Mathematical expressions for calculation of oil-polymer blends

• Published in: European journal of lipid science and technology Vol. 107; no. 5; pp. 324 - 329
• Main Authors: Dutt, Nidamarthy V. K., Sreekumar, Gudipati, Ravikumar, Yerrapragada V. L., Chalapathi Rao, Mannava G. V.
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.05.2005; WILEY‐VCH Verlag; Wiley-VCH
• Subjects: Biological and medical sciences; correlations; Fat industries; Food industries; Fundamental and applied biological sciences. Psychology; molar refraction; Oil-polymer blends; orientation polarization; properties; Oils and fats industry; Correlation; Oil-polymer blends; molar refraction; orientation polarization; Oil; Polymer; correlations; properties
• ISSN: 1438-7697; 1438-9312
• DOI: 10.1002/ejlt.200401083

A study of the recent literature emphasized the importance of blending polymers with oils for improving the performance characteristics (like flexibility, corrosion resistance, etc.) of adhesives, coatings and laminates. Investigation of the available data revealed that several properties of such oil‐polymer blends could be correlated by molar refraction (RM), with reasonable accuracies. The properties of the linseed oil‐polystyrene (PS) and linseed oil‐polymethyl methacrylate (PMMA) blends studied are iodine value (IV), hydroxyl value (HV), inherent viscosity (η), melting temperature (TM), and glass transition temperature (Tg). In the case of safflower, palm and peanut oil‐sucrose polyester formulations, the viscosity at 40 °C (η40) and the melting point TM have been correlated by RM with the average absolute deviations (ē) of 17.8% and 3.0%, respectively. Using the orientation polarization PO (to represent polarity) in addition to RM, η40 and TM of oil‐polyester formulations could be calculated with ē values of 8.9% and 1.7%, compared to 17.8% and 3.0% using RM alone. The results indicated the importance of PO in improving the accuracy of predictions for properties.