Hybrid sol–gel coating agents based on zirconium(IV) propoxide and epoxysilane

Milošev, Ingrid; Kapun, Barbara; Rodič, Peter; Iskra, Jernej

doi:10.1007/s10971-015-3620-9

Cited by 42 publications

(19 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is the result of condensation reaction of hydrolysed silane and hydroxyl groups of raw fibre cellulose [ 48 ]. The most intense bands observed in the spectrum are 1192, 1078, 910, 817, and 780 cm −1 due to the stretching of C—O, Si—O, and Si—C bonds [ 49 ]. The intensity of the hemicellulose peak at 1373 cm −1 is decreased because of masking, since silane treatment creates silane band at 1355 cm −1 [ 50 ].…”

Section: Resultsmentioning

confidence: 99%

Characterization on chemical and mechanical properties of silane treated fish tail palm fibres

Sabarinathan

Rajkumar

Annamalai

et al. 2020

International Journal of Biological Macromolecules

View full text Add to dashboard Cite

A novel cellulosic fibre was extracted from the peduncle portion of the fish tail palm tree and the extracted fish tail palm fibre was treated with different concentrations (1%, 5%, and 9%) of silane solution. The characteristic analysis on chemical, functional, mechanical and surface property of the extracted fish tail palm fibres were investigated through chemical composition analysis, Fourier Transform InfraRed spectroscopy (FT-IR), single fibre tensile test, and Scanning Electron Microscopy (SEM). Chemical analysis results indicate that silane treatment improved the cellulose content of the fish tail palm fibre. The highest cellulose content of 72.51% was observed in the 9% silane treated fish tail palm fibre. Also, it improved crystallinity index value of 62.5% for 5% silane treated fibre, which is confirmed through the X-ray diffraction analysis. FT-IR result indicates the removal of hemicellulose at characteristic wavelength of 1745 cm −1 for 5% silane treated fish tail palm fibre. Tensile property of the silane treated fish tail palm fibre (1, 5, and 9%) shows an increased tensile strength of 7.3%, 12%, and 6.6% as compared to raw fish tail palm fibre. Moreover, this type of novel natural fibres can reduce the cost while offering competent performance during the polymer-based product development.

show abstract

Section: Resultsmentioning

confidence: 99%

Characterization on chemical and mechanical properties of silane treated fish tail palm fibres

Sabarinathan

Rajkumar

Annamalai

et al. 2020

International Journal of Biological Macromolecules

View full text Add to dashboard Cite

show abstract

“…Several types of sol-gel coatings were developed as functional coatings for biomedical alloys. 89,90,91 Titanium dioxide (TiO 2 ) has received considerable attention in the field of materials science and has been extensively studied and prepared also by sol-gel methodologies. In majority of routes the obtained coatings were annealed up to 500 °C to obtain desired phase composition.…”

Section: Sol-gel Coatings With Active Functionmentioning

confidence: 99%

“…92 Epoxy-based precursor GPTMS was used in combination with zirconium-based inorganic precursor ZTP and acetic acid as catalyst (coating denoted as ZG). 89 The final sol contains Zr−O−Zr, Si− O−Si and Zr−O−Si bonds and incorporates acetate in its structure in a bidentate chelate coordination After deposition of the sol in the form of a coating on titanium substrate and curing at 150 °C the opening of the epoxy ring at GPTMS leads to complete polymerization of the organic network and formation of a dense and homogeneous coating suitable for biomedical application. 89 After addition of TiO 2 nanoparticles to sol and their incorporation in the coating, the antibacterial activity was gained.…”

Section: Sol-gel Coatings With Active Functionmentioning

confidence: 99%

Contemporary Modes of Corrosion Protection and Functionalization of Materials

Milošev

2019

ACSi

Self Cite

View full text Add to dashboard Cite

Corrosion protection is an important global issue. Corrosion affects all metal materials in industry, infrastructure, civil engineering, transport, biomedicine, etc. causing their deterioration and degradation. Corrosion protection is a necessity which enables the safe and well-functioning of metal structures and devices. In addition to long-term efficiency, corrosion protection should be environmentally and economically acceptable. Growing population with needs on modern and high-tech technologies is boosting consumption of base and rare earth metals. All these issues are putting high demands on area of corrosion protection with the main goal to prolong the lifetime of metal materials, reduce the need for steeply increasing production and thus preserve resources. In this review contemporary modes of corrosion protection of metal materials with the emphasis on copper and aluminium base alloys as one of most important base metals are presented. These include corrosion inhibitors, conversion, sol-gel and hydrophobic coatings. Examples are our research studies over the last decade are presented.

