scholarly journals Polymer - Solvent Relation: Swelling and Fibre Morphology

2017 ◽  
Vol 04 (02) ◽  
pp. 27-28
Author(s):  
Adeakin O.A.S ◽  
Popoola V.A ◽  
Ajekwene K.K
Keyword(s):  
Fibre Morphology ◽  
Polymer Solvent

ASPECTS ON POLYMER-SOLVENT EQUILIBRIUM AND DIFFUSION IN POLYMERIC MEMBRANES

2013 ◽  
Vol 12 (8) ◽  
pp. 1583-1591 ◽  
Author(s):  
Eugenia Teodora Iacob Tudose Ioan Mamaliga ◽  
Ciprian Constantin Negoescu ◽  
Nicoleta Bunduc
Keyword(s):  
Polymeric Membranes ◽  
And Diffusion ◽  
Polymer Solvent

Low-consistency refining of CTMP targeting high strength and bulk: effect of filling pattern and trial scale

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Jan-Erik Berg ◽  
Börje Hellstadius ◽  
Mikael Lundfors ◽  
Per Engstrand
Keyword(s):  
High Strength ◽  
Natural Fibre ◽  
Laboratory Scale ◽  
Process Conditions ◽  
Tensile Index ◽  
Filling Pattern ◽  
Basic Objective ◽  
High Bulk ◽  
Fibre Morphology ◽  
Bulk Effect

AbstractChemithermomechanical pulp (CTMP) is often used in central layers of multiply paperboards due to its high bulk and strength. Such a CTMP should consist of well-separated undamaged fibres with sufficient bonding capacity. The basic objective of this work is to optimize process conditions in low-consistency (LC) refining, i. e. to select or ultimately develop new optimal LC refiner filling patterns, in order to produce fibrillar fines and improve the separation of fibres from each other while preserving the natural fibre morphology as much as possible. Furthermore, the aim is to evaluate if this type of work can be done at laboratory-scale or if it is necessary to run trials in pilot- or mill-scale in order to get relevant answers. First stage CTMP made from Norway spruce (Picea abies) was LC refined in mill-, pilot- and laboratory-scale trials and with different filling patterns. The results show that an LR1 laboratory refiner can favourably be used instead of larger refiners in order to characterize CTMP with regard to tensile index and z-strength versus bulk. A fine filling pattern resulted in CTMP with higher tensile index, z-strength and energy efficiency at maintained bulk compared to a standard filling pattern.

scholarly journals Substrate-independent three-dimensional polymer nanosheets induced by solution casting

2021 ◽  
Author(s):  
Cheol Hun Park ◽  
Eun Min Go ◽  
Kyung Min Lee ◽  
Chang Soo Lee ◽  
Sang Kyu Kwak ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Simple Solution ◽  
Solution Casting ◽  
Solvent Interactions ◽  
Comb Copolymer ◽  
Substrate Independent ◽  
Polymer Solvent

Unprecedented substrate-independent polymeric 3D nanosheets were induced via simple solution casting using PEGBEM–POEM comb copolymer. A possible mechanism is the change in the polymer–solvent interactions on the surface.

A New Look at Measurements of Network Density

1986 ◽  
Vol 59 (1) ◽  
pp. 138-141 ◽  
Author(s):  
Robert A. Hayes
Keyword(s):  
Hysteresis Loop ◽  
Interaction Parameters ◽  
Network Density ◽  
Stress Strain ◽  
Solvent Interaction ◽  
Solvent Method ◽  
Strain Data ◽  
Good Agreement ◽  
Polymer Solvent ◽  
New Look

Abstract A two-solvent method for determining the polymer-solvent interaction parameters independently of stress-strain data is described. The values obtained are much lower than those reported previously. Network densities calculated from swelling data and these interaction parameters are in good agreement with those calculated from the return portion of a hysteresis loop at high elongations.

Critical phenomena in a polymer-solvent system: slow neutron transmission technique

Polymer ◽  
1988 ◽  
Vol 29 (6) ◽  
pp. 1010-1015 ◽  
Author(s):  
Yu.B. Mel'nichenko ◽  
V.V. Klepko ◽  
V.V. Shilov
Keyword(s):  
Critical Phenomena ◽  
Slow Neutron ◽  
Solvent System ◽  
Neutron Transmission ◽  
Transmission Technique ◽  
Polymer Solvent

NMR Evidence for Polymer/Solvent Complexes in Thermoreversible Gels

1997 ◽  
Vol 30 (7) ◽  
pp. 2178-2181 ◽  
Author(s):  
Jiří Spěváček ◽  
Miloš Suchopárek
Keyword(s):  
Thermoreversible Gels ◽  
Polymer Solvent

Inverse gas chromatography applications in polymer–solvent systems

1998 ◽  
Vol 148 (1-2) ◽  
pp. 171-188 ◽  
Author(s):  
R.P. Danner ◽  
F. Tihminlioglu ◽  
R.K. Surana ◽  
J.L. Duda
Keyword(s):  
Gas Chromatography ◽  
Inverse Gas Chromatography ◽  
Solvent Systems ◽  
Polymer Solvent
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