Open Access

ARTICLE

Dielectric Permittivity of Rigid Rapeseed Oil Polyol Polyurethane Biofoams and Petrochemical Foams at Low Frequencies

Ilze Beverte^1,*, Vairis Shtrauss¹, Aldis Kalpinsh¹, Uldis Lomanovskis¹, Ugis Cabulis², Irina Sevastyanova², Sergejs Gaidukovs³

1 Institute for Mechanics of Materials, University of Latvia, Riga, LV-1006, Latvia
2 Latvian State Institute of Wood Chemistry, Riga, LV-1006, Latvia
3 Faculty of Materials Science and Applied Chemistry, Institute of Polymer Materials, Institute of Applied Chemistry, Riga Technical University, Riga, LV-048, Latvia

* Corresponding Author: Ilze Beverte. Email: