The role of salt on cellulose dissolution in ethylene diamine/salt solvent systems

Cellulose ◽  
2007 ◽  
Vol 14 (3) ◽  
pp. 225-234 ◽  
Author(s):  
Min Xiao ◽  
Margaret W. Frey
Keyword(s):  
Ethylene Diamine ◽  
Cellulose Dissolution ◽  
Solvent Systems

Li+ ion doping into KI-KBH4 solid solvent systems: The role of the BH4− anion

2018 ◽  
Vol 735 ◽  
pp. 1291-1296 ◽  
Author(s):  
Reona Miyazaki ◽  
Yasuto Noda ◽  
Hidetoshi Miyazaki ◽  
Kazuo Soda ◽  
Takehiko Hihara
Keyword(s):  
Ion Doping ◽  
Li Ion ◽  
Solvent Systems

Potential of Functionalized Magnetite (Fe3O4) in Decontamination of Pathogenic Bacteria from Milk

2019 ◽  
Vol 41 (6) ◽  
pp. 1014-1014
Author(s):  
Aneela Hameed Aneela Hameed ◽  
Hafiza Mehvish Mushtaq Hafiza Mehvish Mushtaq ◽  
Saeed Akhtar Saeed Akhtar ◽  
Tariq Ismail Tariq Ismail ◽  
Majid Hussain Majid Hussain ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Magnetic Nanoparticles ◽  
Pathogenic Bacteria ◽  
High Surface ◽  
Nutritional Composition ◽  
Ethylene Diamine ◽  
Precipitation Method ◽  
Magnetite Fe3o4 ◽  
Co Precipitation

Magnetite (Fe3O4) is getting popular due to its super-paramagnetic properties, high biocompatibility and lack of toxicity to humans. Magnetite (Fe3O4) nanoparticles have high surface energy thus these nanoparticles aggregate quickly. This aggregation strongly affects the efficiency of these nanoparticles. So these magnetite nanoparticles are coated with organic or inorganic substance to prevent aggregation. These coatings not only stabilize magnetic nanoparticles but can also be used for further functionalization. The aim of this study was to evaluate the efficiency of functionalized magnetite to remove pathogenic bacteria (E.coli and B.cereus) from milk considering binding capability of magnetite with bacterial cell wall. Magnetite (Fe3O4) was prepared by co-precipitation method and subsequently functionalized with oleic acid (OA) and ethylene diamine (EDA). In present study role of magnetite (Fe3O4) and functionalized magnetite (EDA-Fe3O4, OA-Fe3O4) in removal of pathogenic bacteria (E.coli and B.cereus) from milk was investigated. The morphology of functionalized magnetite was determined by Scanning Electron microscopy (SEM). Their removal efficiency was studied based on time (10, 20 and 30 minutes). Concentration of uncoated magnetite (Fe3O4) and coated magnetite (EDA-Fe3O4, OA-Fe3O4) was fixed at 4mg/50mL. Magnetite was successfully synthesized in range of and#177;3nm. Highest capturing efficiency (74.45%) of oleic acid magnetite (OA-Fe3O4) was observed for Bacillus cereus at 30 minutes. However for Escherichia coli, both ethylene-diamine magnetite (EDA-Fe3O4) and oleic acid magnetite (OA-Fe3O4) showed maximum capturing efficiency (61.65% and 63.91% respectively). It was concluded from the study that magnetite coated with oleic acid and ethylenediamine removed pathogenic bacteria from milk efficiently. However, more research is required to study the effect of these magnetic nanoparticles on nutritional composition of milk.

Oxidation of Unvulcanized Cold Rubber Influence of Adsorption by Carbon Black

1952 ◽  
Vol 25 (3) ◽  
pp. 557-572
Author(s):  
C. W. Sweitzer ◽  
Francis Lyon
Keyword(s):  
Carbon Black ◽  
Surface Chemistry ◽  
Carbon Films ◽  
Cross Linking ◽  
Additional Information ◽  
Rubber Compounds ◽  
Repressive Effect ◽  
Solvent Systems ◽  
Dilute System

Abstract Previous investigations have shown a large difference between the amount of rubber insolubilized by carbon black in dilute solvent systems and in standard mill mixes. The purpose of this study, after reconciling these extremes, was to evaluate the role of adsorption in the insolubilization of rubber in mill-mixed compounds. An adsorption test was employed which eliminated the solvent effect of the dilute system and the mastication effect in mill mixing. Results showed that carbon black, depending on the temperature and atmosphere conditions imposed on the rubber carbon films, represses the scission, cross-linking, and gelation reactions of GR-S X-478. This repressive effect is ascribed to the adsorption and inactivation by the carbon black of the oxidized intermediates through which these various reactions proceed. The magnitude of this effect was found to vary with the type, loading, and surface chemistry of the carbon. This approach not only offers promise as a means for predicting the behavior of carbon black in rubber compounds, but also, because of its applicability to the study of all rubber-carbon systems, offers possibilities of providing additional information on the mechanism of the carbon-rubber bond.

On the role of hydrophobic interactions in cellulose dissolution and regeneration: Colloidal aggregates and molecular solutions

2015 ◽  
Vol 483 ◽  
pp. 257-263 ◽  
Author(s):  
Luis Alves ◽  
Bruno F. Medronho ◽  
Filipe E. Antunes ◽  
Anabela Romano ◽  
Maria G. Miguel ◽  
...  
Keyword(s):  
Hydrophobic Interactions ◽  
Cellulose Dissolution ◽  
Colloidal Aggregates

scholarly journals Efficiency of hydrophobic phosphonium ionic liquids and DMSO as recyclable cellulose dissolution and regeneration media

RSC Advances ◽  
2017 ◽  
Vol 7 (28) ◽  
pp. 17451-17461 ◽  
Author(s):  
Ashley J. Holding ◽  
Arno Parviainen ◽  
Ilkka Kilpeläinen ◽  
Ana Soto ◽  
Alistair W. T. King ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Cellulose Dissolution ◽  
Solvent Systems ◽  
Phosphonium Ionic Liquids ◽  
Long Chain

Hydrophobic, long-chain tetraalkylphosphonium acetate salts (ionic liquids) were combined with DMSO and the feasibility of these solvent systems for cellulose dissolution and regeneration was studied.

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