◽  
Vol 56 (4) ◽  
pp. 1773-1780 ◽  
Author(s):  
Koji Fushimi ◽  
Takatoshi Shimada ◽  
Hiroki Habazaki ◽  
Hidetaka Konno ◽  
Masahiro Seo

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