Role of ZDC/S ratio for pervaporative separation of organic liquids through modified EPDM membranes: rational mechanistic study of vulcanization

RSC Advances ◽  
2016 ◽  
Vol 6 (73) ◽  
pp. 69387-69403 ◽  
Author(s):  
Manas Mahapatra ◽  
Mrinmoy Karmakar ◽  
Biplab Mondal ◽  
Nayan Ranjan Singha
Keyword(s):  
Separation Factor ◽  
Mechanistic Study ◽  
Organic Liquids ◽  
Membrane Selectivity ◽  
Crosslink Densities

Variations in crosslink densities and crystallinity due to mono-, di- and poly-sulphide linkages in EPDM vulcanization are achieved using different sulfur/accelerator weight ratios and therefore the separation factor and membrane selectivity of toluene.

Mechanistic Study of the Role of One-Component Resins in Rubber-to-Brass Bonding in Tires

2004 ◽  
Vol 77 (5) ◽  
pp. 891-913 ◽  
Author(s):  
Pankaj Y. Patil ◽  
William J. van Ooij
Keyword(s):  
Reaction Time ◽  
Secondary Ion Mass Spectrometry ◽  
Gel Permeation Chromatography ◽  
Mechanistic Study ◽  
Coated Steel ◽  
Adhesion Promoters ◽  
Steel Cords ◽  
Adhesion Performance ◽  
Secondary Ion

Abstract Adhesion between rubber and brass-coated steel cords is enhanced by using resins as adhesion promoters. Experiments were carried out using a squalene liquid rubber modeling approach to study the effect of resins on the chemistry of the vulcanization reaction. The formation of new intermediates during vulcanization and changes in chemical concentrations with reaction time was studied using Gel Permeation Chromatography (GPC) analysis of the reacted squalene mixtures. Also, the effect of presence of resins on the surface of sulfidized brass cords was studied by analyzing the adhesion layer's elemental composition using the Electron Dispersive X-ray Spectroscopy (EDX) and Secondary Ion Mass Spectrometry (SIMS) characterization techniques. The changes in surface morphology of the adhesion layer with reaction time was noted by taking micrographs using the Scanning Electron Microscopy (SEM) technique. In this paper, a new mechanism is proposed for the role of resins in the improvement of initial and aged adhesion performance between rubber and brass-coated steel tire cords.

scholarly journals Effect of solvent on silicon nanoparticle formation and size: a mechanistic study

Nanoscale ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 4696-4700 ◽  
Author(s):  
Sanaa Semlali ◽  
Benoit Cormary ◽  
Maria L. De Marco ◽  
Jérôme Majimel ◽  
Alix Saquet ◽  
...  
Keyword(s):  
Nanoparticle Size ◽  
Mechanistic Study ◽  
Silicon Nanoparticle ◽  
Nanoparticle Formation ◽  
Effect Of Solvent ◽  
Role Of Solvent

Silicon nanoparticle size is adjusted by simply changing the reaction solvent. The role of solvent on nanoparticle formation is investigated.

scholarly journals The Hypotensive Role of Acupuncture in Hypertension: Clinical Study and Mechanistic Study

2020 ◽  
Vol 12 ◽  
Author(s):  
Hao Fan ◽  
Jing-Wen Yang ◽  
Li-Qiong Wang ◽  
Jin Huang ◽  
Lu-Lu Lin ◽  
...  
Keyword(s):  
Clinical Study ◽  
Mechanistic Study
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