Rice husk ash filled natural rubber. III. Role of metal oxides in kinetics of sulfur vulcanization

2003 ◽  
Vol 90 (6) ◽  
pp. 1519-1531 ◽  
Author(s):  
H. M. da Costa ◽  
L. L. Y. Visconte ◽  
R. C. R. Nunes ◽  
C. R. G. Furtado
Keyword(s):  
Natural Rubber ◽  
Metal Oxides ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Sulfur Vulcanization ◽  
Kinetics Of

ZINC OXIDE VERSUS MAGNESIUM OXIDE REVISITED. PART 1

2012 ◽  
Vol 85 (1) ◽  
pp. 38-55 ◽  
Author(s):  
Manuel Guzmán ◽  
Berta Vega ◽  
Núria Agulló ◽  
Ulrich Giese ◽  
Salvador Borrós
Keyword(s):  
Zinc Oxide ◽  
Environmental Impact ◽  
Natural Rubber ◽  
Metal Oxides ◽  
Environmental Effects ◽  
Model Compound ◽  
Rubber Industry ◽  
Sulfur Vulcanization ◽  
Activator System

Abstract Zinc oxide is a widely used compound in the rubber industry due to the excellent properties that it shows as activator, and consequently, its role in the mechanism of accelerated sulfur vulcanization has been extensively studied. Due to the increased concern about its environmental effects, several research studies have been carried out in order to substitute it with different metal oxides such us MgO. The effect of the activator system in order to minimize the environmental impact of the rubber goods has been explored. The work developed is presented in two parts. In Part 1, the influence of different mixtures of ZnO and MgO on the vulcanization of natural rubber has been investigated. In Part 2, model compound vulcanization has been used to study the role of MgO on the mechanism to gain a better understanding of the differences shown in Part 1.

ZINC OXIDE VERSUS MAGNESIUM OXIDE REVISITED. PART 2

2012 ◽  
Vol 85 (1) ◽  
pp. 56-67 ◽  
Author(s):  
Manuel Guzmán ◽  
Berta Vega ◽  
Núria Agulló ◽  
Salvador Borrós
Keyword(s):  
Zinc Oxide ◽  
Environmental Impact ◽  
Natural Rubber ◽  
Metal Oxides ◽  
Environmental Effects ◽  
Model Compound ◽  
Rubber Industry ◽  
Sulfur Vulcanization ◽  
Activator System

Abstract Zinc oxide is a widely used compound in the rubber industry due to the excellent properties that it shows as an activator and, consequently, its role in the mechanism of accelerated sulfur vulcanization has been extensively studied. Due to the increased concern about its environmental effects, several research studies have been carried out in order to substitute it with different metal oxides such us MgO. The effect of the activator system in order to minimize the environmental impact of the rubber goods has been explored. The work developed is presented in two parts. In Part 1, the influence of different mixtures of ZnO and MgO in the vulcanization of natural rubber has been investigated. In Part 2 of the study, model compound vulcanization has been used to study the role of MgO on the mechanism to gain a better understanding of the differences shown in the first part.

scholarly journals Role of EDAPTMS-Functionalized Silica Derived from Rice Husk Ash in the Adsorption Kinetics of Cu(II), Cr(III), and Pb(II)

2018 ◽  
Vol 13 (2) ◽  
pp. 331
Author(s):  
Is Fatimah ◽  
Tesha Yuliarni ◽  
Dian Riyanti
Keyword(s):  
Metal Ions ◽  
Surface Area ◽  
Rice Husk ◽  
Adsorption Kinetics ◽  
Rice Husk Ash ◽  
Batch Adsorption ◽  
Mixed Solution ◽  
Functionalized Silica ◽  
Kinetics Of

In the present work, synthesis of (3-ethylene diamino propyl)-trimethoxysilane (EDAPTMS)-functionalized silica prepared from rice husk ash (RHA) and its adsorptivity of Cu(II), Cr(III), and      Pb(II) in an aqueous solution was investigated. The EDAPTMS-functionalized silica was prepared by destruction of RHA with 4 M NaOH solution followed by functionalization by using the sol-gel method. The interaction was engaged by mixing EDAPTMS with silica gel in an acid condition followed by aging.  The gel obtained from the procedure was analyzed by using X-ray diffraction (XRD), infrared spectroscopy (FTIR), and a surface area analyzer (SAA). Effect of EDAPTMS content on the material character and adsorption capability are the focuses of the study. The adsorption study was conducted in a batch adsorption system for Cu(II), Cr(III), and Pb(II) mixed solution and metal ion analyses were performed by atomic absorption spectrophotometry. The results showed that enhancement of physicochemical character was obtained after modification Based on the quantitative analysis of each metal, the kinetics of adsorption of a single solution of each ion and mixed solutions were studied. as shown by the increasing specific surface area as well as the increasing adsorption rate of the metal ions along increasing EDAPTMS content. Langmuir and Freundlich models were utilized for the kinetic study. Adsorption selectivity and adsorption kinetics were found to be strongly influenced by ionic coordination bonding with metal ions. The interpretation of the kinetic models showed the fitness of the Freundlich model for all metal ions. Copyright © 2018 BCREC Group. All rights reservedReceived: 8th October 2017; Revised: 27th January 2018; Accepted: 29th January 2018; Available online: 11st June 2018; Published regularly: 1st August 2018How to Cite: Fatimah, I., Yuliani, T., Rianti, D. (2018). Role of EDAPTMS-Functionalized Silica Derived from Rice Husk Ash in the Adsorption Kinetics of Cu(II), Cr(III), and Pb(II). Bulletin of Chemical Reaction Engineering & Catalysis, 13 (2): 331-340 (doi:10.9767/bcrec.13.2.1587.331-340) 

Role of ceria in CO2 adsorption on NaZSM-5 synthesized using rice husk ash

2012 ◽  
Vol 18 (1) ◽  
pp. 260-265 ◽  
Author(s):  
Pushparaj Hemalatha ◽  
Margandan Bhagiyalakshmi ◽  
Mani Ganesh ◽  
Muthaihpillai Palanichamy ◽  
Velayutham Murugesan ◽  
...  
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Co2 Adsorption

The Effect of Rice Husk Ash as a Filler for Epoxidized Natural Rubber Compounds

1997 ◽  
Vol 36 (1-2) ◽  
pp. 39-51 ◽  
Author(s):  
Hanafi Ismail ◽  
U. S. Ishiaku ◽  
A. R. Arinab ◽  
Z. A. Mohd Ishak
Keyword(s):  
Natural Rubber ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Epoxidized Natural Rubber ◽  
Rubber Compounds

Composite Materials from Unsaturated Polyester/Rice Husk Ash/ Natural Rubber-g-Polystyrene

2007 ◽  
Vol 15 (4) ◽  
pp. 291-295
Author(s):  
Saowaroj Chuayjuljit ◽  
Pecharee Sriratampai ◽  
Pranut Potiyaraj
Keyword(s):  
Composite Materials ◽  
Natural Rubber ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Unsaturated Polyester

Role of geopolymer as a cure activator in sulfur vulcanization of epoxidized natural rubber

2019 ◽  
Vol 137 (17) ◽  
pp. 48624
Author(s):  
Hassarutai Yangthong ◽  
Skulrat Pichaiyut ◽  
Suwaluk Wisunthorn ◽  
Claudia Kummerlöwe ◽  
Norbert Vennemann ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Epoxidized Natural Rubber ◽  
Sulfur Vulcanization ◽  
Cure Activator
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