Chemical transformation of renewable algae oil to polyetheramide polyols for polyurethane coatings

Patil, Chandrashekhar K.; Jirimali, Harishchandra D.; Paradeshi, Jayasinh S.; Chaudhari, Bhushan L.; Alagi, Prakash; Mahulikar, Pramod P.; Hong, Sung Chul; Gite, Vikas V.

doi:10.1016/j.porgcoat.2020.106084

Cited by 15 publications

(18 citation statements)

References 53 publications

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“…The effect is more pronounced for the PU coating based on a polyol synthesized from algae oil and an aliphatic diol produced by the fermentation of sugar or carbohydrates (see formulas in Figure 9a). [ 63 ]…”

Section: Corrosion Protective Propertiesmentioning

confidence: 99%

Recent Trends in Waterborne and Bio‐Based Polyurethane Coatings for Corrosion Protection

Luna

2022

Adv Materials Inter

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polyurethanes. Different approaches have been identified for the realization of green PUs, which include-but are not limited to-renewability of the starting materials, sustainability of the synthesis itself, isocyanate-free formulations, and reduction of VOC emissions by limiting the use of organic solvents. [4] In particular, the present review deals with recent researches on two classes of green PUs, namely waterborne and bio-based formulations, focusing on their application as coatings to protect metal surfaces from corrosion. As such, manuscripts specifically addressing the synthesis and/or standard chemicophysical characterization of newly proposed formulations were not considered here. Readers interested in the synthetic aspects of green PUs can refer to recent comprehensive reviews on the topic. [5][6][7][8][9] In the following the recent relevant literature published since 2015 is critically reviewed, highlighting the main strategies pursued to develop reliable and highly performing anticorrosion coatings based on waterborne and bio-based PUs. Then, the collected data on their protective performances are discussed. Waterborne CoatingsWaterborne polyurethanes (WB-PUs) stepped out in the early 1990s driven by the increasingly strict environmental legislation in North America and Europe. [3] The use of sole water evidently solves the issue related to the huge VOC emission associated with traditional solvent-based coatings. In addition, the presence of water as one of the components removes the possibility of any toxic unreacted isocyanate in the system. [9] The introduction of hydrophilic groups in the formulation is essential to guarantee the stability of WB-PU dispersions. [10] On the other hand, it also detrimentally impacts the waterresistance of the resulting coating, hampering the full exploitation of this class of materials for anticorrosion purposes. Playing with the rich PU chemistry is clearly one possible way to tailor the coating properties, including water resistance and thus anticorrosion ability. [11][12][13] Both the polyol and the diisocyanate used for polyurethane synthesis can indeed be properly selected to maximize the coating protective efficacy. In this perspective, Li et al. found that a balanced polyether/polyester polyol ratio is optimal for anticorrosion applications. [12] Yu et al., instead, focused on the role of the diisocyanate structure, highlighting that the protective ability of WB-PU synthesized with 4,4′-dicyclohexylmethane diisocyanate outperforms Polyurethanes (PUs) have been extensively exploited for the production of protective coatings thanks to the versatility of their chemistry, which allows to adjust the coating properties depending on the final application. In the last decade, the concerns on the negative impact on the environment and human health of traditional petroleum-based and solvent-borne PUs have fostered the research on more environmentally friendly alternatives. This review article provides an overview of the recent approaches that have been profitably pu...

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Section: Corrosion Protective Propertiesmentioning

confidence: 99%

Recent Trends in Waterborne and Bio‐Based Polyurethane Coatings for Corrosion Protection

Luna

2022

Adv Materials Inter

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“…AO is extracted from algae or microalgae and has been a promising candidate for NEVO. The high production possibility of AO is due to the presence of several algae species with high growth rates in many places around the world [ 50 ]. Out of 40,000 identified species of algae, microalgae are one of the fastest growing species and oil content of some species exceeds 80% of the dry weight of algae biomass.…”

Section: Nonedible Vegetable Oils For Polyolsmentioning

confidence: 99%

“…Prior to the preparation of PEsAs, diethanolamides are prepared by the amidation of VOs by reacting them with diethanolamine in the presence of a suitable catalyst [ 96 , 97 ]. Polyetheramide (PEtA) is another class of polyols that first requires the preparation of diethanolamides, which are further reacted with diols to be converted into PEtAs [ 50 ]. Alkyds are the oldest polymeric resins prepared with VOs and contain ester moieties in their polymeric chains [ 16 ].…”

Section: Nonedible Vegetable Oils For Polyolsmentioning

confidence: 99%

“…PU prepared from AO-based PEtA polyols showed good anticorrosive capability due to the nitrogen containing polyols with long aliphatic chain of AO [ 50 ]. Alam et al reported the use of LO for the preparation of PEtA resins using bisphenol-A and resorcinol, affording improved mechanical properties, such as scratch hardness, impact resistance, and bending resistance [ 64 ].…”

Section: Nonedible Vegetable Oil-based Polyurethane Coatingsmentioning

confidence: 99%

“…HAP NPs are another example that can be prepared from biowaste materials, i.e., waste egg shells. Gite et al developed antibacterial PU coatings by employing PEsA, PEtA, Ag-doped eggshell HAP, and thio-diacids [ 26 , 50 , 103 , 104 ]. The prepared PU coatings showed good antibacterial potential against Gram-positive and Gram-negative bacteria due to the presence of a high percentage of oleic acid in AO, which can inhibit bacterial growth [ 175 ].…”

Section: Nonedible Vegetable Oil-based Polyurethane Coatingsmentioning

confidence: 99%

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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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Algal-based Biopolymers

Younes,

Arnold,

Paper

et al. 2023

Value-Added Products From Algae

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Chemical transformation of renewable algae oil to polyetheramide polyols for polyurethane coatings

Cited by 15 publications

References 53 publications

Recent Trends in Waterborne and Bio‐Based Polyurethane Coatings for Corrosion Protection

Recent Trends in Waterborne and Bio‐Based Polyurethane Coatings for Corrosion Protection

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

Algal-based Biopolymers

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