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Development of Anticorrosive Poly(Ether-Urethane) Amide Coatings from Linseed Oil: A Sustainable Resource

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Abstract

Polyetheramide(PEtA) resin was synthesized by the condensation polymerization of N,N-bis(2-hydroxy ethyl) linseed oil fatty amide diol (HELA) with resorcinol. It was further treated with different percentage of toluylene 2-4-diisocyanate (TDI) to obtain the urethane modified polyetheramide resins (UPEtA). The structural elucidation of PEtA and urethane modified polyetheramide(UPEtA) were carried out by FT-IR, 1H-NMR and 13C-NMR spectroscopic techniques. These analyses confirm the formation of PEtA and UPEtA. Physico-chemical and physico-mechanical analysis were performed by standard laboratory methods. The resin composition UPEtA-24 showed best physico-mechanical properties with scratch hardness 2.0 kg, impact resistance 150 lb/in. and good bending ability. The thermal stability and curing behavior of polymers were respectively studied by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Thermal analysis shows that these coatings can be used safely upto 190 °C. The coatings of UPEtA resins were prepared on mild steel strips. The anticorrosive behavior of UPEtA coatings were investigated in acid, alkali, water and xylene. All the coatings exhibit good chemical resistance performance in acid, alkali, saline and organic solvents, while the resin UPEtA-24 shows the best performance.

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Acknowledgment

Manawwer Alam gratefully acknowledges financial support by the Council of Scientific and Industrial Research(CSIR), New Delhi, India for Research Associateship against Grant No. 9/86/0859/08 EMR-I.

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Authors and Affiliations

  1. Centre for Biomedical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India

    Manawwer Alam & Alok R. Ray

  2. Biomedical Engineering Unit, All India Institute of Medical Science, New Delhi, 110029, India

    Alok R. Ray

  3. Materials Research Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi, 110025, India

    S. M. Ashraf & Sharif Ahmad

Authors
  1. Manawwer Alam
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  2. S. M. Ashraf
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  3. Alok R. Ray
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  4. Sharif Ahmad
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Correspondence to Manawwer Alam.

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Alam, M., Ashraf, S.M., Ray, A.R. et al. Development of Anticorrosive Poly(Ether-Urethane) Amide Coatings from Linseed Oil: A Sustainable Resource. J Polym Environ 18, 208–215 (2010). https://doi.org/10.1007/s10924-010-0177-0

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  • DOI: https://doi.org/10.1007/s10924-010-0177-0

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