Study of coating performance of bio-based hyperbranched polyester polyol/graphene oxide composites in PU-coating

Patil, Amardip M.; Jirimali, Harishchandra D.; Jagtap, R. N.

doi:10.1080/10601325.2020.1826330

Cited by 11 publications

(5 citation statements)

References 28 publications

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“…The amorphous nature in cured PU-MPTO was due to a hyperbranched and cross-linking polymer network. 42,43 This indicates that PU-MPTO has been chemically incorporated into the hybrid materials and formed a cross-linked network between PU and MPTO consistent with the results of FTIR analysis.…”

Section: Differential Scanning Colorimeter (Dsc)supporting

confidence: 79%

“UV-curing of novel tri-functional melamine-phosphate oligomer: An effect of coating with polyurethane acrylate toward mechanical, thermal, and flame retardant properties”

Mali¹,

Sonawane

Pawar³

et al. 2022

Polymers and Polymer Composites

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A novel melamine-phosphate tri-functional acrylate (MPTO) was successfully synthesized via cyclization reaction of hexamethylolmelamine (HMM) with phosphorous oxychloride (POCl3) followed by addition reaction of hydroxyethylmethacrylate (HEMA). The molecular structure of MPTO was identified by FTIR and 1H-NMR, 13C-NMR, and GC-MS spectra. The synthesized MPTO oligomer was impregnated with polyurethane acrylate to make various formulations and UV cured on wood and galvanized steel panels. The results of UV cured films from differential scanning calorimeter (DSC) and thermo-gravimetric analysis (TGA) exhibited increase in thermal stability and highest char yield of 18.4% at 800°C. The diffused diffraction peak appearing around 2ϴ = 16–22° corresponds to an amorphous structure which leads to irregular arrangement with formation of strong cross-linking polymer network. Furthermore, all coating films show prominent flame retardancy with UL-94 V-0 rating and maximum limiting index (LOI) values of 34.8%. The polyurethane acrylate (PU) coatings cured with MPTO that exhibited excellent mechanical properties were estimated using various tests such as adhesion, pencil hardness, solvent resistance, flexibility, and corrosion test. The coating performance revealed that MPTO can improve the mechanical, thermal, and flame retardant properties because of its unique structure identity of melamine-phosphate moiety and long aliphatic segment of an acrylate ester.

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Section: Differential Scanning Colorimeter (Dsc)supporting

confidence: 79%

“UV-curing of novel tri-functional melamine-phosphate oligomer: An effect of coating with polyurethane acrylate toward mechanical, thermal, and flame retardant properties”

Mali¹,

Sonawane

Pawar³

et al. 2022

Polymers and Polymer Composites

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“…According to Figure 2d, a peak at nearby 3600 cm −1 corresponds to O‐H groups that characterize the modification of ZSM‐5 by GO. In the spectrum of ZSM‐5‐GO (Figure 1d), the peaks at 3404, 1731, and 1053 cm −l specify the stretching vibrations of OH, CO, and COC, respectively 51–54 …”

Section: Resultsmentioning

confidence: 99%

“…In the spectrum of ZSM-5-GO (Figure 1d), the peaks at 3404, 1731, and 1053 cm Àl specify the stretching vibrations of O H, C O, and C O C, respectively. [51][52][53][54] The Raman results of PU/ ZSM-5-GO coating is illustrated in Figure 3a The FE-SEM images of GO sheets, ZSM-5, and ZSM-5-GO particles are depicted in Figure 4.…”

Section: Characterization and Electrochemical Testsmentioning

confidence: 99%

Modification of ZSM‐5 zeolite nanoparticles by graphene oxide to improve anticorrosion properties of polyurethane coating

Darabinajand

MIRMOHSENI

Niaei

2023

J of Applied Polymer Sci

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Polyurethane coatings are a good option for the protection of various structures due to their unique properties. In order to improve their barrier performance against corrosive species, various nanoparticles have been embedded into polymer coating. In this project, the ZSM‐5 zeolite nanoparticles are modified with graphene oxide. Field emission scanning electron microscopy and Fourier transform infrared spectroscopy are used for characterizing unmodified and GO‐modified ZSM‐5 zeolites. The effect of ZSM‐5 zeolite and ZSM‐5 zeolite modified with GO addition on the anticorrosion properties of polyurethane (PU) coating is evaluated by electrochemical impedance spectroscopy, Tafel polarization, and Pull‐off tests. Modification of ZSM‐5 zeolite with GO has greatly influenced the anticorrosion properties of zeolite nanoparticles in polyurethane coatings. Among various PU coatings, the PU/ZSM‐5‐GO coating on mild steel shows the best protective properties (highest Rct and lowest icorr) against active corrosive species.

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“…Biocomposites reported slightly inferior chemical resistance to an alkaline medium (NaOH) than to an HCl solution. Ester bond hydrolysis may affect biocomposite adhesion …”

Section: Resultsmentioning

confidence: 99%

Fabrication, Thermo-Mechanical, and Morphological Characterization of Hydroxyapatite-Reinforced Polyurethane Biocomposites as Dye Adsorbent for Effluent

Mumtaz,

Akram,

Zia

et al. 2023

ACS Omega

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Petrochemical costs, limited fossil fuel reserves, and concerns about greenhouse gas emissions have raised interest in developing renewable approaches for synthesizing biobased polyurethanes. This study aims to solve these problems by making nanocrystalline hydroxyapatite (HA) reinforcement from waste chicken eggshells and adding it to polyurethane synthesis through in situ polymerization. The novelty of the research lies in the utilization of HA as a reinforcement material and renewable resources for polyurethane production. The results confirm that HA was successfully added to the polyurethane backbone. Fourier transform infrared (FTIR) analysis confirmed that the NCO groups were changed to urethane linkages. TGA examination demonstrated that the samples exhibited thermal stability up to 457 °C with a mass loss of 61%, indicating enhanced thermal stability. DMA measurements showed improved mechanical properties of the synthesized polyurethanes, with storage modulus (E′), complex modulus (E*), and compliance complex (D*) values of 0.177, 22.522, and 0.660 MPa–1, respectively. SEM analysis confirmed the homogeneous surface and well-dispersed HA reinforcement. Swelling characteristics revealed an optimum absorption of 30% H2O, 35% CH3OH, and 45% CCl4. Polyurethane composites exhibited significant chemical resistance and hydrolytic stability in acidic and basic media. Additionally, the composites demonstrated efficient adsorption of methyl orange from wastewater, with the PUHCI series achieving a maximum adsorption capacity of 85.50 mg/g under optimal conditions of 0.030 g/mL dose, 45 °C temperature, 2.5 h contact time, and pH 6.0..

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Study of coating performance of bio-based hyperbranched polyester polyol/graphene oxide composites in PU-coating

Cited by 11 publications

References 28 publications

“UV-curing of novel tri-functional melamine-phosphate oligomer: An effect of coating with polyurethane acrylate toward mechanical, thermal, and flame retardant properties”

“UV-curing of novel tri-functional melamine-phosphate oligomer: An effect of coating with polyurethane acrylate toward mechanical, thermal, and flame retardant properties”

Modification of ZSM‐5 zeolite nanoparticles by graphene oxide to improve anticorrosion properties of polyurethane coating

Fabrication, Thermo-Mechanical, and Morphological Characterization of Hydroxyapatite-Reinforced Polyurethane Biocomposites as Dye Adsorbent for Effluent

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