Anti-microbial and anti-corrosive poly (ester amide urethane) siloxane modified ZnO hybrid coatings from Thevetia peruviana seed oil

Siyanbola, T. O.; Sasidhar, K.N.; Anjaneyulu, B.; Kumar, K. Praveen; Rao, B. Appa; Narayan, Ramanuj; Olaofe, O.; Akintayo, E. T.; Raju, K. Mohana

doi:10.1007/s10853-013-7633-x

Cited by 55 publications

(45 citation statements)

References 34 publications

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“…This is as a result of chain entanglement in within coating system (especially, as the percentage composition of the modified nanomaterial increases within the polymer matrix) hence, unreacted free isocyanate groups chemically react with moisture in the environment. 5,12,13 The seven days drying time for PURFA is high when compared with five days observed with Siyanbola et al 5 This may be due to the nature of diisocyanate (4,4'-diisocyanatodicyclohexylmethane) used in 5 . However, this resin stayed a longer time in the water and its films were not affected.…”

Section: 10mentioning

confidence: 88%

“…The reaction mixture was refluxed at 145-150 ˚C until the theoretical amount of water was collected and the reaction was monitored by the determination of acid value at regular intervals (Scheme-2). 5,9 At the end of the reaction the product (RCPEA) was taken out of the four neck round bottom flask and xylene (solvent) was withdrew from the compound using rotary evaporator under reduced pressure.…”

Section: Synthesis Of Ricinus Communis Polyesteramide (Rcpea)mentioning

confidence: 99%

“…5,14,15 The results of the test are presented in Fig.-7. The films under investigation show least inhibitive zones on B. subtilis.…”

Section: Antibacterial Activities Of the Filmsmentioning

confidence: 99%

“…metathesis, hydrolysis, epoxidation, halogenation, hydroformylation, and aminolysis) POLYURETHANE on the seed oil can also be carried out in other to increase the presence of reactive sites for the development of polymeric organic coatings like alkyds, polyetheramides, epoxies, polyurethanes, polyesteramide and other resins. [5][6] In this study, a non-drying shrub-like plant seed oil (Ricinus communis) having 40% to 60% seed oil content was modified through aminolysis in order to increase its hydroxy functionality; this prepared polyol was used for the synthesis of pristine and hybrid polyurethane composites. The need to formulate coatings with hybrid materials cannot be overemphasized.…”

Section: Introductionmentioning

confidence: 99%

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Studies on the Antibacterial and Anticorrosive Properties of Synthesized Hybrid Polyurethane Composites From Castor Seed Oil

2017

RJC

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Castor seed oil (Ricinus communis) is a prominent feed stock towards the generation of renewable materials for industrial production. The reach presence of ricinoleic fatty acid at 87.5% provides pendant hydroxyl functional groups, which is an essential site for chemical formulations. This paper presents the synthesis, characterization, and evaluations on antibacterial and anticorrosive activities of synthesized hybrid composites from Ricinus communis seed oil. N,N'-bis(2-hydroxy ethyl)-12-hydroxy Ricinus communis oil fatty amide (HERCA) was synthesized via aminolysis polyol formation route. Upon reacting HERCA with succinic acid at a high temperature of about 145 ºC, a polyesteramide (RCPEA) was formed. This ester product undergoes urethanation and subsequently interfaced with modified hybrid material. The synthesized composites were characterized using spectroscopic methods such as FT-IR, 1 H-NMR, and 13 C-NMR. Selected physicochemical parameters were also carried out on the products. Coating performance on cured resins was examined.

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Section: 10mentioning

confidence: 88%

Section: Synthesis Of Ricinus Communis Polyesteramide (Rcpea)mentioning

confidence: 99%

“…5,14,15 The results of the test are presented in Fig.-7. The films under investigation show least inhibitive zones on B. subtilis.…”

Section: Antibacterial Activities Of the Filmsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Studies on the Antibacterial and Anticorrosive Properties of Synthesized Hybrid Polyurethane Composites From Castor Seed Oil

2017

RJC

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“…The degradation of the world polity and regional wars are not left out, because their underlying reasons and interest are centered on this limited and non-ecofriendly based material (petroleum) [1][2][3] . Sustainable resource materials like cellulose and starch, proteins, natural rubber and vegetable seed oils are capable of providing eco-friendly chemicals and polymeric based feeds as substitute to petroleum feed stocks 4 .…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic Examinations, Antimicrobial and Anti-corrosive Evaluations of Polyurethanes Synthesized from Thevetia Peruviana Seed Oil

Siyanbola

Akinsola²,

Adekoya³

et al. 2016

Orient. J. Chem

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Seed oil based polyurethane resins were synthesized from underutilized plant seedlings of Thevetia peruviana (yellow oleanda). The seed oil was converted to partial glycerides (PG) polyol using calcium oxide as catalyst. The polyol was treated with varying ratios of isophorone diisocyanate (IPDI) in order to synthesize partial glyceride urethanes (PGU) films. The PG intermediate and PGU products were characterized using FT-IR, 1 H-NMR and 13 C-NMR. Physico-chemical parameters like acid value, hydroxyl value, viscosity and refractive index were also examined. Corrosion stability of coated panels was studied in the salt spray chamber. Thermal stability and antimicrobial study of the films were also evaluated.

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Synthesis and Characterization of Green Polyurethane Coatings Derived from Niger‐Seed‐Oil‐Based Polyesteramide Polyols

Doke

Paraskar

Rajput

et al. 2021

Euro J Lipid Sci & Tech

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Polymeric researchers are trying to use renewable resources for polymeric resins in the coating industry to reduce fossil or petroleum feedstock reliance significantly. The present research attempts to develop a polyurethane (PU) coating for the first time from Niger seed oil (NSO). The polyesteramide polyols are synthesized by amidation of Niger seed oil with diethanolamine and further esterification with different biobased dicarboxylic acids (phthalic, itaconic, and dimer) to introduce a required functionality of hydroxyl group. Spectroscopic studies of Niger‐seed‐oil‐based fatty diethanolamide and polyesteramide polyols are carried out by Fourier‐transform infrared spectroscopy and proton nuclear magnetic resonance. The polyurethane coatings are prepared from synthesized polyesteramide polyols and hexamethylene diisocyanate biuret (HDI‐B). The cross‐link density of PU coatings demonstrated by gel content method and the corrosion study is carried by salt water immersion technique. The PU coatings are also studied for glass transition temperature (Tg) and thermal stability by differential scanning calorimetry and thermogravimetric analysis. Practical Applications: The long aliphatic chain provides flexibility, whereas the rigid structure of polyols enhances the hardness of PU coating. The phthalic‐based PU metal coatings depict excellent hardness, gloss, hydrophobicity, and chemical resistance compared to itaconic and dimer‐acid‐based PU.

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Anti-microbial and anti-corrosive poly (ester amide urethane) siloxane modified ZnO hybrid coatings from Thevetia peruviana seed oil

Cited by 55 publications

References 34 publications

Studies on the Antibacterial and Anticorrosive Properties of Synthesized Hybrid Polyurethane Composites From Castor Seed Oil

Studies on the Antibacterial and Anticorrosive Properties of Synthesized Hybrid Polyurethane Composites From Castor Seed Oil

Spectroscopic Examinations, Antimicrobial and Anti-corrosive Evaluations of Polyurethanes Synthesized from Thevetia Peruviana Seed Oil

Synthesis and Characterization of Green Polyurethane Coatings Derived from Niger‐Seed‐Oil‐Based Polyesteramide Polyols

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