The role of the rubber-filler interphase in linear viscoelasticity of SBRs filled with carbon-black nano-size particles

2013 ◽  
pp. 299-304 ◽  
Keyword(s):  
Carbon Black ◽  
Linear Viscoelasticity ◽  
Nano Size ◽  
Rubber Filler

Buckling of Viscoelastic Columns. Part II: Constant Deformation Rate Buckling

1985 ◽  
Vol 58 (1) ◽  
pp. 164-175 ◽  
Author(s):  
Shau-Chew Wang ◽  
Eberhard A. Meinecke
Keyword(s):  
Experimental Data ◽  
Secondary Structure ◽  
Carbon Black ◽  
Deformation Rate ◽  
Linear Viscoelasticity ◽  
Theoretical Development ◽  
Gravitational Effects ◽  
Loading And Unloading ◽  
Constant Deformation ◽  
Lower Carbon

Abstract The buckling of viscoelastic columns has been considered from both a theoretical and an experimental perspective. The fact that buckling occurs at relatively low strain where the SBR is nearly linearly viscoelastic allowed several simplifications in the theoretical development, leading to closed form predictions of the loading and unloading curves. This treatment neglects gravitational effects and carbon secondary structure effects and fits the experimental data best at HAF loadings around 30 phr. At lower carbon black loadings, the gravitational effects caused the experimental Euler load to be less than predicted from linear viscoelasticity theory, while at higher carbon black loadings, the carbon black structure led to higher Euler loads than predicted.

The role of electrostatic repulsion in the gelation of poly(vinyl alcohol)/borax aqueous solutions

Soft Matter ◽  
2018 ◽  
Vol 14 (32) ◽  
pp. 6767-6773 ◽  
Author(s):  
Jingjing Li ◽  
Zhijie Zhang ◽  
Xiao Cao ◽  
Yonggang Liu ◽  
Quan Chen
Keyword(s):  
Aqueous Solutions ◽  
Vinyl Alcohol ◽  
Linear Viscoelasticity ◽  
Poly Vinyl Alcohol ◽  
Electrostatic Repulsion

This study examined linear viscoelasticity of semidilute non-entangled poly(vinyl alcohol) (PVA) and borax aqueous solutions: one borax molecule dissociates into two B(OH)3 molecules and two B(OH)4− ions, and the latter can crosslink the PVA chains.

Polyaniline/Carbon black nanocomposites: The role of synthesis conditions on the morphology and properties

2018 ◽  
Vol 16 ◽  
pp. 14-21 ◽  
Author(s):  
Luis M.G. da Silva ◽  
Hugo G. Lemos ◽  
Sydney F. Santos ◽  
Renato A. Antunes ◽  
Everaldo C. Venancio
Keyword(s):  
Carbon Black ◽  
Synthesis Conditions

THE ROLE OF CARBON BLACK IN THE THERMAL OXIDATION OF POLYOLEFINS

Carbon ◽  
1960 ◽  
pp. 63-69 ◽  
Author(s):  
W.L. HAWKINS ◽  
M.A. WORTHINGTON ◽  
F.H. WINSLOW
Keyword(s):  
Carbon Black ◽  
Thermal Oxidation

The Effect of New Antiagglomerators of the Quantislip Series for Solution-Polymerised Rubber on the Properties of cis-1,4-polyisoprene

2016 ◽  
Vol 43 (12) ◽  
pp. 1-8
Author(s):  
I.Sh. Nasyrov ◽  
V.Yu. Faizova ◽  
D.A. Zhavoronkov ◽  
S.M. Kavun ◽  
A.S. Kolokol'nikov ◽  
...  
Keyword(s):  
Carbon Black ◽  
Stearic Acid ◽  
Pilot Plant ◽  
Strength Properties ◽  
Calcium Stearate ◽  
Rubber Crumb ◽  
Chlorine Ions ◽  
Active Centres ◽  
Isoprene Rubber ◽  
Rubber Filler

The results of pilot-plant tests of SKI-3 isoprene rubber containing a series of Quantislip™ rubber crumb antiagglomerators (AAs) are presented. Tests were conducted at OAO ‘Sintez Kauchuk’, with the AAs introduced at the degassing stage. The new Quantislip AAs, developed by OOO ‘NPP Kvalitet’, ensure a reduction in calcium and chlorine ions in wastewater and in its alkalinity. An improvement in the elastic strength properties of carbon-black-filled vulcanisates based on cis-1,4-polyisoprene (SKI-3) and containing AAs was shown. For the production of SKI-3 rubber, an optimum AA composition – Quantislip of grade BM-2R – was developed. When BM-2R is used, stearic acid, formed in standard rubber with a calcium stearate suspension as AA, is eliminated. The possible mechanism of improvement in the strength properties of carbon-black-filled vulcanisates based on SKI-3 is discussed. This is possibly due to an improvement in rubber–filler interaction as a result of there no longer being any competition between segments of macromolecules and stearic acid for active centres when carbon black is adsorbed on the surface.

Experimental investigation on the role of PVA in eliminating inhibition phenomenon of carbon black during the synthesis of polystyrene/carbon black composite particles

2012 ◽  
Vol 52 (6) ◽  
pp. 1309-1316 ◽  
Author(s):  
Juntao Yan ◽  
Chunlei Wang ◽  
Yan Gao ◽  
Zaihang Zheng ◽  
Zhiqiang Cheng ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Carbon Black ◽  
Composite Particles

scholarly journals Carbon black suppresses the osteogenesis of mesenchymal stem cells: the role of mitochondria

2018 ◽  
Vol 15 (1) ◽  
Author(s):  
Yulai Shen ◽  
Lu Wu ◽  
Dongdong Qin ◽  
Yankai Xia ◽  
Zhu Zhou ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Carbon Black

Bound—Rubber Formation in Diene Polymer Stocks

1958 ◽  
Vol 31 (2) ◽  
pp. 369-373 ◽  
Author(s):  
P. B. Stickney ◽  
E. E. McSweeney ◽  
W. J. Mueller ◽  
S. T. Palinchak
Keyword(s):  
Particle Size ◽  
Carbon Black ◽  
Recent Work ◽  
Experimental Approach ◽  
Polymer Gel ◽  
Fine Powders ◽  
Bound Rubber ◽  
Close Relationship ◽  
Static Extraction ◽  
Rubber Filler

Abstract The phenomenon of insolubilization of rubber by carbon black has been known for at least twenty-seven years. There have been many attempts during this time to establish a relationship between insolubilization, or bound rubber formation, and reinforcement of rubber by carbon black. It was postulated, as far back as 1925, that there was a parallelism between particle size and insolubilization. This in spite of the fact that the methods available for determining particle size of very fine powders at that time were relatively crude. It was postulated at that time that there was a close relationship between the phenomena of vulcanization and reinforcement. This concept has had recurrent periods of popularity since that time. The insolubilization of rubber by carbon black, or other pigments, has been estimated by various techniques by the early investigators in the field. In more recent work, the trend has been toward a very straightforward experimental approach. Bound rubber in an uncured rubber-filler compound is usually determined by static extraction using the same apparatus and techniques used in determining the gel content of unfilled polymers. It follows that, using this method, polymer insoluble because of crosslinking, or gel, cannot be distinguished from polymer insolubilized by incorporation of fine fillers. In investigating the formation of bound rubber, therefore, the presence of gel in the polymer being used, or formation of polymer gel during processing must be taken into account.

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