Chemometric Study on Alkaline Pre-treatments of Wood Chips Prior to Pulping
BioResources, 2016 Alkaline pre-treatments were performed for the production of organics-containing effluents from silver/white birch (Betula pendula/pubescens) and Scots pine (Pinus sylvestris) chips prior to chemical pulping.
Joni Tapani Lehto +6 more
doaj +1 more source
Improvement of a method for the characterization of ultrafiltration membranes by measurements of tracers retention [PDF]
, 2004 The aim of this study is to improve protocols for assessing accurate characteristic retention curve and cut-off of membranes, thus enabling the manufacture and performance of the membrane to be monitored. Different data treatments are considered in order
Aimar, Pierre +3 more
core +2 more sources
Cellulose, 2023 AbstractThe molar masses and molar mass distributions of three commercial regenerated cellulose samples, viscose rayon, Tencel, and Bemliese (or cuprammonium nonwoven), have been determined by dissolution in 8% (w/w) lithium chloride/N,N-dimethylacetamide (LiCl/DMAc) and subsequent size-exclusion chromatography with multi-angle laser-light scattering ...
Yuko Ono +4 more
openaire +1 more source
Molecules, 2017 This paper deals with the use of tetrabutylammonium fluoride/dimethylsulfoxide (TBAF/DMSO) to characterize the molar mass distribution of non-derivatized cellulosic samples by size exclusion chromatography (SEC).
Jérémy Rebière +3 more
doaj +1 more source
Characterization of ultrafiltration membranes by tracer's retention:Comparison of methods sensitivity and reproducibility [PDF]
, 2010 Previous studies have shown that the absolute membrane cut-off and the value quoted by the manufacturers may be very different because of differences in methodologies and testing conditions.
Causserand, Christel +5 more
core +2 more sources
UHMWPE/SBA-15 nanocomposites synthesized by in situ polymerization [PDF]
, 2016 Different nanocomposites have been attained by in situ polymerization based on ultra-high molecular weight polyethylene (UHMWPE) and mesoporous SBA-15, this silica being used for immobilization of the FI catalyst bis [N-(3-tert-butylsalicylidene)-2,3,4,
Adewole +60 more
core +3 more sources
Ball Milling’s Effect on Pine Milled Wood Lignin’s Structure and Molar Mass
Molecules, 2018 The effect of ball milling expressed as the yield of milled wood lignin (MWL) on the structure and molar mass of crude milled wood lignin (MWLc) preparation is studied to better understand the process’ fundamentals and find optimal conditions for ...
Grigory Zinovyev +4 more
doaj +1 more source
On the Ionisation Fraction in Protoplanetary Disks II: The Effect of Turbulent Mixing on Gas--phase Chemistry [PDF]
, 2005 We calculate the ionisation fraction in protostellar disk models using two different gas-phase chemical networks, and examine the effect of turbulent mixing by modelling the diffusion of chemical species vertically through the disk.
Balbus +26 more
core +4 more sources
Kinetics of ethylene polymerization over titanium-magnesium catalysts: The reasons for the observed second order of polymerization rate with respect to ethylene [PDF]
Polyolefins Journal, 2015 The data on the effect of ethylene concentration on polymerization rate for several modifications of modern highly active titanium–magnesium catalysts TiCl4/MgCl2 are presented.
Mikhail Matsko +3 more
doaj +1 more source
Linking the evolution of terrestrial interiors and an early outgassed atmosphere to astrophysical observations [PDF]
, 2019 A terrestrial planet is molten during formation and may remain so if subject to intense insolation or tidal forces. Observations continue to favour the detection and characterisation of hot planets, potentially with large outgassed atmospheres. We aim to
Bower, Dan J. +5 more
core +3 more sources