Results 21 to 30 of about 10,608,979 (207)
Filament spinning of unbleached birch kraft pulps: Effect of pulping intensity on the processability and the fiber properties [PDF]
Carbohydrate Polymers, 2018 Man-made lignocellulosic fibres were successfully prepared from unbleached birch kraft pulps by using the Ioncell-F technology. Pulps with different lignin content were produced by tailored kraft pulping with varying intensity. The degree of polymerization of the pulps was adjusted by acid-catalyzed hydrolysis and electron beam treatment.
Stubb, Jonas +6 more
openaire +4 more sources
The Effect of Anthraquinone in the Kraft Pulping Process [PDF]
, 1987 Due to current attitudes arid regulations concerning the odorous emission of mercaptans from the Kraft pulping process, new technology must be developed to enable the process to be run at lower sulfide levels. The use of cyclic-keto compounds, as pulping
Stoll, Carl W.
core +1 more source
Impact of lignin and carbohydrate chemical structures on degradation reactions during hardwood kraft pulping processes [PDF]
BioResources, 2013 Most studies aimed at determining rates of hardwood delignification and carbohydrate degradation have focused on understanding the behavior of a single wood species.
Ricardo B. Santos +3 more
doaj
Deep eutectic solvent pulping from sorghum stalks
Maderas: Ciencia y Tecnología, 2022 Deep eutectic solvents are characterized as natural, green, biodegradable, non-flammable, non-volatile, non-toxic, odorless, colorless, easy to prepare, and easy to recycle after use.
Sezgin Koray Gülsoy +2 more
doaj +1 more source
The Development of Defoamer for Kraft Pulping Process
JAPAN TAPPI JOURNAL, 2004 苛性ソーダと硫化ソーダを用いて,木材チップを高温高圧下で蒸解し,パルプを取り出す方法をクラフトパルプ法(KP法)という。このとき,化学的に変性したリグニンがアルカリ液中に溶出する。このアルカリ液は黒液と呼ばれ,溶出したリグニンが界面活性をもつために非常に泡立ちやすい性質になっている。クラフトパルプ製造工程ではこの黒液がパルプの希釈水や洗浄水,分散液として循環使用されるため,泡が大量に発生する。泡はパルプの洗浄速度を下げ生産性が低下するほか,洗浄効率を低下させパルプの白色度が低下するなどパルプの品質に悪影響を及ぼす。そこで,泡をコントロールすることは,パルプの生産性と品質を安定化させために重要なポイントとなる。泡をコントロールする方法には機械的方法と化学的方法があるが ...
openaire +1 more source
Carbohydrate Polymer Technologies and ApplicationsThis study focuses on the chemical composition, physicochemical properties, water-holding capacity, thermal behaviour, and physical and mechanical characteristics of native bamboo species in Malaysia.
H.S.N. Hawanis +7 more
doaj +1 more source
ANTHRAQUINONE ADDITION IN THE ALKALINE PULPING OF Eucalyptus saligna
Ciência Florestal, 2009 The present work evaluated different alkaline pulping conditions for Eucalyptus saligna wood. The objective was to evaluate the influence of the anthraquinone (AQ) on the reduction of the total reduced sulfur (TRS) in the aerial emissions, by reducing ...
Lúcia Helena Jerônimo +2 more
doaj +1 more source
Biomass FuturesSoftwood kraft pulping is constrained by the competing requirements of efficient delignification and preservation of carbohydrate yield, which are key indicators of industrial process operations.
Sk Yasir Arafat Siddiki +3 more
doaj +1 more source
Scientific Reports, 2023 This work deals with providing a green pulping process of rice straw with zero waste discharged, via valorization of its by-product as a promising precursor for production of carbon nanostructures.
Vivian F. Lotfy +4 more
doaj +1 more source
Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies
Advanced Functional Materials, EarlyView.Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke +3 more
wiley +1 more source