Lubricants that are based on renewable raw materials have drawn increased attention in various applications, especially those related to the food industry. Due to the high requirements of environmental protection, there is a need to develop biodegradable base oils that are environmentally friendly and do not contain harmful components. The objective of the research was to obtain a base oil with a certain viscosity and certain desired lubricating properties. Base oils were obtained from Crambe abyssinica oil by means of blending with synthetic oil and oxidation. The oxidation processes were carried out in the presence of N-hydroxyphthalimide with or without CO₂ as a solvent. As a final result of this study, oil bases meeting the viscosity requirements and showing suitable lubricating properties were obtained. The Raman spectra of the obtained oils were evaluated.

Raw vegetable oil from Crambe abyssinica was subjected to oxidative treatment to enhance its viscosity. The oxidation processes were carried out in the presence of N-hydroxyphthalimide with or without supercritical CO₂ as a solvent. Four spectroscopic techniques (Raman, UV-VIS, FT-IR, NMR) were applied to assess the chemical changes taking place during the oxidation. Raman and NMR spectroscopy proved best in the assessment of the chemical transformations leading to increased viscosity of the modified vegetable oil.

Lubricants that are based on vegetable oils and other renewable resources are the subject of many research studies and can be used in various applications, especially in the food industry, which is characterized by the high quality requirements related to the necessity to develop biodegradable lubricants that are environmentally friendly and do not contain harmful components and are safe to use for people. The objective of the described research was to obtain a base oil with a certain viscosity, which is higher than the viscosity of the initial vegetable oil, and certain lubricating properties. The initial oil derived from Crambe abyssinica was subjected to oxidation in the presence of N-hydroxyphthalimide with or without supercritical CO ₂ as a solvent. As a final result of this study, base oils meeting the viscosity requirements and having high biodegradability were obtained. The Raman spectra of the modified vegetable oils were evaluated and they were used for the initial assessment of the composition and the evaluation of the presence of harmful chemical compounds.

Identification of Some New Generation Additives for Polymers Obtained in the Catalytic Hydrogenation Process | InTechOpen, Published on: 2017-01-25. Authors: Euzebiusz Jan Dziwiński, Bartłomiej Bereska, Jolanta Iłowska, et