• Surface reactivity and layer analysis of chemisorbed reaction films in the surface-chemical environment of alkyl octadecenoates

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      https://www.ias.ac.in/article/fulltext/jcsc/121/03/0353-0360

    • Keywords

       

      Surface reactivity; chemisorbed reaction films; solvent fractionated films; surface chemical reaction.

    • Abstract

       

      Studies on surface reactivity of substrate iron (Fe-particles) were made in the tribo-chemical environment of alkyl octadecenoates. Two alkyl octadecenoates namely ethyl octadecenoate and methyl 12-hydroxy octadecenoate, slightly different in their chemical nature, were taken for preparing the chemisorbed reaction films (CRF) at the temperature $100 \pm 5^\circ$C. The reaction products collected in the composite (amorphous) phase were isolated into three different solvent-soluble fractions (sub-layer films) using polar solvents of increasing polar strength. The FTIR analysis of these films showed that these were primarily organic in nature and were composed of alkyl and/or aryl hydroxy ethers, unsaturated hydroxy ketones, and aromatic structures chemically linked with iron surface. These reaction films also contained large amount of iron (Fe). Further, these film fractions also showed varying thermal behaviour during thermal decomposition in the temperature range of $50-800^\circ$C when thermally evaluated in the nitrogen environment.

    • Author Affiliations

       

      R B Choudhary1 O N Anand2 O S Tyagi3

      1. Center for Advanced Technology (CAT), Haryana Engineering College Jagadhari, Yamunanagar, Haryana 135 003
      2. Specialties and Additives Group, Chemical and Bio-Science Division, Indian Institute of Petroleum, Mohkampur, Dehradun 248 005
      3. Spectroscopy (FTIR) Laboratory, Analytical Science Division (ASD), Indian Institute of Petroleum, Mohkampur, Dehradun 248 005
    • Dates

       
  • Journal of Chemical Sciences | News

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