Modified cassava starches as potential corrosion inhibitors for sustainable development

Ochoa, Nathalie; Bello, Marisela; Sancristóbal, Janet; Balsamo, Vittoria; Albornoz, Alberto; Brito, Joaquı́n L.

doi:10.1590/s1516-14392013005000126

Cited by 28 publications

(23 citation statements)

References 46 publications

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“…The peaks at roughly 286 and 532 eV are assigned to carbon and oxygen, respectively. Different binding energies of these C 1s and O 1s peaks are summarized in Table . For CS and MS, the C 1s signal showed four peaks at ∼284.8, 286.4, 287.2, and 288.9 eV corresponding to CC and/or CH, CO, OCO and/or CO and OCO, respectively.…”

Section: Resultsmentioning

confidence: 99%

Enhancing compatibility between poly(lactic acid) and thermoplastic starch using admicellar polymerization

Hemvichian¹,

Suwanmala²,

Kangsumrith

et al. 2016

J of Applied Polymer Sci

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An alternative method to improve the compatibility between poly(lactic acid) (PLA) and cassava starch (CS) is proposed and investigated. Admicellar polymerization is used to modify the surface of CS with poly(methyl methacrylate) (PMMA) in order to make it more hydrophobic and hence more compatible with PLA. The increased hydrophobicity of PMMA modified cassava starch (MS) is validated by contact angle measurement. Results from iodine test, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), X‐ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) confirm the formation of PMMA film on MS surface. Mechanical properties of PLA‐CS and PLA‐MS blends are investigated to compare their compatibility. Noticeable improvements in blend tensile strength and elongation at break evidently show that MS is more hydrophobic as well as more compatible with PLA than CS. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43755.

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Section: Resultsmentioning

confidence: 99%

Enhancing compatibility between poly(lactic acid) and thermoplastic starch using admicellar polymerization

Hemvichian¹,

Suwanmala²,

Kangsumrith

et al. 2016

J of Applied Polymer Sci

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“…33 The O1s core level spectrum in Figure 3c shows the presence of C-OH, O-H and C-O bonds at 533.36, 532.16 and 531.24 eV, respectively. 35 The N1s XPS spectrum presented in Figure 3d shows a C-N peak only in GO-BDMA-Pd at 399.47 eV contributed to the higher C1s intensity (68.15%) of the GO-BDMA-Pd on GO-BDMA (64.41%). 36 Figure 3e observed in the presence of 0.03 M HCHO.…”

Section: Resultsmentioning

confidence: 95%

Synergistic Effect of 1,4-Benzenedimethaneamine Assembled Graphene Supported Palladium for Formaldehyde Oxidation Reaction in Alkaline Media

Ejaz

Ahmed

2016

J. Electrochem. Soc.

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An electrochemical sensor based on 1,4-benzenedimethaneamine functionalized graphene supported palladium (GO-BDMA-Pd) nanoparticles (NPs) has been synthesized and employed as an efficient electrocatalyst for formaldehyde (HCHO) oxidation reaction (FOR). The physical characterization of the sensor has studied via transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). TEM study has revealed good dispersion of PdNPs onto the GO-BDMA surface. The electrochemical properties of the sensor for FOR have been studied by different electrochemical techniques including cyclic voltammetry, differential pulse voltammetry and chronoamperometry in 1 M KOH. The proposed sensor has shown high sensitivity, good stability and fast response to HCHO. The oxidation peak current has followed a linear relationship with the HCHO concentration in the range of 1 × 10 −6 -1.8 × 10 −2 M with limit of detection 3. In last few years, small organic molecules like acetic acid, methanol, ethanol and formaldehyde (HCHO) have gathered huge attention due to their potential applications in low temperature fuel cells.

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“…This phenomenon signified that the corrosion inhibitor does not stop the corrosion activity but significantly retards the chemical reaction on the exposed surfaces. The inhibition reaction that occurred was due to a restriction mechanism towards active site of chemical reaction on the coupon's surface [24]. A maximum inhibition efficiency was achieved at 86.26 IE% with the addition of 1500 ppm GTS.…”

Section: Potentiodynamic Polarization Analysismentioning

confidence: 99%

“…Moreover, at the fingerprint region of bands between 900 and 1500 cm −1 , bands at 997, 1077, 1149 and 1340 cm −1 were identified as -C-O-C-bonds in the anhydroglucose unit. The anhydroglucose unit is the most important chemical building block of polysaccharides of starch without containing water [24].…”

Section: Ftir Analysismentioning

confidence: 99%

Dimethyl Sulfoxide-Treated Starch of Dioescorea hispida as a Green Corrosion Inhibitor for Low Carbon Steel in Sodium Chloride Medium

Othman¹,

Salleh²,

Dasuki³

et al. 2018

Corrosion Inhibitors, Principles and Recent Applications

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This research was focused on discovering the utilization of Dioscorea hispida (gadong tuber) starch as a potential green corrosion inhibitor for SAE 1045 carbon steel in 0.6 M NaCl media. Raw starch from gadong tubers was obtained through the extraction and precipitation process prior to drying in producing fresh starch powder. The insoluble starch powder was then dissolved in 90% dimethyl sulfoxide (DMSO) solvent and was ready for corrosion inhibitor testing. The extraction of starch powder was analyzed using Fourier Transform Infrared Spectroscopy (FTIR) to identify the presence of functional groups that may contribute to the inhibition of the carbon steel sample. The inhibitive performance of gadong tuber starch (GTS) as a green corrosion inhibitor was studied by weight loss measurement and potentiodynamic polarization in a corrosive medium using 0.6 M sodium chloride (NaCl) solution. Effect of GTS concentration on corrosion behavior was investigated. Based on the findings, 1500 ppm of GTS demonstrated the highest corrosion inhibition performance as the corrosion rate of carbon steel immersed in plain 0.6 M NaCl was reduced from 0.131 to 0.018 mm/year, which is up to 86.3 IE% of inhibition efficiency in the presence of the green corrosion inhibitor. According to potentiodynamic polarization analysis, corrosion current density (I corr ) was also decreased from 1.13 × 10 −5 to 1.55 × 10 −6 mA/cm −2 .

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Modified cassava starches as potential corrosion inhibitors for sustainable development

Cited by 28 publications

References 46 publications

Enhancing compatibility between poly(lactic acid) and thermoplastic starch using admicellar polymerization

Enhancing compatibility between poly(lactic acid) and thermoplastic starch using admicellar polymerization

Synergistic Effect of 1,4-Benzenedimethaneamine Assembled Graphene Supported Palladium for Formaldehyde Oxidation Reaction in Alkaline Media

Dimethyl Sulfoxide-Treated Starch of Dioescorea hispida as a Green Corrosion Inhibitor for Low Carbon Steel in Sodium Chloride Medium

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