Ceria/Acrylic Polymer Microgel Composite: Synthesis, Characterization, and Anticorrosion Application for API 5L X70 Substrate in Chloride-Enriched Medium

Abstract

Ceria/poly(acrylic acid) microgel composite with anticorrosion potential has been synthesized via an in situ polymerization method. This polymer composite matrix has demonstrated significant reduction in API 5L X70 steel corrosion in 0.5 M HCl. In-depth studies of the anticorrosion properties of this microgel have been conducted by corrosion electrochemistry, and its adsorption on steel altered both anodic dissolution and cathodic hydrogen evolution in the acid medium. Increment of CeO 2 content within the PAA/CeO 2 hybrid composite improved its surface protective performance; 1 and 5 g of CeO 2 within the composite recorded 82 and 90% inhibition efficiency, respectively, compared to PAA alone (62%), at equal concentration. PAA formed a protective polymeric film on steel upon molecular adsorption, but in the presence of the PAA/CeO 2 , the metal surface protection was enhanced by the adhesion of compact hybrid films. PAA/CeO 2 microgel composite may have a future as an anticorrosive paint component for metal surface treatments.

Interface Interactions in Conjugated Polymer Composite with Metal Oxide Nanoparticles

“…For instance, Bellucci et al demonstrated that the optical properties changes were correlated to nanoparticle-driven interface modulations [1]. The potential uses of composites include battery cathodes and solid-state ionics [2,3], supercapacitor and dielectrics [4,5], catalysts [6,7], corrosion protection [8,9], sensors [10], optical and electrical materials [11,12], ultraviolet (UV) blocking [13,14,15] and many others. In these recent years, composites with the use of organic–inorganic hybrids were found to possess improved and new properties.…”

Waterborne Acrylic/CeO2 Nanocomposites for UV Blocking Clear Coats

“…Recently, many authors' investigation has been directed to improve anticorrosion properties with the incorporation of CeO 2 nanoparticles. For instance, polyurethane coatings containing CNT/CeO 2 [10], polyacrylic acid/CeO 2 coatings [11], CeO 2 / graphene-epoxy nanocomposite coatings [12] and water based polyurethane/ CeO 2 coatings [13]. None of these works obtained encapsulated morphology and hence, the possible aggregation of the nanoparticles during film formation and leaching could be a problem, even though the anticorrosion properties were improved in all the cases.…”

“…In this direction, in the last decade, many authors have studied the benefits in properties that could be obtained when combining CeO 2 nanoparticles with polymers. For instance, catalytic [1][2][3], thermal [4], mechanical [5,6], optical [7][8][9], anticorrosion [10][11][12], and barrier properties [13] of polymers have been considerably improved with the incorporation of CeO 2 nanoparticles. Moreover, CeO 2 nanocomposites can find application in many different fields such as chemisensors and photocatalyst for environmental applications [14][15][16], temperature and humidity sensors [17] or extractants for yttrium ions [18].…”

Anticorrosion allyl sulfonate graft chitosan/graphene oxide nanocomposite material

“…Most grades of steel are utilized in constructing auto parts in automotive industries as well as fabricating transportation lines and storage structures for oil-gas fluids in petroleum industries. 1 The applications of steel materials are enormous in both domestic and industrial spheres, however, their usage is significantly affected by corrosion. Protecting steel materials against corrosion has become vital in safeguarding the safety of steel structures and maintenance of cost involved in overall repairs.…”