Results 11 to 20 of about 588 (182)

Cellulose Nanofibril (CNF) Films and Xylan from Hot Water Extracted Birch Kraft Pulps

Applied Sciences, 2019
The effects of xylan extraction from birch kraft pulp on the manufacture and properties of cellulose nanofibril (CNF) films were here investigated. Hot water extractions of bleached and unbleached kraft pulps were performed in a flow-through system to ...
Marc Borrega, Hannes Orelma
doaj   +2 more sources

REFLECTANCE UV-VIS AND UV RESONANCE RAMAN SPECTROSCOPY IN CHARACTERIZATION OF KRAFT PULPS

BioResources, 2009
Reflectance UV-Vis spectroscopy and UV resonance Raman (UVRR) spectroscopy are both nondestructive techniques that are applicable to study trace concentrations of lignin in-situ.
Anni Lähdetie, Tiina Liitiä, Tarja Tamminen, Anna-Stiina Jääskeläinen   +3 more
doaj   +2 more sources

Enhancing antimicrobial activity in unbleached kraft pulp using laccase and phenolic compounds [PDF]

BioResources, 2013
Unbleached kraft pulp fibers were reacted with laccase in the presence of different phenolic compounds (isoeugenol, butyl p-hydroxybenzoate, p-coumaric acid, and ferulic acid) in order to confer them with new properties.
Jicheng Pei, Ying Zhang, Fangdong Zhang, Xiuling Yu, Xiaoting Yan   +4 more
doaj   +1 more source

DESORPTION OF METAL IONS FROM KRAFT PULPS. PART 1. CHELATION OF HARDWOOD AND SOFTWOOD KRAFT PULP WITH EDTA

BioResources, 2010
Chelation of unbleached and oxygen bleached hardwood and softwood kraft pulps with EDTA was studied. The main focus was on the desorption of magnesium, manganese, and iron due to their impact in TCF-bleaching.
Kim Granholm, Leo Harju, Ari Ivaska
doaj   +1 more source

Fractionation of Wood Biomass With Thiolactic Acid and Choline Chloride-Based Solvent Into White Lignin for Sustainable Cooling Applications. [PDF]

ChemSusChem
A novel and highly efficient wood biomass fractionation method was developed to produce white lignin, exhibiting the brightest color reported to date. The process yielded white lignin with high yield, excellent visible light reflectance, and elevated infrared emissivity, highlighting its potential as an active material for passive radiative cooling ...
Sirviö JA, Liao M, Arjmandi D, Haverinen J, Wu R, Jonsson MP, Xu C, Ämmälä A, Räty JP.   +8 more
europepmc   +2 more sources

One-Step Extreme Delignification to Simultaneously Produce High-Purity Cellulose and Phenolated Lignin. [PDF]

ChemSusChem
An extreme delignification strategy using a formic acid–phenol–water system enables the simultaneous production of high‐brightness cellulose fibers and highly reactive phenolic lignin from various biomass sources, providing a sustainable pathway for high‐value utilization of lignocellulosic biomass.
Zhang Y, Wu R, Ni S, Chen X, Wang Z, Li Z, Fu Y, Qin M, Xu C.   +8 more
europepmc   +2 more sources

EVALUATION OF LINERBOARD PROPERTIES FROM MALAYSIAN CULTIVATED KENAF SODA-ANTHRAQUINONE PULPS VERSUS COMMERCIAL PULPS

BioResources, 2010
Malaysian cultivated kenaf has been identified as a suitable raw material for linerboard production. This study examines the soda-antraquinone (soda-AQ) pulp of kenaf fibers versus old corrugated container (OCC) and unbleached softwood kraft pulps as the
Ahmad Azizi Mossello, Jalaluddin Harun, Rushdan Ibrahim, Hossien Resalati, Seyed Rashid Fallah Shamsi, Paridah Md Tahir, Mohd Nor Mohad Yusoff   +6 more
doaj   +1 more source

Electrochemical Characteristics of Lignin in CTMP for Paper Battery Electrodes. [PDF]

ChemSusChem
Lignin naturally present in papers made of unbleached mechanical pulps is electrochemically active. Here, softwood chemi‐thermomechanical pulp (CTMP) is studied as an active cathode material for application in paper batteries. Proof‐of‐concept measurements are shown, and it is found that softwood CTMP fines exhibit competing oxidative electrochemical ...
Isacsson P, Björk E, Capanema E, Granberg H, Engquist I.   +4 more
europepmc   +2 more sources

Effect of H2O2 bleaching with ultrasonication on the properties of thermomechanical pulp and unbleached kraft pulp

Ultrasonics Sonochemistry, 2015
Abstract H2O2 was used in the final stage of a multistage bleaching process to increase ISO brightness by 2–3%, because of the poor selectivity and bleachability. However, concerns about the environmental load of the bleaching process have led to the efficient use of oxygen-derived compounds, with a concomitant decrease in the quantity of chlorine ...
Jin-Ho Seo, Hyoung-Jin Kim
openaire   +2 more sources

Energy Analysis of Bioethanols Produced from Dendrocalamus Latiflorus

Chemical Engineering Transactions, 2013
The Ma bamboo (Dendrocalamus latiflorus Munro) covers 152,300 ha in Taiwan, roughly of 7.2 % the overall forest area. This study calculated the energy and mass balance of Ma bamboo as a feedstock for bioethanol production.
H. Ko C, N. Wang Y, C. Chang F, Y. Lee C, H. Chen W, S. Hwang W   +5 more
doaj   +1 more source