Results 91 to 100 of about 274,187 (223)

Influence of residual lignin content on physical and mechanical properties of kraft pulp/pp composites

open access: yesMaderas: Ciencia y Tecnología, 2014
The effect of residual lignin content on the mechanical strength and water absorption of kraft pulp/polypropylene composites was studied. To meet this objective, hornbeam wood chips were converted to kraft pulp at three different alkalinities (15, 20 ...
Majid Kiaei, Behzad Kord, Ramin Vaysi
doaj  

Chemical composition and fiber properties of fast-growing species in Latvia and its potential for forest bioindustry

open access: yesMetsanduslikud Uurimused, 2017
Bioenergy, including energy from wood, currently provides about 9–13% of the total global energy supply. Every fibre of fast-growing wood has a value for its potential use as a material in both pulp and paper and wood chemical industries. The aim of this
Sable Inese   +6 more
doaj   +1 more source

Kraft Pulping of Wheat Straw

open access: yes, 2017
In this paper, pulping of wheat straw with Kraft process was studied. Chemical and morphological properties of wheat straw fibers were also investigated. Chemical properties including cellulose (39.8%), hemicellulose (29.47%), lignin (20.98%), ash (6.27%) and extractives (4.1%) were determined.
openaire   +1 more source

Trend of Bleaching In Kraft Pulp

open access: yesJAPAN TAPPI JOURNAL, 2009
古くから,クラフトパルプの漂白は,塩素,次亜塩素酸塩,二酸化塩素の塩素系薬品を使って行なわれてきた。しかしながら,1980年代の北欧において,バルト海の汚染問題を契機に塩素漂白排水中の有機塩素化合物の環境影響が議論され,1990年代からは多くの国々で塩素漂白が中止され,ECF(Elementary Chlorine Free)漂白法への転換が進んだ。本報告では,クラフトパルプ用漂白剤をその脱リグニン機構に基づいて分類した上で,漂白剤の変遷という観点から,1960年代から今日に至るまでのクラフトパルプ漂白の変遷について述べる。
openaire   +1 more source

EFEITO DOS SÓLIDOS DISSOLVIDOS DA MADEIRA NA BRANQUEABILIDADE E NAS PROPRIEDADES FÍSICO-MECÂNICAS E ÓPTICAS DE POLPA KRAFT BRANQUEADA DE EUCALIPTO

open access: yesCiência Florestal, 2012
Many studies have shown that the yield of kraft pulping can be improved by xylan reabsorption to the pulp during the cooking, and kraft black liquor contains significant fraction of xylan from wood, an important source of these macromolecules.
Dalton Longue Júnior   +1 more
doaj  

Green Process for Xylooligosaccharides Production using an Eucalyptus Kraft Pulp. [PDF]

open access: yesJ Polym Environ, 2023
Henriques PIA   +3 more
europepmc   +1 more source

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