Controlled Hydroxyl Functionality of Soybean Oil-Based Polyols for Polyurethane Coatings with Improved Anticorrosion Properties

Alagi, Prakash; Ghorpade, Ravindra V.; Jang, Jeong Hyeon; Patil, Chandrashekhar K.; Jirimali, Harishchandra D.; Gite, Vikas V.; Hong, Sung Chul

doi:10.1007/s13233-018-6104-2

Cited by 18 publications

(3 citation statements)

References 52 publications

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“…The average hydroxyl functionalities per PEC polyol molecule calculated from the hydroxyl values and M n,Maldi values were 2.75, 2.50, 2.41, 2.29, and 2.10 for PEC polyol-0, -9, -16, -20, and -24, respectively. A sufficiently high OH functionality (>2) ensured the usefulness of the polyols for the preparation PU, − although the hydroxyl functionality values slightly decreased under increased CO 2 pressure.…”

Section: Resultsmentioning

confidence: 99%

Facile Room-Temperature Preparation of Flexible Polyurethane Foams from Carbon Dioxide Based Poly(ether carbonate) Polyols with a Reduced Generation of Acetaldehyde

Jang

Kim

et al. 2019

ACS Omega

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Carbon dioxide (CO 2 ) is becoming more attractive as a renewable feedstock for chemical synthesis. In this study, CO 2 was incorporated into poly(ether carbonate) (PEC) polyols by using a double-metal-cyanide catalyst. By adjusting the CO 2 pressure, the content of propylene carbonate units in the PEC polyols was controlled, indicating successful and semiquantitative incorporation of CO 2 into the PEC polyols. Polyurethane foams (PUFs) with different propylene carbonate content were easily prepared at room temperature by employing the PEC polyols due to their adequate viscosity under ambient conditions. The firmness of the PUFs increased as the amount of propylene carbonate units increased due to the rigidity of the carbonate linkage, representing predictable mechanical properties. Interestingly, reduced generation of volatile organic compounds (VOCs) from the PUFs, namely acetaldehyde, was observed with a high content of propylene carbonate units at 120 °C, indicating good stability of the carbonate units against thermo-oxidative decomposition. This study demonstrates the importance of CO 2 as an environmental-friendly and renewable resource that can provide not only industrially important but also problem-solving products in terms of processability and low generation of VOCs.

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Section: Resultsmentioning

confidence: 99%

Facile Room-Temperature Preparation of Flexible Polyurethane Foams from Carbon Dioxide Based Poly(ether carbonate) Polyols with a Reduced Generation of Acetaldehyde

Jang

Kim

et al. 2019

ACS Omega

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“…Therefore, the coating's ability to protect the substrate from corrosion is also a function of how accessible it is for ions to reach the interface between the coating and substrate. [40][41][42].…”

Section: Amentioning

confidence: 99%

Evaluation of adhesion and corrosion wear resistance of biobased polymers derived from linseed oil deposited on Fe-Zn sheets

González

Martínez-Barrera

Martínez

et al. 2022

inycomp

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The objective of this paper is to study adherence and corrosion wear resistance of biobased polymers derived from epoxidized linseed oil (ELO) deposited on galvanized iron sheets. The adhesion and anticorrosive properties of the pure epoxy resin (ELO) were compared with those that contained bisphenol A (BFA) and carbon black (CB), which were polymerized by oxirane ring opening catalyzed by aluminum triflate (ATf). Fourier Transform Infrared Spectroscopy (FTIR) confirmed the formation of the different biobased polymers as coatings. To evaluate the performance to the corrosion resistance each coating was tested to adhesion and accelerated weathering within a salt spray chamber. The use of BFA provided greater adhesion than pure ELO coatings. Additionally, the addition of small loads of CB improved the appearance, adhesion, and durability of the coating, thus decreasing the corrosion of the galvanized sheets. Finally, the interactions that occur at the interface between the different polymeric matrices and the substrate surface, which allow improving the corrosion resistance were analyzed.

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“…VO-based polyols can also be prepared by a single-step thiol-ene reaction in VOs with thiol compounds under ultraviolet light for the conversion of double bonds into polyols [ 45 , 99 , 100 , 101 , 102 ]. Acrylation, vinylation, metallation, and other chemical pathways can also be employed for the preparation of polyols to produce better dried, glossy, scratch-resistant, impact-resistant, flexible, and corrosion-resistant coatings.…”

Section: Nonedible Vegetable Oils For Polyolsmentioning

confidence: 99%

Nonedible Vegetable Oil-Based Polyols in Anticorrosive and Antimicrobial Polyurethane Coatings

et al. 2021

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This review describes the preparation of nonedible vegetable oil (NEVO)-based polyols and their application in anticorrosive and antimicrobial polyurethane (PU) coatings. PUs are a class of versatile polymers made up of polyols and isocyanates. Renewable vegetable oils are promising resources for the development of ecofriendly polyols and the corresponding PUs. Researchers are interested in NEVOs because they provide an alternative to critical global food issues. The cultivation of plant resources for NEVOs can also be popularized globally by utilizing marginal land or wastelands. Polyols can be prepared from NEVOs following different conversion routes, including esterification, etherification, amidation, ozonolysis, hydrogenation, hydroformylation, thio-ene, acrylation, and epoxidation. These polyols can be incorporated into the PU network for coating applications. Metal surface corrosion and microbial growth are severe problems that cause enormous economic losses annually. These problems can be overcome by NEVO-based PU coatings, incorporating functional ingredients such as corrosion inhibitors and antimicrobial agents. The preferred coatings have great potential in high performance, smart, and functional applications, including in biomedical fields, to cope with emerging threats such as COVID-19.

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Controlled Hydroxyl Functionality of Soybean Oil-Based Polyols for Polyurethane Coatings with Improved Anticorrosion Properties

Cited by 18 publications

References 52 publications

Facile Room-Temperature Preparation of Flexible Polyurethane Foams from Carbon Dioxide Based Poly(ether carbonate) Polyols with a Reduced Generation of Acetaldehyde

Facile Room-Temperature Preparation of Flexible Polyurethane Foams from Carbon Dioxide Based Poly(ether carbonate) Polyols with a Reduced Generation of Acetaldehyde

Evaluation of adhesion and corrosion wear resistance of biobased polymers derived from linseed oil deposited on Fe-Zn sheets

Nonedible Vegetable Oil-Based Polyols in Anticorrosive and Antimicrobial Polyurethane Coatings

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