CORROSION-INHIBITING BEHAVIOR OF EPOXIDIZED NATURAL RUBBER–POLYANILINE DODECYLBENZENESULFONATE (ENR-PANI.DBSA) BLENDS

2014 ◽  
Vol 87 (3) ◽  
pp. 526-537 ◽  
Author(s):  
K. C. Yong
Keyword(s):  
Carbon Steel ◽  
Natural Rubber ◽  
Electrochemical Corrosion ◽  
Epoxidized Natural Rubber ◽  
Electrically Conductive ◽  
Corrosion Tests ◽  
Total Immersion ◽  
Very High ◽  
Brine Environment

ABSTRACT Electrically conductive (up to 10−1 S cm−1) ENR-PAni.DBSA blends were produced, and their corrosion-inhibiting behaviors for carbon steel were successfully investigated. As observed from both total immersion and electrochemical corrosion tests, ENR-PAni.DBSA blends consisted of very low and very high PAni.DBSA contents (i.e., ≤5.0 wt% and ≥40.0 wt%) and showed poor corrosion-inhibiting behavior for carbon steel, either in acid or artificial brine environment. Meanwhile, blends with 10.0 to 30.0 wt% of PAni.DBSA content exhibited the best corrosion-inhibiting behavior for carbon steel.

Enhancing the Corrosion Inhibition Behaviour of Epoxidized Natural Rubber-Polyaniline Dodecylbenzenesulfonate Blend via the Incorporation of WO3

2017 ◽  
Vol 25 (2) ◽  
pp. 135-142 ◽  
Author(s):  
K.C. Yong
Keyword(s):  
Carbon Steel ◽  
Natural Rubber ◽  
Corrosion Inhibition ◽  
Corrosion Inhibitors ◽  
Electrochemical Corrosion ◽  
Epoxidized Natural Rubber ◽  
Host Matrix ◽  
Electrically Conductive ◽  
Order Of Magnitude ◽  
First Time

Electrically-conductive (in the region of 10−3 S.cm−1) epoxidized natural rubber-polyaniline dodecylbenzenesulfonate [ENR-PAni.DBSA] blend was prepared, and the effect of incorporation of WO3 on its corrosion inhibition behaviour for carbon steel was assessed for the first time. It was found that the electrical conductivity of this blend could be enhanced by up to an order of magnitude for WO3 loadings of 20.0–22.5 wt.%. From both total immersion and electrochemical corrosion tests, ENR-PAni.DBSA blends with 20.0–22.5 wt.% of WO3 were found to be the best corrosion inhibitors for carbon steel, in both acid and artificial brine environments. However, a blend containing a higher WO3 content (i.e. 25.0 wt.%) showed a significant poorer corrosion inhibition behaviour for carbon steel due to its more severe phase separation and porosity between the ENR host matrix and WO3.

scholarly journals Deposition of Zinc–Cerium Coatings from Deep Eutectic Ionic Liquids

Materials ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2035
Author(s):  
Miguel Marín-Sánchez ◽  
Elena Gracia-Escosa ◽  
Ana Conde ◽  
Carlos Palacio ◽  
Ignacio García
Keyword(s):  
Carbon Steel ◽  
Current Density ◽  
Photoelectron Spectroscopy ◽  
Steel Substrate ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Electrochemical Corrosion ◽  
Corrosion Properties ◽  
Corrosion Tests ◽  
X Ray

