Development of amine–acid cured Annona squamosa oil epoxy anticorrosive polymeric coatings

Ahmad, Sharif; Naqvi, Fehmida; Sharmin, Eram; Verma, Kanak Lata

doi:10.1016/j.porgcoat.2005.11.013

Cited by 36 publications

(16 citation statements)

References 12 publications

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“…Differences in the fatty acid composition of the seed oil may exist even within the same variety. For example, Ansari et al [8] and Ahmad et al [27] reported that the dominant fatty acids in the seed oil of A. squamosa Linn. were oleic (37.0%), palmitic (25.1%) and linoleic (10.9%).…”

Section: Fatty Acid Compositionmentioning

confidence: 99%

Annona squamosa and Catunaregam nilotica Seeds, the Effect of the Extraction Method on the Oil Composition

Mariod

Elkheir

Ahmed

et al. 2010

J Americ Oil Chem Soc

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Annona squamosa and Catunaregam nilotica seeds and oils were characterized for their approximate analysis and physico-chemical properties. The oil and protein contents were 26.8, 17.5 and 40.0, 22.2%, in A. squamosa and C. nilotica seeds, respectively. The oils were extracted using cold extraction (CE) and Soxhlet extraction (SE) methods. Fatty acids and tocopherols were determined by GC-MS and HPLC, respectively. Generally the physico-chemical properties and fatty acids were not significantly (P B 0.05) affected by the extraction methods. The major fatty acids of A. squamosa oil extracted by CE and SE were oleic 49.2 and 50.5%, linoleic 22.3 and 22.7%, palmitic 15.6 and 15.2%, and stearic 10.6 and 9.3%, respectively. While the major fatty acids in C. nilotica oil extracted by CE and SE were oleic 10.5, and 10.4%, linoleic 63.1 and 63.4%, palmitic 9.7 and 9.8% and stearic 5.1 and 5.4%, respectively. The tocopherol content of CE and SE extracted oils from A. squamosa amounted to 16.6 and 15.5 and from C. nilotica amounted to 110.5 and 107.7 mg/100 g oil, respectively, with delta-tocopherol as the predominant tocopherol in A. squamosa oil, and beta-tocopherol in C. nilotica oil. The total amount of amino acids was found to be 7.266 and 14.202 g/100 g protein, in seeds of A. squamosa and C. nilotica, respectively.

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Section: Fatty Acid Compositionmentioning

confidence: 99%

Annona squamosa and Catunaregam nilotica Seeds, the Effect of the Extraction Method on the Oil Composition

Mariod

Elkheir

Ahmed

et al. 2010

J Americ Oil Chem Soc

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“…As such, epoxy resin is widely used for applications such as coating, adhesive and matrices for composite materials. Recently, soybean oil, castor oil, and annosa squamosa oil have been used successfully as blending components in epoxy resin [10][11][12]. Besides reducing dependence on petrochemical sources, the use of epoxidized soybean oil as a blending component in the epoxy resin has also been reported to improve the impact strength, thermal and environmental properties as compared to the liquid rubber [13].…”

Section: Introductionmentioning

confidence: 99%

Blending of Epoxidised Palm Oil with Epoxy Resin: The Effect on Morphology, Thermal and Mechanical Properties

2012

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Epoxy resin prepared by the reaction of a diglycidyl ether of bisphenol A (DGEBA) and m-xylylenediamine (m-XDA) was modified with 10% wt of epoxidized palm oil (EPO). The EPO was first pre-polymerized with m-XDA at various temperatures and reaction times. The resulting product was then mixed with the epoxy resin at 40°C and allowed to react at 120°C for another 3 h. The fully reacted DGEBA/m-XDA/EPO blend was characterized by using scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermal gravimetric analysis, tensile test, hardness indentation and dynamic mechanical analysis. The SEM study shows that different types of morphology, ranging from phase separated to miscible blends were obtained. A miscible blend was obtained when the m-XDA and EPO were reacted for more than 2 h. The results from DSC analysis show that the incorporation of EPO at 10% wt in the epoxy blend reduced the glass transition temperature (T g ). The lowered T g and mechanical properties of the modified epoxy resins are caused by a reduction in crosslinking density and plasticizer effect.

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“…It can be accomplished by different approaches such as by using peracetic acid, dioxirane and hydrogen peroxide. Oils such as linseed, soybean, safflower, sunflower, canola, crambe, meadowfoam, lesquerella, rapeseed, rubberseed, castor, tung, coriander, olive and Annona squamosa have been epoxidized by aforementioned agents [1][2][3][4][5][6]. Aliphatic epoxies derived from vegetable seed oils are characterized by good adhesion, flexibility and corrosion resistance properties [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…Oils such as linseed, soybean, safflower, sunflower, canola, crambe, meadowfoam, lesquerella, rapeseed, rubberseed, castor, tung, coriander, olive and Annona squamosa have been epoxidized by aforementioned agents [1][2][3][4][5][6]. Aliphatic epoxies derived from vegetable seed oils are characterized by good adhesion, flexibility and corrosion resistance properties [5][6][7]. Oil epoxies have been used as HCl scavengers, stabilizers, plasticizers, reactive diluents, toughening agents for commercially available epoxy resins, for ink formulations and paints or coatings [5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Aliphatic epoxies derived from vegetable seed oils are characterized by good adhesion, flexibility and corrosion resistance properties [5][6][7]. Oil epoxies have been used as HCl scavengers, stabilizers, plasticizers, reactive diluents, toughening agents for commercially available epoxy resins, for ink formulations and paints or coatings [5][6][7][8][9][10][11]. A major factor that prevents extensive application of oil epoxies is their poor load bearing capacity, hardness and sluggish cure rate attributed to their internally embedded epoxide groups [8].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis, characterization, antibacterial and corrosion protective properties of epoxies, epoxy-polyols and epoxy-polyurethane coatings from linseed and Pongamia glabra seed oils

Sharmin

Ashraf

Ahmad

2007

International Journal of Biological Macromolecules

Self Cite

110

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Development of amine–acid cured Annona squamosa oil epoxy anticorrosive polymeric coatings

Cited by 36 publications

References 12 publications

Annona squamosa and Catunaregam nilotica Seeds, the Effect of the Extraction Method on the Oil Composition

Annona squamosa and Catunaregam nilotica Seeds, the Effect of the Extraction Method on the Oil Composition

Blending of Epoxidised Palm Oil with Epoxy Resin: The Effect on Morphology, Thermal and Mechanical Properties

Synthesis, characterization, antibacterial and corrosion protective properties of epoxies, epoxy-polyols and epoxy-polyurethane coatings from linseed and Pongamia glabra seed oils

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