show abstract

“…Once hydrolyzed, the GPTMS precursor can form an inorganic molecular network via condensation reaction and an organic network via epoxide opening polymerization reaction. TPOZ precursor works as an effective catalyst to the epoxide opening reaction and also acts as an inorganic network former to increase the inorganic network connectivity of the hybrid coating. After curing of the bottom spray layer, a hard top layer was deposited with atmospheric plasma deposition using tetraethyl orthosilicate (TEOS) as the precursor.…”

Section: Introductionmentioning

confidence: 99%

Optically Transparent Protective Coating for Plastics Using Dual Spray and Atmospheric Plasma Deposition

Ding

Dong

Han

et al. 2018

Adv Materials Inter

View full text Add to dashboard Cite

deposited coatings are also low because of the low molecular network connectivity.To achieve coatings with better mechanical properties, we recently demonstrated an atmospheric plasma enhanced deposition technique for depositing transparent organosilicate coatings on plastic substrates with tunable mechanical properties. [9][10][11][12] The optimized bilayer coatings exhibited a twofold increase in adhesion energy with poly(methyl methacrylate) (PMMA) and a three-to fivefold improvement in surface hardness compared to the commercial sol-gel polysiloxane coatings. However, the debond interface still remained adhesively at the polymer and coating interface. Coatings with better adhesive properties which can drive cracks to propagate cohesively within the polymer substrate are highly desirable as it can provide better reliability and durability.In this study, we show the successful deposition of a bilayer protective coating on plastics using a combined spray and atmospheric plasma deposition method. A thin highly adhesive inorganic-organic hybrid coating on plastics was deposited using (3-glycidyloxypropyl) trimethoxysilane (GPTMS) and tetrapropyl zirconate (TPOZ) as precursors with spray coating deposition in air. Among different solution-based processing methods, spray deposition is highly desirable for making large-area, uniform coatings on various kinds of substrates through a simple and cost-effective process. [13] It is also able to coat complex 3D microstructures such as cantilevers and nonplanar surfaces for microelectromechanical systems applications. [14,15] It relies less on solution characteristics than substrate-contact based techniques and provides more flexibility on solvent choice, making it a more versatile process with less environment pollution. [16] Once hydrolyzed, the GPTMS precursor can form an inorganic molecular network via condensation reaction and an organic network via epoxide opening polymerization reaction. TPOZ precursor works as an effective catalyst to the epoxide opening reaction [17][18][19] and also acts as an inorganic network former to increase the inorganic network connectivity of the hybrid coating. After curing of the bottom spray layer, a hard top layer was deposited with atmospheric plasma deposition using tetraethyl orthosilicate (TEOS) as the precursor.The successful processing of bilayer protective coatings on plastics using a combined spray and atmospheric plasma deposition method is shown. The base layer is a spray deposited coating with high adhesion using (3-glycidyloxypropyl) trimethoxysilane and tetrapropyl zirconate (TPOZ) precursors. The top dense layer is deposited by atmospheric plasma deposition with a tetraethyl orthosilicate precursor. The coating deposition rate, chemical composition, elastic modulus, hardness, and adhesion to poly(methyl methacrylate) (PMMA) substrates are investigated. The adhesion to the polymer substrate is found to decrease with increasing TPOZ content in the precursor solution, while the elastic modulus and hardness of the base layer ...

show abstract

Hybrid sol–gel coating agents based on zirconium(IV) propoxide and epoxysilane

Cited by 42 publications

References 26 publications

Characterization on chemical and mechanical properties of silane treated fish tail palm fibres

Characterization on chemical and mechanical properties of silane treated fish tail palm fibres

Contemporary Modes of Corrosion Protection and Functionalization of Materials

Optically Transparent Protective Coating for Plastics Using Dual Spray and Atmospheric Plasma Deposition

Contact Info

Product

Resources

About