This work studies the electrodeposition of zinc and cerium species on carbon steel substrates from choline chloride-based ionic liquid bath in order to develop a protective coating with anti-corrosion, sacrificial, and self-repairing properties. Hull cell tests were used to study the influence of the current density on composition of the coatings and their morphology. Surface morphology, chemical composition and oxidation state of the obtained coatings were examined by scanning electron microscopy (SEM), Energy Dispersive X-ray spectroscopy (EDX), and X-ray photoelectron spectroscopy (XPS), respectively. Furthermore, electrochemical characterization and corrosion tests were performed in order to evaluate the corrosion properties of the electrodeposited Zn–Ce coatings. The cathodic deposition of Zn–Ce was achieved for the first time using the deep eutectic solvent choline chloride-urea as an electrolyte. Cerium was incorporated in the coating as oxide or mixed oxide within the Zn metal matrix. The composition and morphology of the electrodeposited coating were dependent on the applied current density. Electrochemical corrosion tests showed similar corrosion rates for all the coatings. Nevertheless on scratched tests with a ratio area of 15:1, for Zn–Ce coatings cerium oxide somehow migrates from the coating to the high pH cathodic areas developed on the surface of the bare steel substrate. Further study is still necessary to improve the corrosion protection of the Zn–Ce coating for carbon steel.

Antistatic Tire Tread Made from Epoxidized Natural Rubber Based Compound

2013 ◽  
Vol 812 ◽  
pp. 254-257
Author(s):  
Kok Chong Yong ◽  
Ahmad Kifli Che Aziz
Keyword(s):  
Natural Rubber ◽  
Physical Properties ◽  
Epoxidized Natural Rubber ◽  
Commercial Vehicles ◽  
Mechanical Mixing ◽  
Electrically Conductive ◽  
Electrical Conductivities

A vulcanized epoxidized natural rubber (ENR) based electrically conductive compound was successfully prepared by using the combination of internal mechanical mixing and open milling devices. This compound was developed based on a formula with at least 73.0 wt % of petro-chemical free ingredients. The vulcanizate of this compound showed good physical properties, high electrical conductivities and also complied with Malaysia Standard 1097 [. As a result, this newly formulated compound can be targeted for making antistatic tire tread of commercial vehicles.

Preparation coated of urea beads from banana peel bioplastic and epoxidized natural rubber 50

2020 ◽  
Author(s):  
H. K. Abdulkadir ◽  
S. A. Abdul Shukor ◽  
R. Hamzah ◽  
N. Z. Noriman ◽  
Omar S. Dahham ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Epoxidized Natural Rubber ◽  
Banana Peel

scholarly journals Biocomposites of Epoxidized Natural Rubber/Poly(lactic acid) Modified with Natural Fillers (Part I)

2021 ◽  
Vol 22 (6) ◽  
pp. 3150
Author(s):  
Anna Masek ◽  
Stefan Cichosz ◽  
Małgorzata Piotrowska
Keyword(s):  
Tensile Strength ◽  
Lactic Acid ◽  
Natural Rubber ◽  
Epoxidized Natural Rubber ◽  
Poly Lactic Acid ◽  
Uv Aging ◽  
High Elasticity ◽  
Natural Fillers ◽  
Natural Additives

The study aimed to prepare sustainable and degradable elastic blends of epoxidized natural rubber (ENR) with poly(lactic acid) (PLA) that were reinforced with flax fiber (FF) and montmorillonite (MMT), simultaneously filling the gap in the literature regarding the PLA-containing polymer blends filled with natural additives. The performed study reveals that FF incorporation into ENR/PLA blend may cause a significant improvement in tensile strength from (10 ± 1) MPa for the reference material to (19 ± 2) MPa for the fibers-filled blend. Additionally, it was found that MMT employment in the role of the filler might contribute to ENR/PLA plasticization and considerably promote the blend elongation up to 600%. This proves the successful creation of the unique and eco-friendly PLA-containing polymer blend exhibiting high elasticity. Moreover, thanks to the performed accelerated thermo-oxidative and ultraviolet (UV) aging, it was established that MMT incorporation may delay the degradation of ENR/PLA blends under the abovementioned conditions. Additionally, mold tests revealed that plant-derived fiber addition might highly enhance the ENR/PLA blend’s biodeterioration potential enabling faster and more efficient growth of microorganisms. Therefore, materials presented in this research may become competitive and eco-friendly alternatives to commonly utilized petro-based polymeric products.

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