Results 11 to 20 of about 31,897 (286)

Enhanced Effect of NaOH/Thiourea/Urea Aqueous Solution on Paper Strength of High Yield Pulp

open access: yesBioResources, 2014
In this work, the thermomechanical pulp of Pinus massoniana was pretreated with a NaOH/thiourea/urea aqueous solution to promote fiber bonded area and to increase paper strength.
Rui Zhai, Xiaofan Zhou
doaj   +1 more source

Preparation of Wet Strength Paper from Filter Paper with NaOH-Thiourea-Urea Aqueous Solution

open access: yesBioResources, 2014
In this work, wet strength paper was prepared from quantitative filter paper pretreated with NaOH-thiourea-urea aqueous solution. The effects of alkali concentration, soaking time, freezing time, and washing time were evaluated through single factor ...
Rui Zhai, Yue Yuan, Xiaofan Zhou
doaj   +1 more source

Black Liquor Oxidation as a Means of Efficient Chemical Recovery in Paper Mills

open access: yesEngineering Proceedings, 2023
The chemical recovery cycle is essential for every pulp mill producing pulp via chemical pulping. The purpose of this cycle is to recover inorganic chemicals used for pulping that can facilitate heat and electric energy cogeneration.
Miroslav Variny
doaj   +1 more source

Modeling of acetosolv pulping of oil palm fronds using response surface methodology and wavelet neural networks [PDF]

open access: yes, 2019
Mathematical models based on response surface methodology (RSM) and wavelet neural networks (WNNs) in conjunction with a central composite design were developed in order to study the influence of pulping variables viz. acetic acid, temperature, time, and
Ibrahim, Mazlan   +4 more
core   +1 more source

Transparent and Water-Resistant Composites Prepared from Acrylic Resins ABPE-10 and Acetylated Nanofibrillated Cellulose as Flexible Organic Light-Emitting Device Substrate

open access: yesNanomaterials, 2018
Acetylated nanofibrillated cellulose (ANFC)/acrylic resin ABPE-10 composite film was prepared by impregnating ABPE-10 into ANFC films under negative pressure, which can enhance properties of ANFC films by forming an interpenetrating polymer network ...
Xueping Song   +5 more
doaj   +1 more source

A Lignin-containing Hemicellulose-based Hydrogel and its Adsorption Behavior

open access: yesBioResources, 2016
A lignin-containing hemicellulose-based hydrogel was prepared from acylated hemicellulose and acrylic acid by free radical polymerization reaction, initiated by ammonium persulfate and N,N,N',N'-tetramethyl-ethane-1,2-diamine in the presence of sodium ...
Xiyi Song, Fangeng Chen, Shangjun Liu
doaj   +1 more source

Modifying the Refining Energy Consumption of Chemi-Mechanical Pulping with NaOH-Thiourea-Urea Aqueous Solution

open access: yesBioResources, 2015
To reduce the refining energy consumption of chemi-mechanical pulping, treatment with NaOH-thiourea-urea aqueous solution was studied in this work. By means of single-factor experiments, the effects of alkali dosage, soaking time, and freezing time were ...
Rui Zhai, Bing Song, Xiaofan Zhou
doaj   +1 more source

Pulp Stem Cell–Mediated Functional Pulp Regeneration [PDF]

open access: yesJournal of Dental Research, 2018
The preservation of vital dental pulp with vasculature and nerve components remains one of the most significant challenges in modern dentistry. Due to the immense potential for neurovascularization, mesenchymal stem cell (MSC) transplantation has shown emerging promise in regenerative medicine and dental translational practice.
B, Sui   +6 more
openaire   +2 more sources

Linerboard made from Soda-Anthraquinone (Soda-AQ) treated coconut coir fiber and effect of pulp beating [PDF]

open access: yes, 2015
The performance of coir fiber in the production of linerboard made from soda-anthraquinone (soda-AQ) pulp was evaluated. Based on chemical analysis, the composition of coir fiber is suitable for the pulping process.
A. Talib, Rosnita   +4 more
core   +2 more sources

Determinantes da adoção da tecnologia de despolpamento na cafeicultura

open access: yesRevista de Economia e Sociologia Rural, 2006
Os cafeicultores de Venda Nova do Imigrante, ES, que em sua maioria são agricultores familiares, têm adotado novas tecnologias para melhorar a qualidade do café arábica produzido na região.
Edson Zambon Monte   +1 more
doaj   +1 more source

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