Results 151 to 160 of about 1,867 (190)

Thermoformed products from high-density polyethylene and Softwood kraft pulp. [PDF]

Nord Pulp Paper Res J
Desnoes E, Deshaies P, Bideau B, Rubiano J.   +3 more
europepmc   +1 more source

High-Yield Cellulose Nanocrystals from Bleached Eucalyptus Fibers via Maleic Acid Hydrothermal Treatment and High-Pressure Homogenization. [PDF]

Biomacromolecules
Najahi A, Delgado-Aguilar M, Putaux JL, Boufi S.   +3 more
europepmc   +1 more source

Comparison of thermal, rheological properties of Finnish Pinus sp. and Brazilian Eucalyptus sp. black liquors and their impact on recovery units. [PDF]

Sci Rep
Nuncira J, Manoel GF, Ribas Batalha LA, Gonçalves LM, Mendoza-Martinez C, Cardoso M, Vakkilainen EK.   +6 more
europepmc   +1 more source

Valorization of coconut water-derived bacterial cellulose in water treatment: environmentally benign modification to enhance the adsorption capacity for multiple heavy metal ions. [PDF]

RSC Adv
Le HV, Nguyen DDB, Luu PV, Vy UTN, Phan ATH, Nguyen LHT, Ho PH, Nguyen HHM, Nguyen KD.   +8 more
europepmc   +1 more source

Transforming Cellulose for Sustainability: Comprehensive Insights into Modification Approaches and Their Applications. [PDF]

ACS Omega
Gusain R, Chaudhary U, Rana V, Joshi G, Gupta PK, Bachheti RK, Worku LA.   +6 more
europepmc   +1 more source

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Residual Lignin in Unbleached Kraft Pulp. Part 2. -Analysis of Unbleached Kraft Pulp by New Permethylation Method-

Journal of Wood Chemistry and Technology, 1987
Abstract Unbleached kraft pulp (UKP), its residue after extraction with concentrated alkali (α-UKP), bleached kraft pulp prepared from UKP (BKP) and its residue after extraction with concentrated alkali (α-BKP) were permethylated with powdered NaOH and CH3I in their SO2-diethylamine (DEA)-dimethylsufoxide (DMSO) solutions.
Akira Isogai, Atsushi Ishizu, Junzo Nakano   +2 more
openaire   +1 more source

Xylanase-Resistant Xylan In Unbleached Kraft Pulp

Journal of Wood Chemistry and Technology, 1996
ABSTRACT A water-soluble chromophoric xylanase-resitant xylan fraction (LF-D) was separated from a hardwood unbleached kraft pulp (UKP) after hydrolysis with a cellulase/ xylanase-membrane bioreactor. LF-D contained over 70% unremovable inorganic atoms including Si, Na, and S, together with a β-1,4- linked xylan.
Takashi Watanabe, Keigo Mikame, Yoichi Honda, Masaaki Kuwahara   +3 more
openaire   +1 more source

Surface characterization of unbleached kraft pulps by means of ESCA

Cellulose, 1994
The effect of digestion conditions (amount of effective alkali, digestion time) on the surface compositions of unbleached softwood (Pinus sylvestris) kraft pulp has been investigated by electron spectroscopy for chemical analysis (ESCA). The quantities monitored were the angular dependence of the total O/C ratio, the relative amounts of carbons in ...
Janne Laine, Per Stenius, Gilbert Carlsson, G�ran Str�m   +3 more
openaire   +1 more source

Variation of Phenolic Hydroxyl Contents in Unbleached Kraft Pulps

hfsg, 1995
The content of phenolic hydroxyl groups in the unbleached kraft pulp residual lignin was determined in situ by periodate oxidation method. This functional group has been shown to increase steadily with the extent of kraft delignification throughout the entire pulping process.
Yuan-Zong Lai, Sung-Phil Mun, Su-ge Luo, Hsin-Tai Chen, Mohammed Ghazy, Hui Xu, Jian Er Jiang   +6 more
openaire   +1 more source

Study on Alkali-Accessible Chromophores from Unbleached Kraft Pulp

Holzforschung, 2001
Summary An approach to a chromophore composition study using the direct size-exclusion chromatography (SEC-UV) analysis of an alkaline extract of pulp fibre walls is described. Absorbance in the 290–405 nm range of 2% and 18% NaOH extract from unbleached pulps obtained by conventional and extended kraft delignification of black alder wood ...
T. Bikova, V. Klevinska, T. Eremeeva, A. Treimanis   +3 more
openaire   +1 more source